Smart Generator Hack v4.1 crack serial keygen

Smart Generator Hack v4.1 crack serial keygen

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Tally ERP 9 Crack Release 6.6 With Serial Key Free Download

Tally ERP 9 Crack Release V6.6 With Serial Key Free Download Latest {2021}

Tally ERP 9 Crack Release 6.5.5 With Serial Key Free Download

Tally ERP 9 Crack is a top-rated and intelligent program. Users chose It for enterprise management for more than a million people in 140+ countries. It gives us the best business operations. In commercial features such as economics, cost development, sales outlet stores, and branch management, also opportunities. As well it provides all the functions for owning a high-performance business.

Use Tally ERP 9 Crack in various ways are: people pay the lender and other costs from home and anywhere. And If one does your business competence personally. It is unit installation straightforward and effortless. Also, Tally ERP 9 Key is a complete tool that attracts it’s unique easily. You complete business capacities such as Sales, Inventory, Details of Sales Accounting, Allows the business lovers, and proprietor to do more.

Tally ERP 9 Crack Release 6.5.5 With Serial Key Free Download

Tally ERP 9 Keygen Working 2021:

Tally ERP 9 Keygen is a multi-tasking software that allows you to maintain structure for the building. You can download and install this software with a proper setup. We’ve shared the Latest version release 6.5. Its benefits for small and large firms. You can manage all functions such as finance estimation, or inventory.

Tally ERP 9 crack patch is a high-performance program worldwide. You can put wherefore and others. The primary objective of this software is that you can manage all portions in one place. It has many functions, and each has different functionality. You can quickly learn how to use this software.

Tally ERP 9 Keygen V6.6 is the best software application also available at the play store. At this user can handle all necessary tools to build an accelerated program. You can even install it on your mobile phone. It allows functionality for personal use. Also, it’s speedy and reliable installation enables you to manage team members. You can even check the tutorial and other subjective things. Also, you can create a fantastic report with Microsoft word 2016.

Tally ERP 9 With Crack:

Tally ERP 9 With Crack has performed a different transaction. Users can use cloud storage for large files. It let the user print a document in a 3D format. So, Tally ERP 9 Activation key is free for you. It helps manage a business and bank account. Tally ERP 9 License Key is a specially design Bahrain clients only. It has no change for Indian users.

Why use tally ERP 9 full version?

It is one place where users can manage inventory and other things. You can create balance sheets and much more. Also, you can import and export all data in XML format. Clients can also access to see the business transaction. It enables the user to comment on more people at the same time with the same framework. It’s run on android apps, tablet, and notebook.


  • Easy debugging and diagnosis of taxes refunds without the issue
  • It is an enterprise management solution
  • You don’t desire a working code since it works without frigid no code.
  • A useful number of things you can do the job
  • Excellent understanding of a better business experience
  • You can control credit management.
  • Therefore you maintain multiple companies.
  • It includes essential and uncomplicated accounting functions in dealing with directions.
  • Support for every GST trades for your business
  • Large enterprises give a whole lot of content.
  • It supplies the finance move & cash flow.
  • By calculator, you can evaluate the interest.
  • It means the compatibility with the latest medical changes grows daily.
  • You will avail of new product improvements & significantly produce at regular intervals.
  • So by using this, you’ll create consolidated details as well.
  • You get the entire info into multiple business locations.
  • Furthermore, now have the circular of that period access to essential information related to your business performance whenever everywhere.

What’s new in Tally ERP 9?

  • Synchronize your business data across different locations without the need for rigid schedules.
  • It has interconnection driven functionalities.
  • Plan your cash most and manage your working capital requirements efficiently.
  • Upgrade all the systems in a multi-user environment.
  • Enjoy custom corrections and a storage space optimized system performance.
  • Also, automatically reconcile your books of accounts with your lender assertions easily.

Tally ERP 9 Crack Accounting Management:

  • Loan provider accounting
  • Check command
  • More currency
  • Calculation appealing
  • Cost centers and service centers
  • Balance sheet and P&L
  • Money and cash flow
  • Bank or investment company reconciliation
  • Electronic digital payments

tally ERP 9 activation key


Tally ERP 9 serial key:


Tally ERP 9 serial key:


System Requirements:

  • Operating System: Win 7 or higher
  • RAM: Minimum 1 GB
  • Storage: 10 GB

How to Install & Crack?

  • Download official setup.exe and set it up.
  • After the installation, close the installer and open installation listing.
  • Now copy the Crack folder copy and paste crack’s files in the installation directory.
  • Run Tally ERP 9 crack, you’re done. Enjoy.

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Источник: []

This is a listing of all casks available from the cask tap via the Homebrew package manager for macOS.

0-ad0 A.D.0.0.25b-alpha010-editor010 Editor12.0.1115browser115Browser24.5.0.11clipboard1Clipboard0.1.81password1Password7.9.11password-cli1Password CLI1.12.3360safe360 Total Security1.2.63dgenceslicer3DGence Slicer3.0.0,4.04k-slideshow-maker4K Slideshow Maker2.0.14k-stogram4K Stogram3.4.34k-video-downloader4K Video Downloader4.18.54k-video-to-mp34K Video to MP33.0.14k-youtube-to-mp34K YouTube to MP34.3.54peaks4Peaks1.85kplayer5KPlayer6.9.0,5000777777771.1.38bitdo-ultimate-software8BitDo Ultimate Software2.0.48x8-meet8x8 Meet0.3.8.18x8-work8x8_work7.13.2-2a-better-finder-attributesA Better Finder Attributes7.17a-better-finder-renameA Better Finder Rename11.39a-slower-speed-of-lightA Slower Speed of Light2020ableton-live-introAbleton Live Intro11.0.12ableton-live-liteAbleton Live Lite11.0.12ableton-live-standardAbleton Live Standard11.0.12ableton-live-suiteAbleton Live Suite11.0.12abricotineabricotine0.7.0abscissaAbscissa4.0.5abstractAbstract98.0.5abyssoft-teleportteleport1.3.3accessmenubarappsAccessMenuBarApps2.6.1,15accordanceAccordance Bible Software13.3.2accuricsAccurics CLI1.0.27ace-linkAce Link1.9.0acornAcorn7.1.1,15968acousticbrainz-guiAcousticBrainz0.1acquia-devAcquia Dev Desktop2.2021.01.14acronis-true-imageAcronis True Image2021acslogoACSLogo1.6.0.2activedockActiveDock2.99,2199activitywatchActivityWatch0.11.0actualActual0.0.144actual-odbc-packActual ODBC Driver PacklatestadapterAdapter2.1.6adguardAdguard2.6.1.1051adguard-vpnAdguard VPN1.1.0.167adiumAdium1.5.10.4adobe-acrobat-proAdobe Acrobat Pro DC21.007.20099adobe-acrobat-readerAdobe Acrobat Reader DC21.007.20099adobe-airAdobe AIR33.1.1.674adobe-connectAdobe Connect11,2021.9.28adobe-creative-cloudAdobe Creative Cloud5.6.0.788adobe-creative-cloud-cleaner-toolAdobe Creative Cloud Cleaner Tool4.3.0.190adobe-digital-editionsAdobe Digital Editions4.5.11adobe-dng-converterAdobe DNG Converter14.0adoptopenjdkAdoptOpenJDK Java Development Kit16.0.1,9adriveAliyundrivelatestadvancedrestclientAdvanced REST Client16.0.1aegisubAegisub3.2.2aerialAerial Screensaver2.3.3aetherAether2.0.0-dev.15,201126224...aexol-remote-mouseAexol Remote Mouse1.3,5affinity-designerAffinity Designer1.10.4affinity-photoAffinity Photo1.10.4affinity-publisherAffinity Publisher1.10.4after-dark-classicAfter Dark Classic Set1.0agendaAgenda13.1.1,195aimersoft-video-converter-ultimateAimersoft Video Converter Ultimate11.6.6.1aio-creator-neoAIO CREATOR NEO2.10.2air-connectAir Connect2.0.1,26526air-video-server-hdAir Video Server HD2.3.0-beta1u1,202.0902airbuddyAirBuddy2.4.5,344aircallAircall2.18.2airdisplayAir Display3.4.2,26581airdroidAirDroid3.7.0.0airflowAirflow3.3.1airfoilAirfoil5.10.5airmediaCrestron AirMedia4.1.2airparrotAirParrot3.1.2airpassAirpass1.0.1airqmonAirqmon2.1.0airserverAirServer7.2.7airtableAirtable1.4.5airtameAirtame4.3.0airtoolAirtool2.3.2,10airtrashairtrash1.0.0airunlockAirUnlock0.4airyAiry3.24,336aja-system-testAJA System Test2.1.0ajourAjour1.3.2alacrittyAlacritty0.9.0aladinAladin Desktop11.024alchemyAlchemy008aldenteAlDente1.09aleo-studioAleo Studio0.14.0aleph-oneAleph One20210408alfaviewAlfaview8.31.0alfredAlfred4.6,1266algodooAlgodoo2.1.3alinof-timerAlinof Timer4.0.0alipay-development-assistantAlipay Development Assistant1.0.7aliworkbenchAliWorkBench9.04.02,LqEYADnbwALXMQ...all-in-one-messengerAll-in-One Messenger2.5.0alloyAlloy6.0.0almightyalmighty2.2.1,32alt-cAlt-C1.0.7alt-tabalt-tab6.28.0altair-graphql-clientAltair GraphQL Client4.1.0altdeployAltDeploy1.1alternoteAlternote1.0.18,1018altserverAltServer1.4.7,59alvaAlva0.9.1amadeus-proAmadeus Pro2.8.8amadineAmadine1.2.5,149amazon-chimeAmazon Chime4.39.8605amazon-musicAmazon Music8.8.1.2303, Drivelatestamazon-workdocsAmazon WorkDocs1.2.200340.0,99amazon-workdocs-driveAmazon WorkDocs Drivelatestamazon-workspacesAmazon Workspaces4.0.4.2126amd-power-gadgetAMD Power Gadget0.7amethystAmethyst0.15.5amitv87-pipPiP1.40ammAMM0.4.5ammoniteAmmonite1.22.2,532amorphousdiskmarkAmorphousDiskMark1.2.3,9amppsAMPPS3.9anacondaContinuum Analytics Anaconda2021.11ananas-analytics-desktop-editionAnanas Analytics Desktop Edition0.9.0android-commandlinetoolsAndroid SDK Command-line Tools7583922android-file-transferAndroid File Transfer5071136android-messagesAndroid Messages Desktop3.1.0android-ndkAndroid NDK22bandroid-platform-toolsAndroid SDK Platform-Tools31.0.3, Studio2020.3.1.25androidtoolAndroidTool1.66angbandAngband4.2.3angry-ip-scannerAngry IP Scanner3.7.6anka-build-cloud-controller-and-registryAnka Build Cloud Controller & Registry1.20.0,035872f5anka-build-cloud-registryAnka Build Cloud Registry1.20.0,c83f487danka-virtualizationAnka Virtualization2.5.3.135ankamaAnkama Launcher3.5.5.13025ankiAnki2.1.49ankiapp-ankiAnkiApp3.2.2anonymAnonym2.3anonymousvpnAnonymous VPN2.0.1.14another-redis-desktop-managerAnother Redis Desktop Manager1.4.9ansible-dkAnsible DK1.2.0,3antconcAntConc3.5.9anybarAnyBar0.2.3anydeskAnyDesk6.3.3anydoAny.do4.2.158anylistAnyList1.1,2aoAo6.9.0apache-couchdbApache CouchDB3.2.0apache-directory-studioApache Directory Studio2.0.0.v20210717-M17apk-icon-editorAPK Icon Editor2.2.0app-cleanerNektony App Cleaner & Uninstaller7.4.4,840app-tamerAppTamer2.6.4,10674apparencyApparency1.3,130appcleanerFreeMacSoft AppCleaner3.6.0,4070appcodeAppCode2021.2.4,212.5457.65appdeleteAppDelete4.3.3appgate-sdp-clientAppGate SDP Client for macOS5.5.0appgridAppGrid1.0.4appiumAppium Server Desktop GUI1.22.0apple-eventsApple Events1.6apple-juiceApple Juice2020.12.0applepi-bakerApplePi-Baker2.2.3apppoliceAppPolice1.1appstore-quickviewApp...Store Quickview1.1.1apptivateApptivate2.2.1,15apptrapAppTrap1.2.3appzapperAppZapper2.0.3aptanastudioAptana Studio3.7.2.201807301111aptibleAptible Toolbelt0.19.1,20210802230457,251aqua-data-studioAquafold Aqua Data Studio22.0.1aquamacsAquamacs3.5aquaskkAquaSKK4.7.3aquatermAquaTerm1.1.1araxis-mergeAraxis Merge2021.5644archipelagoArchipelago3.16.1archiverArchiver4.0.0arduinoArduino1.8.16aria-maestosaAria Maestosa1.4.13aria2dAria2D1.3.6,509aria2guiAria2GUI1.4.1ariangAriaNg Native1.2.3ark-desktop-walletArk Desktop Wallet2.9.5arkiwiArKiwi4.1.5,4015armoryArmory0.96.5aroundAround0.56.12arqArq7.10arq-cloud-backupArq Cloud Backup1.5arrsyncarRsync0.4.1art-directors-toolkitArt Directors Toolkit5.5.1artisanArtisan2.4.6artpipArtpip2.7.1asanaAsana1.4.2asc-timetablesaSc TimeTables2020.7.1ascensionAscension3.0.0asciidocfxAsciidocFX1.7.4asset-catalog-tinkererAsset Catalog Tinkerer2.5.1assinador-serproassinador-serpro2.7.1astah-professionalChange Vision Astah Professional8.4.1,827bdfastah-umlChange Vision Astah UML8.4.1,827bdfastro-command-centerASTRO Command CenterlatestastropadAstropad3.7.0,3219astropad-studioAstropad Studio3.7.0,3219atemoscatemOSC4.2.0atextaText2.40,117atlantisAtlantis0.9.9.7atlauncherATLauncher3.4.9.1atokATOK2021,32.1.0:try3atomGithub Atom1.58.0atomic-walletAtomic Wallet2.34.0au-labAU Lab2.3audacityAudacity3.1.2audio-hijackAudio Hijack3.8.8audiobook-builderAudiobook Builder2.1.4audiogridder-pluginAudioGridder Plugin1.1.1audiogridder-serverAudioGridder Server1.1.1audioscrobblerAudioscrobbler0.9.15audioslicerAudioSlicer1.1.1audirvanaAudirvana3.5.50,3580audiusAudius0.24.32augurAugur1.16.11auralAural Player3.3.1aurora-hdrAurora HDR1.0.1,6438auryoAuryo2.5.4authyAuthy Desktop1.9.0autodesk-fusion360Autodesk Fusion 360latestautodmgAutoDMG1.9autofirmaAutoFirma1.6.5automuteAutoMute1.1autopkgrAutoPkgr1.5.7autovolumeAutoVolume1.0.1autumnAutumn1.0.7avast-secure-browserAvast Secure Browser95.0.1324.70avast-secureline-vpnAvast SecureLine VPN2.1.4avast-securityAvast Security4.0,2.0avg-antivirusAVG Antivirus for Mac4.0,2.0aviatrix-vpn-clientAviatrix VPN Client2.14.14avibrazil-rdmRDM2.2avidcodecsleAvid Codecs LE2.7.6,3B39AE16avidemuxAvidemux2.7.8avira-antivirusAvira AntiviruslatestavitoolsAVItools3.7.2avocodeAvocode4.15.4avogadroAvogadro1.95.1avtouchbarAVTouchBar3.0.7,2021.08awaAWA1.5.7awareAware1.0.6awarenessAwareness1.1awips-pythonAWIPS Pythonlatestaws-vaultaws-vault6.3.1aws-vpn-clientAWS Client VPN1.4.0axure-rpAxure RP10.0.0.3851azirevpnAzireVPN0.5azure-data-studioAzure Data Studio1.33.1babeleditBabelEdit2.9.2back-in-timeBack-In-Time5.1.8backblazeBackblaze8.0.1.568backblaze-downloaderBackblaze Downloader7.0.2.474background-musicBackground Music0.3.2backlogBacklog1.8.0backuploupeBackupLoupe3.5.2,2278badlion-clientBadlion Client3.5.5baiduinputBaidu InputlatestbaidunetdiskBaidu NetDisk4.2.4balance-lockBalance Lock1.1,568balenaetcherEtcher1.7.0ballastballast1.2.1balsamiq-wireframesBalsamiq Wireframes4.3.3bandageBandage0.8.1bankidBankID7.11.0banking-4Banking 47.6.2,7777banksiaguiBanksiaGui0.53banktivityBanktivity8.5.4bansheeBanshee2.6.1baretorrentbaretorrent0.4.4baritoneBaritone1.0.9barrierBarrier2.4.0bartenderBartender3.1.25,31125baseMenial Base2.5.2,20502basecampBasecamp3basictexBasicTeX2021.0325batchmodBatChmod1.7b5,175bathyscapheBathyScaphe3.1.0,1089batteriesBatteries2.1.9battery-buddyBattery Buddy1.0.3,11battery-reportBattery Report1.2.0battle-netBlizzard Battle.netlatestbattlescribeBattleScribe2.03.21baudlinebaudline1.08bbc-iplayer-downloadsBBC iPlayer Downloads2.13.5bbeditBBEdit14.0.2bdashBdash1.11.1bdinfoBDInfo1.0beacon-scannerBeaconScanner1.1.13beaker-browserBeaker Browser1.1.0beamerBeamer3.5,35001beanBean3.4.5beardedspiceBeardedSpice2.2.3beatunesbeaTunes5.2.24beeBee3.1.5,5468beekeeper-studioBeekeeper Studio2.1.5beeperBeeper2.10.3beersmithBeerSmith3.2.7berrycastBerrycast0.34.12bespokeBespoke Synth1.1.0bestresBestRes1.0,100:1426778671betaflight-configuratorBetaflight-Configurator10.7.1betelgueseBetelguese1.1better-window-managerBetter Window Manager1.14,15betterdiscord-installerbetterdiscord1.1.1betterdummybetterdummy1.0.10bettertouchtoolBetterTouchTool3.624,1774betterzipBetterZip5.1.1betweenBetween1.0.8betwixtBetwixt1.6.1beyond-compareBeyond Compare4.4.0.25886bfxrBfxr1.5.1bibdeskBibDesk1.8.7,5747big-mean-folder-machineBig Mean Folder Machine2.43biglybtbiglybt2.8.0.0bilibiliBilibili2.56biliminibilimini1.5.6billings-proBillings Pro1.7.18,37803binanceBinance1.26.1binary-ninjaBinary Ninja2.2.2487bingpaperBingPaper0.11.1,46binoBino1.6.6biopassfidoBioPass FIDO2 Manager2.1.0birdfontBirdFont4.20.0biscuitBiscuit1.2.24bisqBisq1.7.5bit-fiddleBit Fiddle1.4.2bit-slicerBit Slicer1.7.11bitbarBitBar1.10.1bitcoin-coreBitcoin Core22.0bitmessageBitmessage0.6.3.2bitrix24Bitrix2411.1.41.57bitsharesBitShares5.0.210216bitwardenBitwarden1.29.1bitwig-studioBitwig Studio4.0.7black-inkBlack Ink2.1.9,2788blackhole-16chBlackHole 16ch0.2.10blackhole-2chBlackHole 2ch0.2.10blackhole-64chBlackHole 64ch0.2.10blenderBlender2.93.6blender-benchmarkBlender Open Data Benchmark2.0.4bleunlockBLEUnlock1.11blheli-configuratorBLHeli Configurator1.2.0blink1controlBlink1Control2.2.5bliskBlisk Browser16.1.94.111blitzBlitz1.16.2blobby-volley2Blobby Volley 21.0blobsaverblobsaver3.0.4blockbenchBlockbench4.0.4blockblockBlockBlock2.0.5blockstackBlockstack0.37.0blocsBlocs4.4.1,441bloodhoundbloodhound4.0.3bloomrpcBloomRPC1.5.3blu-ray-playerMacgo Mac Blu-ray Player3.3.21,211028_0110blu-ray-player-proMacgo Mac Blu-ray Player Pro3.3.21,211028_0110bluefishBluefish2.2.12bluegriffonBlueGriffon3.1blueharvestBlueHarvest8.0.10bluejBlueJ5.0.2bluejeansBlueJeans2.32.0.170bluesenseBlueSense1.3.1,1657bluesnoozeBluesnooze1.1bluestacksBlueStacks4.270.1.2803,c610c2d26...bluetilityBluetility1.3bluewalletBlueWallet6.2.12blurredBlurred1.2.0bobBob0.6.1boincBerkeley Open Infrastructure for Network Computing7.16.19bome-networkBome Network1.4bonitastudiocommunityBonita Studio Community Edition2021.2-u0bonjeffBonjeff2.0.0bonjour-browserBonjour Browser1.5.6bookendsBookends14.0.2bookmacsterBookMacster2.12boomBoom1.7.1,101.7.1039boom-3dBoom 3D1.3.12,101.3.12012boopBoop1.4.0boost-noteBoostnote.Next0.22.0boostnoteBoostnote0.16.1bootchampBootChamp1.7bootstrap-studioBootstrap Studio5.8.5bootxchangerBootXChanger2.0bossabossa1.9.1bot-framework-emulatorMicrosoft Bot Framework Emulator4.14.1bowtieBowtie1.5,1500box-driveBox Drive2.19.294box-notesBox Notes1.4.0box-syncBox Sync4.0.8009box-toolsBox ToolslatestboxcryptorBoxcryptor2.42.1436boxerBoxer1.4.0boxofsnoo-fairmountFairmount1.1.3boxy-suiteBoxy SuitelatestbracketsBrackets1.14.2brain-workshopBrain Workshop4.8.4brainfmBrain.fm0.1.5brave-browserBrave1.32.106.0,132.106breaktimerBreakTimer1.0.3breitbandmessungBreitbandmessung2.0.4brewletBrewlet1.5-universalbrewservicesmenubarBrew Services Menubar4.0brewtargetbrewtarget2.3.0briaBria6.5.1,108815bricklink-partdesignerPartDesigner1.0.6_5bricklink-studioStudio2.2.9_1bricksmithBricksmith3.0brightnessBrightness1.1.2brightness-syncBrightness Sync2.3.2briskBrisk1.2.0brisyncBrisync1.3.1brl-cad-mgedBRL-CAD7.24.0brookBrook20210701brooklynBrooklyn2.1.0browserosaurusBrowserosaurus15.3.9browserstacklocalBrowserStack Local Testing3.3.1btcpayserver-vaultBTCPayServer Vault2.0.1buboBubo1.0bucketsBuckets0.60.1bugdomBugdom1.3.1buildsettingextractorBuildSettingExtractor1.4.3bunchBunch1.4.5,124bunqcommunity-bunqbunqDesktop0.9.10burnBurn3.1.5burp-suiteBurp Suite Community Edition2021.10burp-suite-professionalBurp Suite Professional2021.10busycalBusyCal2021.4.2,2021-11-05-00-14busycontactsBusyContacts1.6.2,2021-11-05-00-56butlerButler4.4.4,5115buttBroadcast Using This Tool0.1.32butterButter0.3.0buttercupButtercup2.13.0bwanaBwana2.8.1bzflagBZFlag2.4.22c0re100-qbittorrentqBittorrent Enhanced 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How To: The Hacks Behind Cracking, Part 1: How to Bypass Software Registration

If you've ever wondered how software pirates can take software and crack it time and time again, even with security in place, this small series is for you. Even with today's most advanced methods of defeating piracy in place, it is still relatively easy to crack almost any program in the world. This is mainly due to computer processes' ability to be completely manipulated by an assembly debugger. Using this, you can completely bypass the registration process by making it skip the application's key code verification process without using a valid key. This works because assembly allows you to speak directly to the processor and force a skip over the registration process.

In this Null Byte, let's go over how cracking could work in practice by looking at an example program (a program that serves no purpose other than for me to hack). I will not be walking you through how to actually crack a legitimate program, because I can't just crack a program for demonstration, but the techniques applied to my examples should give you the foundation needed to create your own. At that point, it's a test of your morals if you want to use your knowledge for good or bad.


  • Windows (for examples only, debuggers exist across platforms)
  • A debugger installed: IDA, ollydbg, etc. (ollydbg will be used in examples)

Step 1 Test the Program

First, run the program that you are attempting to reverse engineer and try to activate it with a random key to verify that you need a valid software key to proceed. This is to verify that we can come up with the keys.

Step 2 Run the Program in a Debugger

  1. Run ollydbg.
  2. Open up the program you wish to bypass with ollydbg.
  3. Click the play button to run the program with the debugger attached.
  4. Right click the CPU window, and click Search For > All intermodular calls.
  5. Search for high interest DLLs. GETDLGITEMTEXT, will be for dialog boxes, which get called when you try to enter a software key. By stepping into the function with the debugger, we can examine the registration specifically. SENDDLGITEM could be used as well.
  6. Test to see which one works to break out of the activation loop by right clicking the DLL call and setting a breakpoint for all instances of that call.The Hacks Behind Cracking, Part 1: How to Bypass Software Registration
  7. Resume the program and enter any software key you feel like. If the debugger breaks (pauses the program's execution) after entering your key, then you know you found DLL in step 5.
  8. Press F8 back in the CPU window to force the next step until you get to the TEST EAX. EAX is the return of a value, which means that a check is being performed here. Upon examination, we can see that the EAX is checking for a number that is not equal to a null value. This means that if it is replaced with anything other than null, it will run.The Hacks Behind Cracking, Part 1: How to Bypass Software Registration
  9. Right-click the EAX and change it in hex value to 1, instead of 0.
  10. Resume the program again, and you will have successfully activated the program.The Hacks Behind Cracking, Part 1: How to Bypass Software RegistrationAnd for proof it was registered to me:The Hacks Behind Cracking, Part 1: How to Bypass Software Registration

This works because you are making the process jump from one register and skip the one that verifies the key entered. To exploit the key registration algorithm, keep an eye out for part two of this tutorial on making the key generator. Hooray for assembly!

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Software cracking

Modification of software, often to use it for free

Software cracking (known as "breaking" mostly in the 1980s[1]) is the modification of software to remove or disable features which are considered undesirable by the person cracking the software, especially copy protection features (including protection against the manipulation of software, serial number, hardware key, date checks and disc check) or software annoyances like nag screens and adware.

A crack refers to the means of achieving, for example a stolen serial number or a tool that performs that act of cracking.[2] Some of these tools are called keygen, patch, or loader. A keygen is a handmade product serial number generator that often offers the ability to generate working serial numbers in your own name. A patch is a small computer program that modifies the machine code of another program. This has the advantage for a cracker to not include a large executable in a release when only a few bytes are changed.[3] A loader modifies the startup flow of a program and does not remove the protection but circumvents it.[4][5] A well-known example of a loader is a trainer used to cheat in games.[6]Fairlight pointed out in one of their .nfo files that these type of cracks are not allowed for warez scene game releases.[7][4][8] A nukewar has shown that the protection may not kick in at any point for it to be a valid crack.[9]

The distribution of cracked copies is illegal in most countries. There have been lawsuits over cracking software.[10] It might be legal to use cracked software in certain circumstances.[11] Educational resources for reverse engineering and software cracking are, however, legal and available in the form of Crackme programs.


The first software copy protection was applied to software for the Apple II,[12]Atari 8-bit family, and Commodore 64 computers.[citation needed]. Software publishers have implemented increasingly complex methods in an effort to stop unauthorized copying of software.

On the Apple II, the operating system directly controls the step motor that moves the floppy drive head, and also directly interprets the raw data, called nibbles, read from each track to identify the data sectors. This allowed complex disk-based software copy protection, by storing data on half tracks (0, 1, 2.5, 3.5, 5, 6...), quarter tracks (0, 1, 2.25, 3.75, 5, 6...), and any combination thereof. In addition, tracks did not need to be perfect rings, but could be sectioned so that sectors could be staggered across overlapping offset tracks, the most extreme version being known as spiral tracking. It was also discovered that many floppy drives did not have a fixed upper limit to head movement, and it was sometimes possible to write an additional 36th track above the normal 35 tracks. The standard Apple II copy programs could not read such protected floppy disks, since the standard DOS assumed that all disks had a uniform 35-track, 13- or 16-sector layout. Special nibble-copy programs such as Locksmith and Copy II Plus could sometimes duplicate these disks by using a reference library of known protection methods; when protected programs were cracked they would be completely stripped of the copy protection system, and transferred onto a standard format disk that any normal Apple II copy program could read.

One of the primary routes to hacking these early copy protections was to run a program that simulates the normal CPU operation. The CPU simulator provides a number of extra features to the hacker, such as the ability to single-step through each processor instruction and to examine the CPU registers and modified memory spaces as the simulation runs (any modern disassembler/debugger can do this). The Apple II provided a built-in opcode disassembler, allowing raw memory to be decoded into CPU opcodes, and this would be utilized to examine what the copy-protection was about to do next. Generally there was little to no defense available to the copy protection system, since all its secrets are made visible through the simulation. However, because the simulation itself must run on the original CPU, in addition to the software being hacked, the simulation would often run extremely slowly even at maximum speed.

On Atari 8-bit computers, the most common protection method was via "bad sectors". These were sectors on the disk that were intentionally unreadable by the disk drive. The software would look for these sectors when the program was loading and would stop loading if an error code was not returned when accessing these sectors. Special copy programs were available that would copy the disk and remember any bad sectors. The user could then use an application to spin the drive by constantly reading a single sector and display the drive RPM. With the disk drive top removed a small screwdriver could be used to slow the drive RPM below a certain point. Once the drive was slowed down the application could then go and write "bad sectors" where needed. When done the drive RPM was sped up back to normal and an uncracked copy was made. Of course cracking the software to expect good sectors made for readily copied disks without the need to meddle with the disk drive. As time went on more sophisticated methods were developed, but almost all involved some form of malformed disk data, such as a sector that might return different data on separate accesses due to bad data alignment. Products became available (from companies such as Happy Computers) which replaced the controller BIOS in Atari's "smart" drives. These upgraded drives allowed the user to make exact copies of the original program with copy protections in place on the new disk.

On the Commodore 64, several methods were used to protect software. For software distributed on ROM cartridges, subroutines were included which attempted to write over the program code. If the software was on ROM, nothing would happen, but if the software had been moved to RAM, the software would be disabled. Because of the operation of Commodore floppy drives, one write protection scheme would cause the floppy drive head to bang against the end of its rail, which could cause the drive head to become misaligned. In some cases, cracked versions of software were desirable to avoid this result. A misaligned drive head was rare usually fixing itself by smashing against the rail stops. Another brutal protection scheme was grinding from track 1 to 40 and back a few times.

Most of the early software crackers were computer hobbyists who often formed groups that competed against each other in the cracking and spreading of software. Breaking a new copy protection scheme as quickly as possible was often regarded as an opportunity to demonstrate one's technical superiority rather than a possibility of money-making. Some low skilled hobbyists would take already cracked software and edit various unencrypted strings of text in it to change messages a game would tell a game player, often something considered vulgar. Uploading the altered copies on file sharing networks provided a source of laughs for adult users. The cracker groups of the 1980s started to advertise themselves and their skills by attaching animated screens known as crack intros in the software programs they cracked and released. Once the technical competition had expanded from the challenges of cracking to the challenges of creating visually stunning intros, the foundations for a new subculture known as demoscene were established. Demoscene started to separate itself from the illegal "warez scene" during the 1990s and is now regarded as a completely different subculture. Many software crackers have later grown into extremely capable software reverse engineers; the deep knowledge of assembly required in order to crack protections enables them to reverse engineerdrivers in order to port them from binary-only drivers for Windows to drivers with source code for Linux and other free operating systems. Also because music and game intro was such an integral part of gaming the music format and graphics became very popular when hardware became affordable for the home user.

With the rise of the Internet, software crackers developed secretive online organizations. In the latter half of the nineties, one of the most respected sources of information about "software protection reversing" was Fravia's website.


The High Cracking University (+HCU) was founded by Old Red Cracker (+ORC), considered a genius of reverse engineering and a legendary figure in RCE, to advance research into Reverse Code Engineering (RCE). He had also taught and authored many papers on the subject, and his texts are considered classics in the field and are mandatory reading for students of RCE.[13]

The addition of the "+" sign in front of the nickname of a reverser signified membership in the +HCU. Amongst the students of +HCU were the top of the elite Windows reversers worldwide.[13] +HCU published a new reverse engineering problem annually and a small number of respondents with the best replies qualified for an undergraduate position at the university.[13]

+Fravia was a professor at +HCU. Fravia's website was known as "+Fravia's Pages of Reverse Engineering" and he used it to challenge programmers as well as the wider society to "reverse engineer" the "brainwashing of a corrupt and rampant materialism". In its heyday, his website received millions of visitors per year and its influence was "widespread".[13]

Nowadays most of the graduates of +HCU have migrated to Linux and few have remained as Windows reversers. The information at the university has been rediscovered by a new generation of researchers and practitioners of RCE who have started new research projects in the field.[13]


The most common software crack is the modification of an application's binary to cause or prevent a specific key branch in the program's execution. This is accomplished by reverse engineering the compiled program code using a debugger such as SoftICE,[14]x64dbg, OllyDbg,[15]GDB, or MacsBug until the software cracker reaches the subroutine that contains the primary method of protecting the software (or by disassembling an executable file with a program such as IDA). The binary is then modified using the debugger or a hex editor or monitor in a manner that replaces a prior branching opcode with its complement or a NOPopcode so the key branch will either always execute a specific subroutine or skip over it. Almost all common software cracks are a variation of this type. Proprietary software developers are constantly developing techniques such as code obfuscation, encryption, and self-modifying code to make this modification increasingly difficult. Even with these measures being taken, developers struggle to combat software cracking. This is because it is very common for a professional to publicly release a simple cracked EXE or Retrium Installer for public download, eliminating the need for inexperienced users to crack the software themselves.

A specific example of this technique is a crack that removes the expiration period from a time-limited trial of an application. These cracks are usually programs that alter the program executable and sometimes the .dll or .so linked to the application. Similar cracks are available for software that requires a hardware dongle. A company can also break the copy protection of programs that they have legally purchased but that are licensed to particular hardware, so that there is no risk of downtime due to hardware failure (and, of course, no need to restrict oneself to running the software on bought hardware only).

Another method is the use of special software such as CloneCD to scan for the use of a commercial copy protection application. After discovering the software used to protect the application, another tool may be used to remove the copy protection from the software on the CD or DVD. This may enable another program such as Alcohol 120%, CloneDVD, Game Jackal, or Daemon Tools to copy the protected software to a user's hard disk. Popular commercial copy protection applications which may be scanned for include SafeDisc and StarForce.[16]

In other cases, it might be possible to decompile a program in order to get access to the original source code or code on a level higher than machine code. This is often possible with scripting languages and languages utilizing JIT compilation. An example is cracking (or debugging) on the .NET platform where one might consider manipulating CIL to achieve one's needs. Java'sbytecode also works in a similar fashion in which there is an intermediate language before the program is compiled to run on the platform dependent machine code.

Advanced reverse engineering for protections such as SecuROM, SafeDisc, StarForce, or Denuvo requires a cracker, or many crackers to spend much more time studying the protection, eventually finding every flaw within the protection code, and then coding their own tools to "unwrap" the protection automatically from executable (.EXE) and library (.DLL) files.

There are a number of sites on the Internet that let users download cracks produced by warez groups for popular games and applications (although at the danger of acquiring malicious software that is sometimes distributed via such sites).[17] Although these cracks are used by legal buyers of software, they can also be used by people who have downloaded or otherwise obtained unauthorized copies (often through P2P networks).

See also[edit]


  1. ^Kevelson, Morton (October 1985). "Isepic". Ahoy!. pp. 71–73. Retrieved June 27, 2014.
  2. ^Tulloch, Mitch (2003). Microsoft Encyclopedia of Security(PDF). Redmond, Washington: Microsoft Press. p. 68. ISBN .
  3. ^Craig, Paul; Ron, Mark (April 2005). "Chapter 4: Crackers". In Burnett, Mark (ed.). Software Piracy Exposed - Secrets from the Dark Side Revealed. Publisher: Andrew Williams, Page Layout and Art: Patricia Lupien, Acquisitions Editor: Jaime Quigley, Copy Editor: Judy Eby, Technical Editor: Mark Burnett, Indexer: Nara Wood, Cover Designer: Michael Kavish. United States of America: Syngress Publishing. pp. 75–76. doi:10.1016/B978-193226698-6/50029-5. ISBN .
  4. ^ abFLT (January 22, 2013). "The_Sims_3_70s_80s_and_90s_Stuff-FLT".
  5. ^Shub-Nigurrath [ARTeam]; ThunderPwr [ARTeam] (January 2006). "Cracking with Loaders: Theory, General Approach, and a Framework". CodeBreakers Magazine. Universitas-Virtualis Research Project. 1 (1).
  6. ^Nigurrath, Shub (May 2006). "Guide on how to play with processes memory, writing loaders, and Oraculumns". CodeBreakers Magazine. Universitas-Virtualis Research Project. 1 (2).
  7. ^FLT (September 29, 2013). "Test_Drive_Ferrari_Legends_PROPER-FLT".
  8. ^SKIDROW (January 21, 2013). "Test.Drive.Ferrari.Racing.Legends.Read.Nfo-SKIDROW".
  9. ^"Batman.Arkham.City-FiGHTCLUB nukewar". December 2, 2011. Archived from the original on September 13, 2014.
  10. ^Cheng, Jacqui (September 27, 2006). "Microsoft files lawsuit over DRM crack". Ars Technica.
  11. ^Fravia (November 1998). "Is reverse engineering legal?".
  12. ^Pearson, Jordan (July 24, 2017). "Programmers Are Racing to Save Apple II Software Before It Goes Extinct". Motherboard. Archived from the original on September 27, 2017. Retrieved January 27, 2018.
  13. ^ abcdeCyrus Peikari; Anton Chuvakin (January 12, 2004). Security Warrior. "O'Reilly Media, Inc.". p. 31. ISBN .
  14. ^Ankit, Jain; Jason, Kuo; Jordan, Soet; Brian, Tse (April 2007). "Software Cracking (April 2007)"(PDF). The University of British Columbia - Electrical and Computer Engineering. Retrieved January 27, 2018.
  15. ^Wójcik, Bartosz. "Reverse engineering tools review". PELock. Archived from the original on September 13, 2017. Retrieved February 16, 2018.
  16. ^Gamecopyworld Howto
  17. ^McCandless, David (April 1, 1997). "Warez Wars". Wired. ISSN 1059-1028. Retrieved February 4, 2020.
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Dahua And Hikvision Master Password Backdoor

I think that having an easy to figure out master password that can be easily calculated is a big problem. I believe that you should need 1) physical access, such as a reset button, and 2) that it should wipe all settings. This way, a casual person scanning the network can't get in, and two that the person using the device will hopefully notice that all settings have been wiped.

Having a back door is just as bad as having a vulnerability...

'Baby Monitor Hack' Could Happen To 40,000 Other Foscam Users

If the password generator uses the time and date, if the clock is off then you are out of luck. I have seen cameras that are off by a day or weeks or years... If the generator uses the serial number, then usually you again need physical access to the device.

Once a password formula is know and out in the wild, you are at risk. A generator on the other hand that is controlled by the manufacturer, and uses the time/date so that it "expires" and the request is logged with who requested it, etc. that is better, but not great...






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5.4. DES, Breaking DES, and DES Variants

The Data Encryption Standard (DES) started life in the mid-1970s, Smart Generator Hack v4.1 crack serial keygen, adopted by the National Bureau of Standards (NBS) [now the National Institute of Standards and Technology (NIST)] Smart Generator Hack v4.1 crack serial keygen Federal Information Processing Standard 46 (FIPS PUB 46-3) and by the American National Standards Institute (ANSI) as X3.92.

As mentioned earlier, DES uses the Data Encryption Algorithm (DEA), a secret key block-cipher employing a 56-bit key operating on 64-bit blocks, Smart Generator Hack v4.1 crack serial keygen. FIPS PUB 81 describes four modes of DES operation: Electronic Codebook (ECB), Cipher Block Chaining (CBC), Cipher Feedback (CFB), and Output Feedback (OFB). Despite all of these options, ECB is the most commonly deployed mode of operation.

NIST finally declared DES obsolete in 2004, and withdrew FIPS PUB 46-3, 74, and 81 (Federal Register, July 26, 2004, 69(142), Smart Generator Hack v4.1 crack serial keygen, 44509-44510). Although other block ciphers have replaced DES, it is still interesting to see how DES encryption is performed; not only is it sort of neat, but DES was the first crypto scheme commonly seen in non-governmental applications and was the catalyst for modern "public" cryptography and the first public Feistel cipher. DES still remains in many products — and cryptography students and cryptographers will continue to study DES for years to come.

DES Operational Overview

DES uses a 56-bit key. In fact, the 56-bit key is divided into eight 7-bit blocks and an 8th odd parity bit is added to each block (i.e., a "0" or "1" is added to the block so that there are an odd number of 1 bits in each 8-bit block). By using the 8 parity bits for rudimentary error detection, a DES key is actually 64 bits in length for computational purposes although it only has 56 bits worth of randomness, or entropy (See Section A.3 for a brief discussion of entropy and information theory).

FIGURE 11: DES enciphering algorithm.

DES then acts on 64-bit blocks of the plaintext, invoking 16 rounds of permutations, swaps, and substitutes, as shown in Figure 11. The standard includes tables describing Smart Generator Hack v4.1 crack serial keygen of the selection, permutation, and expansion operations mentioned below; these aspects of the algorithm are not secrets. The basic DES steps are:

  1. The 64-bit block to be encrypted undergoes an initial permutation (IP), where each bit is moved to a new bit position; e.g., the 1st, 2nd, and 3rd bits are moved to the 58th, 50th, and 42nd position, respectively.

  2. The 64-bit permuted input is divided into two 32-bit blocks, called left and right, respectively, Smart Generator Hack v4.1 crack serial keygen. The initial values of the left and right blocks are denoted L0 and R0.

  3. There are then 16 rounds of operation on the L and R blocks. During each iteration (where n ranges from 1 to 16), the following formulae apply:

      Ln = Rn-1
      Rn = Ln-1 ⊕ f(Rn-1,Kn)

    At any given step in the process, then, the new L block value is merely taken from the prior R block value. The new R block is calculated by taking the bit-by-bit exclusive-OR (XOR) of the prior L block with the results of applying the DES cipher function, f, to the prior R block and Kn. (Kn is a 48-bit value derived from the 64-bit DES key. Each round uses a different 48 bits according to the standard's Key Schedule algorithm.)

    The cipher function, f, combines the 32-bit R block value and the 48-bit subkey in the following way. First, the 32 bits in the R block are expanded to 48 bits by an expansion function (E); the extra 16 bits are found by repeating the bits in 16 predefined positions. The 48-bit expanded R-block is SpyHunter 5.10.7 Crack Key + License Code {2021} Download ORed with the 48-bit subkey. The result is a 48-bit value that is then divided into eight 6-bit blocks. These are fed as input into 8 selection (S) boxes, denoted S1.,S8. Each 6-bit input yields a 4-bit output using a table lookup based on the 64 possible inputs; this results in a 32-bit output from the S-box. The 32 bits are then rearranged by a permutation function (P), Smart Generator Hack v4.1 crack serial keygen, producing the results from the cipher function.

  4. The results from the final DES round — i.e., L16 and R16 — are recombined into a 64-bit value and fed into an inverse initial permutation (IP-1). At this step, the bits are rearranged into their original positions, so that the 58th, 50th, and 42nd bits, for example, are moved back into the 1st, 2nd, and 3rd positions, respectively. The output from IP-1 is the 64-bit ciphertext block.

Consider this example using DES in CBC mode with the following 56-bit key and input:

    Key: 1100101 0100100 1001001 0011101 0110101 0101011 1101100 0011010 = 0x6424491D352B6C1A

    Input character string (ASCII/IA5): +2903015-08091765
    Input string (hex): 0x2B323930333031352D3038303931373635

    Output string (hex): 0x9812CB620B2E9FD3AD90DE2B92C6BBB6C52753AC43E1AFA6
    Output character string (BASE64): mBLLYgsun9OtkN4rksa7tsUnU6xD4a+m

Observe that we start with a 17-byte input message. DES acts on eight bytes at a time, Smart Generator Hack v4.1 crack serial keygen, so this message is padded to 24 bytes and provides three "inputs" to the cipher algorithm (we don't see the padding here; it is appended by the DES code). Since we have three input blocks, we get 24 bytes of output from the three 64-bit (eight byte) output blocks.

If you want to test this, a really good free, online DES calculator hosted by the Information Security Group at University College London. An excellent step-by-step example of DES can also be found at J. Orlin Grabbe's The DES Algorithm Illustrated page.

NOTE: You'll notice that the output above is shown in BASE64. BASE64 is a 64-character alphabet — i.e., a six-bit character code composed of upper- and lower-case letters, the digits 0-9, and a few punctuation characters — that is commonly used as a way to display binary data. A byte has eight bits, Smart Generator Hack v4.1 crack serial keygen, or 256 values, but not all 256 ASCII characters are defined and/or printable. BASE64, simply, takes a binary string (or file), divides it into six-bit blocks, and translates each block into a printable character. More information about BASE64 can be found at my BASE64 Alphabet page or at Wikipedia.

Breaking DES

The mainstream cryptographic community has long held that DES's 56-bit key was too short to withstand a brute-force attack from modern computers. Remember Moore's Law: computer power doubles every 18 months. Given that increase in power, a key that could withstand a brute-force guessing attack in 1975 could hardly be expected to withstand the same attack a quarter century later.

DES is even more vulnerable to a brute-force attack because it is often used to encrypt words, meaning that the entropy of the 64-bit block is, effectively, greatly reduced. That is, if we are encrypting random bit streams, then a given byte might contain any one of 28 (256) possible values and the entire 64-bit block has 264, or Smart Generator Hack v4.1 crack serial keygen 18.5 quintillion, possible values. If we are encrypting words, however, we are most likely to find a limited set of bit patterns; perhaps 70 or so if we account for upper and lower case letters, the numbers, space, and some Smart Generator Hack v4.1 crack serial keygen. This means that only about ¼ of the bit combinations of a given byte are likely to occur.

Despite this criticism, the U.S. government insisted throughout the mid-1990s that 56-bit DES was secure and virtually unbreakable if appropriate precautions were taken. In response, RSA Laboratories sponsored a series of cryptographic challenges to prove that DES was no longer appropriate for use.

DES Challenge I was launched in March 1997. It Smart Generator Hack v4.1 crack serial keygen completed in 84 days by R. Verser in a collaborative effort using thousands of computers on the Internet.

The first DES Challenge II lasted 40 days in early 1998. This problem was solved by, a worldwide distributed computing network using the spare CPU cycles of computers around the Internet (participants in's activities load a client program that runs in the background, conceptually similar to the SETI @Home "Search for Extraterrestrial Intelligence" project). The systems were checking 28 billion keys per second by the end of the project.

The second DES Challenge II lasted less than 3 days. On July 17, 1998, the Electronic Frontier Foundation (EFF) announced the construction of hardware that could brute-force a DES key in an average of 4.5 days. Called Deep Crack, the device could check 90 billion keys per second and cost only about $220,000 including design (it was erroneously and widely reported that subsequent devices could be built for as little as $50,000). Since the design is scalable, this suggests that an organization could build a DES cracker that could break 56-bit keys in an average of a day for as little as $1,000,000. Information about the hardware design Smart Generator Hack v4.1 crack serial keygen all software can be Smart Generator Hack v4.1 crack serial keygen from the EFF.

The DES Challenge III, launched in January 1999, was broken is less than a day by the combined efforts of Deep Crack and This is widely considered to have been the final nail in DES's coffin.

The Deep Crack algorithm is actually quite interesting. The general approach that the DES Cracker Project took was not to break the algorithm mathematically but instead to launch a brute-force attack by guessing every possible key. A 56-bit key yields 256, or about 72 quadrillion, possible values. So the DES cracker team looked for any shortcuts they could find! First, they assumed that some recognizable plaintext would appear in the decrypted string even though they didn't have a specific known plaintext block. They then applied all 256 possible key values to the 64-bit block (I don't mean to make this sound simple!). The system checked to see if the decrypted value of the block was "interesting," which they defined as bytes containing one of the alphanumeric characters, space, or some punctuation. Since the likelihood of a single byte being "interesting" is about ¼, then the likelihood of the entire 8-byte stream being "interesting" is about ¼8, or 1/65536 (½16). This dropped the number of possible keys that might yield positive results to about 240, or about a trillion.

They then made the assumption that an "interesting" 8-byte block would be followed by another "interesting" block. So, if the first block of ciphertext decrypted to something interesting, they decrypted the next block; otherwise, they abandoned this key. Only if the second Smart Generator Hack v4.1 crack serial keygen was also "interesting" did they examine the key closer. Looking for 16 consecutive bytes that were "interesting" meant that only 224, or 16 million, Smart Generator Hack v4.1 crack serial keygen, keys needed to be examined further. This further examination was primarily to see if the text made any sense. Note that possible "interesting" blocks might be 1hJ5&aB7 or DEPOSITS; the latter is more likely to produce a better result. And even a slow laptop today can search through lists of only a few million items in a relatively short period of time. (Interested readers are urged to read Cracking DES and EFF's Cracking DES page.)

It is well beyond the scope of this paper to discuss other forms of breaking DES and other codes. Nevertheless, it is worth mentioning a couple of forms of cryptanalysis that have been shown to be effective against DES. Differential cryptanalysis, invented in 1990 by E. Biham and A. Shamir (of RSA fame), is a chosen-plaintext attack. By selecting pairs of plaintext with particular differences, the cryptanalyst examines the differences in the resultant ciphertext pairs. Linear plaintext, invented by M. Matsui, uses a linear approximation to analyze the actions of a block cipher (including DES). Both of these attacks can be more efficient than brute force.

DES Variants

Once DES was "officially" broken, several variants appeared. But none of them came overnight; work at hardening DES had already been underway. In the early 1990s, there was a proposal to increase the security of DES by effectively increasing the key length by using multiple keys with multiple passes. But for this scheme to work, it had to first be shown that the DES function is not a group, as defined in mathematics. If DES was a group, then we could show that for two DES keys, X1 and X2, applied to some plaintext (P), we can find a single equivalent key, X3, that would provide the same result; i.e.,

EX2(EX1(P)) Smart Generator Hack v4.1 crack serial keygen EX3(P)

where EX(P) represents DES encryption of some plaintext P using DES key X. If DES were a group, it wouldn't matter how many keys and passes we applied to some plaintext; we could always find a single 56-bit key that would provide the same result.

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Top 6 Free Serial Keys Sites for Any Software in 2020

If you are urgently looking for the serial key of a paid software, then here might be the last stop before you give up. Nowadays, it is almost impossible to handle any task in work or study without the help of software, such as image processing, document editor, and speech-to-text. However, most of those programs only allow paid users to access advanced or even basic features. What if you’re a student or suffering the down and out? Don’t worry. We have tested dozens of websites and now present you the top 6 free serial keys sites for all kinds of software.

Free Serial Keys Sites for Any Software.

Warning: There are potential risks to install cracked software on computer or mobile phone, Smart Generator Hack v4.1 crack serial keygen. It is impossible for the website owners or anyone else to rule out every threat. You’re suggested to try your luck on giveaway sites to download free full version software first.

In case of data loss due to virus attack or any other reasons, make sure to download iReparo Data Recovery Software to get your lost files back as soon as possible.

Top 1. – Free Serial Keys Site for Most Software

If the only standard to rate free serial keys websites is the frequency of updating, then is definitely the best one, which claims to update daily. It might not be true currently, because there is no Smart Generator Hack v4.1 crack serial keygen profit driving after all, but is still the most frequently updated option.

Free Serial Keys Sites for Any Software.

In addition to the update frequency, also features with a precise yet informative web interface. Update date and user rating are two important factors that help users judge whether the free serial keys would work or just a waste of time. Based on the over 120,000 serials in the database, is the most possible sites to find free serial keys that you need.

If we have to pick out some flaws, Smart Generator Hack v4.1 crack serial keygen, then there two on this site. First, there is no category for all the serial keys, so you must know clearly which serial key you need. Second, it does not provide download links, neither for the official packages or cracked copies, but just serial keys.

Top 2. Smart Serials – Threat-Free Serial Keys Site

Smart Serials is another serial number collection website. Though this site provides serials keys and crack files, it is compliant with Digital Millennium Act. If the legal developer of the official software asks, they would possible remove related entries from this site. Basing on the fact that they value copyright, we should rest assured for the safety issue while browsing this website.

Smart Serials is another serial number collection website.

To get down to business, Smart Serials really does good job collecting working serial keys of a lot of useful software, and they continue adding items. You need to search for wanted serial keys by brand names or keywords, or click any of the alphabet to explore more surprise.

The better part of this free serial keys site is that you’ll get both crack file (signup needed for downloads on third-party site) and serial numbers. It is always better with more options. Moreover, in case you fail to find the serial key of a desired software, you can even submit a request on its forums.

Top 3. SerialReactor – Source for the Newest Serials

SerialReactor doesn’t perform as a comprehensive serial keys site during our test, but a few hand-picked apps are listed on its home page with the Smart Generator Hack v4.1 crack serial keygen serial keys, most of which are working and safe. However, manual research often gets back blank result. It should be noted that the Best Results, which will appear on every search result, are not completely trustful. The links will direct you to a third-party download site.

SerialReactor is Source for the Newest Serials.

SerialReactor is not so popular among the users because it is not capable of fetching the serial keys of major premium software like Windows 10, Adobe Photoshop premium, MS Office 2018 etc. You can find the serial keys of small applications which requires very less subscription fees to access the premium access.

It is anyway a choice to give SerialReactor a try if you are unable to find the crack keys of desired applications. Sometimes it will work and there is a probability that you will be able to find the genuine software’s crack keys.

Top 4. Keygens Pro – Full List of Serial Keys for Any Software

The home page of Keygens Pro looks like a product from the last century, but it did surprise us after browsing around this website. You can find almost the cracks and serial numbers of any kind of software. The search results sometimes link users to another website which seems suspicious, but there might have some reason of trick. Anyway, it is safe and fruitful to find serial keys by clicking the links on the home page and the top alphabet list.

Keygens Pro is Full List of Serial Keys for Any Software.

As the name of this website suggests, Keygens Pro works as a website where you can find the crack keys of premium paid applications. This site doesn’t update regularly, but you may suddenly find the latest version of Office tools on the site. At the worst, Keygens Pro will show you a long list of earlier version serial keys for your consideration.

Top 5. KeyGenNinja – Serial Keys and Keygens for Old Software

In case you really can’t find the serial key to activate the newest version of an urgently-needed program, then you may take a look at KeyGenNinja for previous version equivalents. This free serial key site has been running for over 10 years. Though the update is slowing down, there are a huge database of earlier programs, which are still useful for today’s work.

KeyGenNinja is Serial Keys and Keygens for Old Software.

KeyGenNinja, originally known as KeyGenGuru, is probably one of the first site providing genuine crack keys of the major Windows applications to the users. You can find the crack keys of the most secured applications, like Adobe Photoshop, Camscanner, some antivirus software, etc. The official version of these apps requires users to pay subscription fees to access the whole new premium features.

Top 6. Serialbay – Cracks and Serial Numbers for Old Games

It is a hard work which earn little reputation to run a website and provide free serial keys or keygens. That’s why sites like Serialbay has stopped updating for years. Nevertheless, the top serial keys on Serialbay are still working for specific programs. If you have sense of nostalgia and want to play an old game, then give it a try and see if you will be surprised.

Serialbay is Cracks and Serial Numbers for Old Games.

This serial key providing website was known for providing the crack keys of major popular video games, like Call of Duty. Many small and big gamers use this software tool to get the crack keys for free. Serial keys of many premium applications are also available on this website too.

Anyway, don’t forget Serialbay in case you can’t find the serial key you are looking for at all of the above sites. Just type the name and wait for the result.


In this article, we have introduced 6 best sites to find serial keys for any software. The list might be shortened as time goes by, so enjoy the paid apps for free now or never. You should not trust cracked software from unknown sources to avoid virus attack. If you have to, make sure to install one of the best free antivirus software to protect your computer which are the basic versions of the famous security software. It would be best to buy a license and support the developer when you can afford it. After all, if nobody pays, then no one can play. Feel free to share your experience or opinions with us in the comment.

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There are literally a dozen ways in which a cybercrime can be perpretrated, and you need to know what they are

In order to protect yourself you need to know about the different ways in Smart Generator Hack v4.1 crack serial keygen your computer can be compromised and your privacy infringed. In this section, we discuss a few common tools and techniques employed by the cyber criminals. This isn’t an exhaustive list by any means, but will give you a comprehensive idea of the loopholes in

networks and security systems, which can Smart Generator Hack v4.1 crack serial keygen exploited by attackers, and also their possible motives for doing so.

1. Hacking

In simple words, hacking is an act committed by an intruder by accessing your computer system without your permission. Hackers (the people doing the ‘hacking’) are basically computer programmers, who have an advanced understanding of computers and commonly misuse this knowledge for devious reasons. They’re usually technology buffs who have expert-level skills in one particular software program or language. As for motives, there could be several, but the most common are pretty simple and can be explained by a human tendancy such as greed, fame, power, etc. Some people do it purely to show-off their expertise – ranging from relatively harmless activities such as modifying software (and even hardware) to carry out tasks that are outside the creator’s intent, others just want to cause destruction.

Greed and sometimes voyeuristic tendancies may cause a hacker to break into systems to steal personal banking information, a corporation’s financial data, etc. They also try and modify systems so hat they can execute tasks at their whims. Hackers displaying such destructive conduct are also called “Crackers” at times. they are also called “Black Hat” hackers On the other hand, there are those who develop an interest in computer hacking just out of intellectual curiosity. Some companies hire these computer enthusiasts to find flaws in their security systems and help fix them. Referred to as “White Hat” hackers, these guys are against the abuse of computer systems. They attempt to break into network systems purely to alert the owners of flaws. It’s not always altruistic, though, because many do this for fame as well, in order to land jobs with top companies, or just to be termed as security experts. “Grey Hat” is another term used to refer to hacking activities that are a cross between black and white hacking.


Some of the most famous computer geniuses were once hackers who went on to use their skills for constructive technological development. Dennis Ritchie and Ken Thompson, the creators of the UNIX operating system (Linux’s predecessor), were two of them. Shawn Fanning, the developer of Napster, Smart Generator Hack v4.1 crack serial keygen, Mark Zuckerberg of Facebook fame, and many more are also examples. The first step towards preventing hackers from gaining access to your systems is to learn how hacking is done. Of course it is beyond the scope of this Fast Track to go into great details, but we will cover the various techniques used by hackers to get to you via the internet.

a. SQL Injections: An SQL injection is a technique that allows hackers to play upon the security vulnerabilities of the software that runs a web site. It can be used to attack any type of unprotected or improperly protected SQL database. This process involves entering portions of SQL code into a web form entry field – most commonly usernames and passwords – to give the hacker further access to the site backend, or to a particular

user’s account. When you enter logon information into sign-in fields, this information is typically converted to an SQL command. This command checks the data you’ve entered against the relevant table in the database. If your input data matches the data in the table, you’re granted access, if not, you get the kind of error you would have seen when you put in a wrong password. An SQL injection is usually an additional command that when inserted into the web form, tries to change the content of the database to reflect a successful login. It can also be used to retrieve information such as credit card numbers or passwords from unprotected sites.

b. Theft of FTP Passwords: This is another very common way to tamper with web sites. FTP password hacking takes advantage of the fact that many webmasters store their website login information on their poorly protected PCs. The thief searches the victim’s system for FTP Jogos de Baseado em um Romance de Graça para Baixar details, Smart Generator Hack v4.1 crack serial keygen, and then relays them to his own remote computer. He then logs into the web site via the remote computer and modifies the web pages as he or she pleases.

c. Cross-site scripting:

Also known as XSS (formerly CSS, but renamed due to confusion with cascading style sheets), is a very easy way of circumventing a security system. Cross-site scripting is a hard-to-find loophole in a web site, making it vulnerable to attack. In a typical XSS attack, the hacker infects a web page with a malicious client-side script or program. When you visit this web page, the script is automatically downloaded to your browser and executed. Typically, attackers inject HTML, JavaScript, Smart Generator Hack v4.1 crack serial keygen, VBScript, ActiveX or Flash into a vulnerable application to deceive you and gather confidential information. If you want to protect your PC from malicious hackers, investing in a good firewall should be first and foremost. Hacking is done through a network, so it’s very important to stay safe while using the internet. You’ll read more about safety tips in the last chapter of this book.

2. Virus dissemination

Viruses are computer programs that attach themselves to or infect a system or files, and have a tendency to circulate to other computers on a network. They disrupt the computer operation and affect the data stored – either by modifying it or by deleting it altogether. “Worms” unlike viruses don’t need a host to cling on Smart Generator Hack v4.1 crack serial keygen. They merely replicate until they eat up all available memory in the system. The term “worm” is sometimes used to mean selfreplicating “malware” (MALicious softWARE). These terms are often used interchangeably in the context of the hybrid viruses/worms that dominate

Although mankind’s best invention, the net is still a minefield Capture One Pro Keygen MAC Archives threats

the current virus scenario, Smart Generator Hack v4.1 crack serial keygen. “Trojan horses” are different from viruses in their manner of propagation.

They masquerade as a legitimate file, such as an email attachment from a supposed friend with a very believable name, and don’t disseminate themselves. The user can also unknowingly install a Trojan-infected program via drive-by downloads when visiting a website, playing online games or using internet-driven applications. A Trojan horse can cause damage similar to other viruses, such as steal information or hamper/disrupt the functioning of computer systems.

A simple diagram to show how malware can propogate


How does this happen? Well, the malicious code or virus is inserted into the chain of command so that when the infected program is run, the viral code is also executed (or in some cases, runs instead of the legitimate program). Viruses are usually seen as extraneous code attached to a host program, but this isn’t always the case. Sometimes, the environment is manipulated so that calling a legitimate uninfected program calls the viral program. The viral program may also be executed before any other program is run. This can virtually infect every executable file on the computer, even though none of those files’ code was actually tampered with. Viruses that follow this modus operandi include “cluster” or “FAT” (File Allocation Table) viruses, which redirect system pointers to infected files, Smart Generator Hack v4.1 crack serial keygen, associate viruses and viruses that modify the Windows Registry directory entries so that their own code is executed before any other legitimate program.


Computer viruses usually spread via removable media or the internet. A flash disk, CD-ROM, magnetic tape or other storage device that has been in an infected computer infects all future computers in which it’s used. Your computer can also contract viruses from sinister email attachments, rogue web sites or infected software. And these disseminate to every other computer on your network.


All computer viruses cause direct or indirect economic damages. Based on this, there are two categories of viruses:

1) Those that only disseminate and don’t cause intentional damage

2) Those which are programmed to cause damage.

However, even by disseminating, they take Smart Generator Hack v4.1 crack serial keygen plenty of memory space, and time and resources that are spent on the clean-up job. Direct economic damages are caused when viruses alter the information during digital transmission. Considerable expenses are incurred by individuals, firms and authorities for developing and implementing the anti-virus tools to protect computer systems.

3. Logic bombs

A logic bomb, also known as “slag code”, is a malicious piece of code which is intentionally inserted into software to execute a malicious task when triggered by a specific event. It’s not a virus, although it usually behaves in a similar manner. It is stealthily inserted into the program where it lies dormant until specified conditions are met. Malicious software such as viruses and worms often contain logic bombs which are triggered at a specific payload or at a predefined time. The payload of a logic bomb is unknown to the user of the software, and the task that it executes unwanted. Program codes that are scheduled to execute at a particular time are known as “time-bombs&rdquo. For example, the infamous “Friday the 13th” virus which attacked the host systems only on specific dates; it “exploded” (duplicated itself) every Friday that happened to be the thirteenth of a month, thus causing system slowdowns.

Logic bombs are usually employed by disgruntled employees working in the IT sector. You may have heard Parallels Desktop 17 Crack With Activation Key 2021 [Mac/Win] “disgruntled employee syndrome” wherein angry employees who’ve been fired use logic bombs to delete the databases of their employers, stultify the network for a while or even do insider trading. Triggers associated with the execution of logic bombs can be a specific date and time, a missing Activator Archives - Download Pro Crack Software from a database or not putting in a command at the usual time, meaning the person doesn’t work there anymore. Most logic bombs stay only in the network they were employed in. So in most cases, they’re an insider job. This makes them easier to design and execute than a virus, Smart Generator Hack v4.1 crack serial keygen. It doesn’t need to replicate; which is a more complex job. To keep your network protected from the logic bombs, you need constant monitoring of the data and efficient anti-virus software on each of the computers in the network.


There’s another use Smart Generator Hack v4.1 crack serial keygen the type of action carried out in Smart Generator Hack v4.1 crack serial keygen logic bomb “explosion” – to make restricted software trials. The embedded piece of code destroys the software after a defined period of time or renders it unusable until the user pays for its further use. Although this piece of code uses the same technique as a logic bomb, it has a non-destructive, non-malicious and user-transparent use, and is not typically referred to as one.

4. Denial-of-Service attack

A Denial-of-Service (DoS) attack is an explicit attempt by attackers to deny service to intended users of that service. It involves flooding a computer resource with more requests than it can handle consuming its available bandwidth which results in server overload. This causes the resource (e.g. a web server) to crash or slow down significantly so that no one can access it. Using this technique, the attacker can render a web site inoperable by sending massive amounts of traffic to the targeted site. A site may temporarily malfunction or crash completely, in any case resulting in inability of the system to communicate adequately. DoS attacks violate the acceptable use policies of virtually all internet service providers.

Another variation to a denial-of-service attack is known as a “Distributed Denial of Service” (DDoS) attack wherein a number of geographically widespread perpetrators flood the network traffic. Denial-of-Service attacks typically target high profile web site servers belonging to banks and credit card payment gateways. Websites of companies such as Amazon, CNN, Yahoo, Twitter and eBay! are not spared either.

5. Phishing

This a technique of extracting confidential information such as credit card numbers and username password combos by masquerading as a legitimate enterprise. Phishing is typically carried out by email spoofing. You’ve probably received email containing links to legitimate appearing websites. You probably found it suspicious and didn’t click Lucky Patcher Apk Cracked [v9.5.9] Full Version Free Download 2021 link. Smart move.

How phishing can net some really interesting catches

The malware would have installed itself on your computer and stolen private information. Cyber-criminals use social engineering to trick you into downloading malware off the internet or make you fill in your personal information under false pretenses. A phishing scam in an email message can be evaded by keeping certain things in mind.


  • Look for spelling mistakes in the text. Cyber-criminals are not known for their grammar and spelling.

  • Hover your cursor over the adobe acrobat xi pro URL but don’t click. Check if the address matches with the one written in the message.

  • Watch out for fake threats. Did Smart Generator Hack v4.1 crack serial keygen receive a message saying “Your email account will be closed if you don’t reply to this email”? They might trick you by threatening that your security has been compromised.

  • Attackers use the names and logos of well-known web sites to deceive you. The graphics and the web addresses used in the email are strikingly similar to the legitimate ones, but Smart Generator Hack v4.1 crack serial keygen lead you to phony sites.


Not all phishing is done via email or web sites. Vishing (voice phishing) involves calls to victims using fake identity fooling you into considering the call to be from a trusted organisation. They may claim to be from a bank asking you to dial a number (provided by VoIP service and owned by attacker) and enter your account details. Once you do that, Smart Generator Hack v4.1 crack serial keygen, your account security is compromised. Treat all unsolicited phone calls with skepticism and never provide any personal information. Many banks have issued preemptive warnings informing their users of phishing scams and the do’s and don’ts regarding your account information. Those of you reading Digit for long enough will remember that we successfully phished hundreds of our readers by reporting a way to hack other people’s gmail accounts by sending an email to a made up account with your own username and password… and we did that years ago in a story aboutyes, you guessed it, phishing!

6. Email bombing and spamming

Email bombing is characterised by an abuser sending huge volumes of email to a target address resulting in victim’s email account or mail servers crashing. The message is meaningless and excessively long in order to consume network resources. If multiple accounts of a mail server are targeted, it may have a denial-of-service impact. Such mail arriving frequently in your inbox can be easily detected by spam filters. Email bombing is commonly carried out using botnets (private internet connected computers whose security has been compromised by malware and under the attacker’s control) as a DDoS attack.

This type of attack is more difficult to control due to multiple source addresses and the bots which are programmed to send different messages to defeat spam filters, Smart Generator Hack v4.1 crack serial keygen. “Spamming” is a variant of email bombing. Here unsolicited bulk messages are sent to a large number of users, indiscriminately. Opening links given in spam mails may lead you to phishing web sites hosting malware. Spam mail may also have infected files as attachments. Email spamming worsens when the recipient replies to the email causing all the original addressees to receive the reply. Spammers collect email addresses from customer lists, newsgroups, chat-rooms, web sites and viruses which harvest users’ address books, Smart Generator Hack v4.1 crack serial keygen, and sell them to other spammers as well. A large amount of spam is sent to invalid email addresses.

Email filters cleaning out spam mail

Sending spam violates the acceptable use policy (AUP) of almost all internet service providers. If your system suddenly becomes sluggish (email loads slowly or doesn’t appear to be sent or received), the reason may be that your mailer is processing a large number of messages. Unfortunately, at this time, there’s no way to completely prevent email bombing and spam mails as it’s impossible to predict the origin of the next attack. However, what you can do is identify the source of the spam mails and have your router configured to block any incoming packets from that address.

7, Smart Generator Hack v4.1 crack serial keygen. Web jacking

Web jacking derives its name from “hijacking&rdquo. Here, the hacker takes control of a web site fraudulently. He may change the content of the original site or even redirect the user to another fake similar looking page controlled by him. The owner of the web site has no more control and the attacker may use the web site for his own selfish interests. Cases have been reported Smart Generator Hack v4.1 crack serial keygen the attacker has asked for ransom, and even posted obscene material on the site.

The web jacking method attack may be used to create a clone of the web site, and present the victim with the new link saying that the site has moved. Unlike usual phishing methods, when you hover your cursor over the link provided, the URL presented will be the original one, and not the attacker’s site. But when you click on the new link, it opens and is quickly replaced with the malicious web server. The name on the address bar will be slightly different from the original website that can trick the user into thinking it’s a legitimate site. For example, “gmail” may direct you to “gmai1&rdquo. Notice the one in place of ‘L&rsquo. It can be easily overlooked.

Obviously not, but still enough people click


Web jacking can also be done by sending a counterfeit message to the registrar controlling the domain name registration, under a false identity asking him to connect a domain name to the webjacker’s IP address, thus sending unsuspecting consumers who enter that particular domain name to a website controlled by the webjacker. The purpose of this attack is to try to harvest the credentials, usernames, passwords and account numbers of users by using a fake web page with a valid link which opens when the user is redirected to it after opening the legitimate site.

8. Cyber stalking

Cyber stalking is a new form of internet crime in our society when a person is pursued or followed online. A cyber stalker doesn’t physically follow his victim; he does it virtually by following his online Smart Generator Hack v4.1 crack serial keygen to harvest information about the stalkee and harass him or her and make threats using verbal intimidation. It’s an invasion of one’s online privacy.

Cyber stalking uses the internet or any other electronic means and is different from offline stalking, Smart Generator Hack v4.1 crack serial keygen, but is usually accompanied by it. Most victims of this crime are women who are stalked by men and children who are stalked by adult predators and pedophiles. Cyber stalkers thrive on inexperienced web users who are not well aware of netiquette and the rules of internet safety. A cyber stalker may be a stranger, but could just as easily be someone you know.


Cyber stalkers harass their victims via email, chat rooms, web sites, discussion forums and open publishing web sites (e.g. blogs). The availability of free email / web site space and the anonymity provided by chat rooms and Smart Generator Hack v4.1 crack serial keygen has contributed to the increase of cyber stalking incidents. Everyone has an online presence nowadays, and it’s really easy to do a Google search and get one’s Smart Generator Hack v4.1 crack serial keygen, alias, contact number and address, contributing to the menace that is cyber stalking. As the internet is increasingly becoming Avid Archives integral part of our personal and professional lives, stalkers can take advantage of the ease of communications and the availability of personal information only a few mouse clicks away. In addition, the anonymous and non-confrontational nature of internet communications further tosses away any disincentives in the way of cyber stalking. Cyber stalking is done in two primary ways:


  • Internet Stalking: Here the stalker harasses the victim via the internet. Unsolicited email is the most common way of threatening someone, and the stalker may even send obscene content and viruses by email. However, Smart Generator Hack v4.1 crack serial keygen and unsolicited telemarketing email alone do not constitute cyber stalking. But if email is sent repeatedly in an attempt to intimidate the recipient, they may be considered as stalking, Smart Generator Hack v4.1 crack serial keygen. Internet stalking is not limited to email; stalkers can more comprehensively use the internet to harass the victims. Any other cyber-crime that we’ve already read about, if done with an intention to threaten, harass, or slander the victim may amount to cyber stalking.


  • Computer Stalking: The more technologically advanced stalkers apply their computer skills to assist them with the crime. They gain unauthorised control of the victim’s computer by exploiting the working of the internet and the Windows operating system. Though this is usually done by proficient and computer savvy stalkers, instructions on how to accomplish this are easily available on the internet.


Cyber stalking has now spread its wings to social networking. With the increased use of social media such as Facebook, Twitter, Flickr and YouTube, your profile, photos, and status updates are up for the world to see. Your online presence provides enough information for you to become a potential victim of stalking without even being aware of the risk. With the “check-ins”, the “life-events”, apps which access your personal information and the need to put up just about everything that you’re doing and where you’re doing it, one doesn’t really leave anything for the stalkers to figure out for themselves. Social networking technology provides a social and collaborative platform for internet users to interact, express their thoughts and share almost everything about their lives. Though it promotes socialisation amongst people, along the way it contributes to the rise of internet violations.

9. Data diddling

Data Diddling is unauthorised altering of data before or during entry into a computer system, and then changing it back after processing is done. Using this technique, the attacker may modify the expected output and is difficult to track. In other words, the original information to be entered is changed, either by a person typing in the data, a virus that’s programmed to change the data, the programmer of the database or application, or anyone else involved in the process of creating, Smart Generator Hack v4.1 crack serial keygen, recording, encoding, Smart Generator Hack v4.1 crack serial keygen, examining, checking, converting or transmitting data.

This is one of the simplest methods of committing a computer-related crime, because even a computer amateur can do it. Despite this being an effortless task, it can have detrimental effects. For example, a person responsible for accounting may change data about themselves or a friend or relative showing that they’re paid in full. By altering or failing to enter the information, they’re able to steal from the enterprise. Other examples include forging or counterfeiting documents and exchanging valid computer tapes or cards with prepared replacements. Electricity boards in India have been victims of data diddling by computer criminals when private parties were computerizing their systems.

10. Identity Theft and Credit Card Fraud

Identity theft occurs when someone steals your identity and pretends to be you to access resources such as credit cards, bank accounts and other benefits in your name. The imposter may also use your identity Smart Generator Hack v4.1 crack serial keygen commit other crimes. “Credit card fraud” is a wide ranging term for crimes involving identity theft where the criminal uses your credit card to fund his transactions. Credit card fraud is identity theft in its simplest form. The most common case of credit card fraud is your pre-approved card falling into someone else’s hands.

Credit card fraud is the most common way for hackers to steal yoiur money

He can use it to buy anything until you report to the authorities and get your card blocked. The only security measure on credit card purchases is the signature on the receipt but that can very easily be forged. However, in some countries the merchant may even ask you for an ID or a PIN. Some credit card companies have software to estimate the probability of fraud. If an unusually large transaction is made, the issuer may even call you to verify.


Often people forget to collect their copy of the credit card receipt after eating at restaurants or elsewhere when they pay by credit card. These receipts have your credit card number and your signature for anyone to see and use. With only this information, someone can make purchases online or by phone. You won’t notice it until you get your monthly statement, which is why you should carefully study your statements. Make sure the website is trustworthy and secure when shopping online. Some hackers may get a hold of your credit card number by employing phishing techniques. Sometimes a tiny padlock icon appears on the left screen corner of the address bar on your browser which provides a higher level of security for data transmission. If you click on it, Smart Generator Hack v4.1 crack serial keygen, it will also tell you the encryption software it uses.


A more serious concern is the use of your personal information with the help of stolen or fake documents to open accounts (or even worse, using your existing account) to take a loan in your name. These unscrupulous people can collect your personal details from your mailbox or trash can (remember to shred all sensitive documents). Think of all the important details printed on those receipts, pay stubs and other documents. You won’t know a thing until the credit card people track you down and tail you until you clear all your dues. Then for months and months you’ll be fighting to get your credit restored and your name cleared.


With rising cases of credit card fraud, many financial institutions have stepped in with software solutions to monitor your credit and guard your identity. ID theft insurance can be taken to recover lost wages and restore your credit, Smart Generator Hack v4.1 crack serial keygen. But before you spend a fortune on these services, apply the no-cost, common sense measures to avert such a crime.

11. Salami slicing attack

A “salami slicing attack” or “salami fraud” is a technique by which cyber-criminals steal money or resources a bit at a time so that there’s no noticeable difference in overall size. The perpetrator gets away with these little pieces from a large number of resources and thus accumulates a considerable amount over a period of time. The essence of this method is the failure to detect the misappropriation. The most classic approach is “collect-the-roundoff” technique. Most calculations are carried out in a particular currency are rounded off up to the nearest number about half the time and down the rest of the time. If a programmer decides to collect these excess fractions of rupees to a separate account, no net loss to the system seems apparent. This is done by carefully transferring the funds into the perpetrator’s account.

Attackers insert a program into the system to automatically carry out the task. Logic bombs may also be employed by unsatisfied greedy employees who exploit their know-how of the network and/or privileged access to the system. In this technique, the criminal programs the arithmetic calculators to automatically modify data, such as in interest calculations.


Stealing money electronically is the most common use of the salami slicing technique, but it’s not restricted to money laundering. The salami technique can also be applied to gather little bits of information over a period of time to deduce an overall picture of an organisation. This act of distributed information gathering may be against an individual or an organisation. Data can be collected from web sites, advertisements, documents collected from trash cans, and the like, gradually building up a whole database of factual

intelligence about the target.


Since the amount of misappropriation is just below the threshold of perception, we need to be more vigilant. Careful examination of our assets, transactions and every other dealing including sharing of confidential information with others might help reduce the chances of an attack by this method.

12. Software Piracy

Thanks to the internet and torrents, you can find almost any movie, software or song from any origin for free. Internet piracy is an integral part of our lives which knowingly or unknowingly we all contribute to. This way, Smart Generator Hack v4.1 crack serial keygen, the profits of the resource developers are being cut down. It’s not just about using someone else’s intellectual property illegally but also passing it on to your friends further reducing the revenue they deserve.

Piracy is rampant in India, but you knew that

Software piracy is the unauthorised use and distribution of computer software. Software developers work hard to develop these programs, and piracy curbs their ability to generate enoughrevenue to sustain application development. This affects the whole global economy as funds are relayed from other sectors which results in less investment in marketing and research.

The following constitute software piracy:


  • Loading unlicensed software on your PC

  • Using single-licensed software on multiple computers

  • Using a key generator to circumvent copy protection

  • Distributing a licensed or unlicensed (“cracked”) version of software over the internet and offline


“Cloning” is another threat. It happens when someone copies the idea behind your software and writes his own code. Since ideas are not copy protected across borders all the time, this isn’t strictly illegal. A software “crack” is an illegally obtained version of the software which works its way around the encoded copy prevention. Users of pirated software may use a key generator to generate a “serial” number which unlocks an evaluation version of the software, thus defeating the copy protection. Software cracking and using unauthorised keys are illegal acts of copyright infringement.


Using pirated material comes with its own risks. The pirated software may contain Trojans, viruses, worms and other malware, since pirates will often infect software with malicious code. Users of pirated software may be punished by the law for illegal use of copyrighted material. Plus you won’t get the software support that is provided by the developers.

To protect your software from piracy if you’re a developer, you should apply strong safeguards. Some websites sell software with a “digital fingerprint” that helps in tracing back the pirated copies to the source. Another common method is hardware locking. Using this, the software license is locked to a specific computer hardware, Smart Generator Hack v4.1 crack serial keygen, such that it runs only on that computer. Unfortunately, hackers continue to find their way around these measures.

13. Others

So far we’ve discussed the dedicated methods of committing cyber crimes. In a nutshell, any offence committed using electronic means such as net extortion, cyber bullying, child pornography and internet fraud is termed as cyber crime. The internet is a huge breeding ground for pornography, which has often been subject to censorship on grounds of obscenity. But what may be considered obscene in India, might not be considered so in other countries.

Since every country has a different legal stand on this subject matter, pornography is rampant online. However, according to the Indian Constitution, largely, pornography falls under the category of obscenity and is punishable by law. Child pornography is a serious offence, and can attract the harshest punishments provided for by law.  Pedophiles lurk in chat rooms to lure children. The internet allows long-term victimisation of such children, because the pictures once put up, spread like wild-fire, Smart Generator Hack v4.1 crack serial keygen, and may never get taken down completely. Internet crimes against children are a matter of grave concern, and are being addressed by the authorities, but this problem has no easy solution.


Источник: []

An Overview of Cryptography


Does increased security provide comfort to paranoid people? Or does security provide some very basic protections that we are naive to believe that we don't need? During this time when the Internet provides essential communication between literally billions of people and is Smart Generator Hack v4.1 crack serial keygen as a tool for commerce, social interaction, and the exchange of an increasing amount of personal information, security has become a tremendously important issue for every user to deal with.

There are many aspects to security and many applications, ranging from secure commerce and payments to private communications and protecting health care information. One essential aspect for secure communications is that of cryptography. But it is important to note that while cryptography is necessary for secure communications, it is not by itself sufficient. The reader is advised, then, that the topics covered here only describe the first of many steps necessary Windows 2003 Server 32 Bit crack serial keygen better security in any number of situations.

This paper has two major purposes. The first is to define some of the terms and concepts behind basic cryptographic methods, and to offer a way to compare the myriad cryptographic schemes in use today. The second is to provide some real examples of cryptography in use today. (See Section A.4 for some additional commentary on this.)

DISCLAIMER: Several companies, products, and services are mentioned in this tutorial. Such mention is for example purposes only and, unless explicitly stated otherwise, Smart Generator Hack v4.1 crack serial keygen, should not be taken as a recommendation or endorsement by the author.


Cryptography — the science of secret writing — is an ancient art; the first documented use of cryptography in writing dates back to circa 1900 B.C. when an Egyptian scribe used non-standard hieroglyphs in an inscription. Some experts argue that cryptography appeared spontaneously sometime after writing was invented, with applications ranging from diplomatic missives Smart Generator Hack v4.1 crack serial keygen war-time battle plans. It is no surprise, then, that new forms of cryptography came soon after the widespread development of computer communications. In data and telecommunications, cryptography is necessary when communicating over any untrusted medium, which includes just about any network, particularly the Internet.

There are five primary functions of cryptography:

  1. Privacy/confidentiality: Ensuring that no one can read the message except the intended receiver.
  2. Authentication: Smart Generator Hack v4.1 crack serial keygen process of proving one's identity.
  3. Integrity: Assuring the receiver that the received message has not been altered in any way from the original.
  4. Non-repudiation: A mechanism to prove that the sender really sent this message.
  5. Key exchange: The method by which crypto keys are shared between sender and receiver.

In cryptography, we start with the unencrypted data, referred to as plaintext. Plaintext is encrypted into ciphertext, which will in turn (usually) be decrypted back into usable plaintext. The encryption and decryption is based upon the Smart Generator Hack v4.1 crack serial keygen of cryptography scheme being employed and some form of key. For those who like formulas, this process is sometimes written as:

C = Ek(P)
P = Dk(C)

Smart Generator Hack v4.1 crack serial keygen where P = plaintext, C = ciphertext, E = the encryption method, D = the decryption method, and k = the key.

Given this, there are other functions that might be supported by crypto and other terms that one might hear:

  • Forward Secrecy (aka Perfect Forward Secrecy): This feature protects past encrypted sessions from compromise even if the server holding the messages is compromised. This is accomplished by creating a different key for every session so that compromise of a single key does not threaten the entirely of the communications.
  • Perfect Security: A system that is unbreakable and where the ciphertext conveys no information about the plaintext or the key. To achieve perfect security, the key has to be at least as long as the plaintext, making analysis and even brute-force attacks impossible. One-time pads are an example of such a system.
  • Deniable Authentication (aka Message Repudiation): A method whereby participants Smart Generator Hack v4.1 crack serial keygen an exchange of messages can be assured in the authenticity of the messages Smart Generator Hack v4.1 crack serial keygen in such a way that senders can later plausibly deny their participation to a third-party.

In many of the descriptions below, Smart Generator Hack v4.1 crack serial keygen, two communicating parties will be referred to as Alice and Bob; this is the common nomenclature in the crypto field and literature to make it easier to identify the communicating parties. If there is a third and fourth party to the communication, they will be referred to as Carol and Dave, respectively. A malicious party is referred to as Mallory, Smart Generator Hack v4.1 crack serial keygen, an eavesdropper as Eve, and a trusted third party as Trent.

Finally, cryptography is most closely associated with the development and creation of the mathematical algorithms used to encrypt and decrypt messages, whereas cryptanalysis is the science of analyzing and breaking encryption schemes. Cryptology is the umbrella term referring to the broad study of secret writing, and encompasses both cryptography and cryptanalysis.


There are several ways of classifying cryptographic algorithms. For purposes of this paper, they will be categorized based on the number of keys that are employed for encryption and decryption, and further defined by their application and use. The three types of algorithms that will be discussed are (Figure 1):

  • Secret Key Cryptography (SKC): Uses a single key for both encryption and decryption; also called symmetric encryption. Primarily used for privacy and confidentiality.
  • Public Key Cryptography (PKC): Uses one key for encryption and another for decryption; also called asymmetric encryption. Primarily used for authentication, non-repudiation, and key exchange.
  • Hash Functions: Uses a mathematical transformation to irreversibly "encrypt" information, providing a digital fingerprint. Primarily used for message integrity.

FIGURE 1: Three types of cryptography: secret key, public key, and hash function.

3.1. Secret Key Cryptography

Secret key cryptography methods employ a single key for both encryption and decryption. As shown in Figure 1A, the sender uses the key to encrypt the plaintext and sends the ciphertext to the receiver. The receiver applies the same key to decrypt the message and recover the plaintext. Because a single key is used for both functions, secret key cryptography is also called symmetric encryption.

With this form of cryptography, it is obvious that the key must be known to both the sender and the receiver; that, in fact, is the secret. The biggest difficulty with this approach, of course, is the distribution of the key (more on that later in the discussion of public key cryptography).

Secret key cryptography schemes are generally categorized as being either stream ciphers or block ciphers.

A) Self-synchronizing stream cipher. (From Schneier, 1996, Figure 9.8)

B) Synchronous stream cipher, Smart Generator Hack v4.1 crack serial keygen. (From Schneier, 1996, Figure 9.6)

FIGURE 2: Types of stream ciphers.

Stream ciphers operate on a single bit (byte or computer word) at a time and implement some form of feedback mechanism so that the key is constantly changing. Stream ciphers come in several flavors but two are worth mentioning here (Figure 2). Self-synchronizing stream ciphers calculate each bit in the keystream as a function of the previous n bits in the keystream. It is termed "self-synchronizing" because the decryption process can stay synchronized with the encryption process merely by knowing how far into the n-bit keystream it is. One problem is error propagation; a garbled bit in transmission will result in n garbled bits at the receiving side. Synchronous stream ciphers generate the keystream in a fashion independent of the message stream but by using the same keystream generation function at sender and receiver. While stream ciphers do not propagate transmission errors, they are, by their nature, periodic so that the keystream will eventually repeat.

FIGURE 3: Feistel cipher. (Source: Wikimedia Commons)

A block cipher is so-called because the scheme encrypts one fixed-size block of data at a time. In a block cipher, a given plaintext block will always encrypt to the same ciphertext when using the same key (i.e., it is deterministic) whereas the same plaintext will encrypt to different ciphertext in a stream cipher. The most common construct for block encryption algorithms is the Feistel cipher, named for cryptographer Horst Feistel (IBM). As shown in Figure 3, a Feistel cipher combines elements of substitution, permutation (transposition), and key expansion; these features create a large amount of "confusion and diffusion" (per Claude Shannon) in the cipher. One advantage of the Feistel design is that the encryption and decryption stages are similar, sometimes identical, requiring only a reversal of the key operation, thus dramatically reducing the size of the code or circuitry necessary to implement the cipher in software or hardware, respectively. One of Feistel's early papers describing this operation is "Cryptography and Computer Privacy" (Scientific American, May 1973, 228(5), 15-23).

Block ciphers can operate in one of several modes; the following are the most important:

  • Electronic Codebook (ECB) mode is the simplest, most obvious application: the secret key is used to encrypt the plaintext block to form a ciphertext block. Two identical plaintext blocks, then, will always generate the same ciphertext block. ECB is susceptible to a variety of brute-force attacks (because of the fact that the same plaintext block will always encrypt to the same ciphertext), as well as deletion and insertion attacks. In addition, a single bit error in the transmission of the ciphertext results in an error in the entire block of decrypted plaintext.
  • Cipher Block Chaining (CBC) mode adds a feedback mechanism to the encryption scheme; the plaintext is exclusively-ORed (XORed) with the previous ciphertext block prior to encryption so that two identical plaintext blocks will encrypt differently. While CBC protects against many brute-force, deletion, and insertion attacks, a single bit error in the ciphertext yields an entire block error in the decrypted plaintext block and a bit error in the next decrypted plaintext block.
  • Cipher Feedback (CFB) mode is a block cipher implementation as a self-synchronizing stream cipher. CFB mode allows data to be encrypted in units smaller than the block size, which might be useful in some applications such as encrypting interactive terminal input. If we were using one-byte CFB mode, for example, each incoming character is placed into a shift register the same size as the block, encrypted, and the block transmitted. At the receiving side, the ciphertext is decrypted and the extra bits in the block (i.e., everything above and beyond the one byte) are discarded. CFB mode generates a keystream based upon the previous ciphertext (the initial key comes from an Initialization Vector [IV]). In this mode, a single bit error in the ciphertext affects both this block and the following one.
  • Output Feedback (OFB) mode is a block cipher implementation conceptually similar to a synchronous stream cipher. OFB prevents the same plaintext block from generating the same ciphertext block by using an internal feedback mechanism that generates the keystream independently of both the plaintext and ciphertext bitstreams. In OFB, a single bit error in ciphertext yields a single bit error in the decrypted plaintext.
  • Counter (CTR) mode is a relatively modern addition to block ciphers. Like CFB and OFB, CTR mode operates on the blocks as in a stream cipher; like ECB, CTR mode operates on the blocks independently, Smart Generator Hack v4.1 crack serial keygen. Unlike ECB, however, CTR uses different key inputs to different blocks so that two identical blocks of plaintext will not result in the same ciphertext. Finally, each block of ciphertext has specific location within the encrypted message. CTR mode, Smart Generator Hack v4.1 crack serial keygen, then, allows blocks to be processed in parallel — thus offering performance advantages when parallel processing and multiple processors are available — but is not susceptible to ECB's brute-force, deletion, and insertion attacks.

A good overview of these different modes can be found at CRYPTO-IT.

Secret key cryptography algorithms in use today — or, at least, important today even if not in use — include:

  • Data Encryption Standard (DES): One of the most well-known and well-studied SKC schemes, DES was designed by IBM in the 1970s and adopted by the National Bureau of Standards (NBS) [now the National Institute of Standards and Technology (NIST)] in 1977 for commercial and unclassified government applications. DES is a Feistel block-cipher employing a 56-bit key that operates on 64-bit blocks. DES has a complex set of rules and transformations that were designed specifically to yield fast hardware implementations and slow software implementations, although this latter point is not significant today since the speed of computer processors is several orders of magnitude faster today than even twenty years ago. DES was based somewhat on an earlier cipher from Feistel called Lucifer which, some sources report, had a 112-bit key. This was rejected, partially in order to fit the algorithm onto a single chip and partially because of the National Security Agency (NSA), Smart Generator Hack v4.1 crack serial keygen. The NSA also proposed a number of tweaks to DES that many thought were introduced in order to weaken the cipher; analysis in the 1990s, however, showed that the NSA suggestions actually strengthened DES, including the removal of a mathematical back door by a change to the design of the S-box (see "The Legacy of DES" by Bruce Schneier [2004]). In April 2021, the NSA declassified a fascinating historical paper titled "NSA Comes Out of the Closet: The Debate over Public Cryptography in the Inman Era" that appeared in Cryptologic Quarterly, Spring 1996.

    DES was defined in American National Standard X3.92 and three Federal Information Processing Standards (FIPS), all withdrawn in 2005:

    • FIPS PUB 46-3: DES (Archived file)
    • FIPS PUB 74: Guidelines for Implementing and Using the NBS Data Encryption Standard
    • FIPS PUB 81: DES Modes of Operation

    Information about vulnerabilities of DES can be obtained from the Electronic Frontier Foundation.

    Two important variants that strengthen DES are:

    • Triple-DES (3DES): A variant of DES that employs up to three 56-bit keys and makes three encryption/decryption passes over the block; 3DES is also described in FIPS PUB 46-3 and was an interim replacement to DES in the late-1990s and early-2000s.

    • DESX: A variant devised by Ron Rivest. By combining 64 additional key bits to the plaintext prior to encryption, effectively increases the keylength to 120 bits.

    More detail about DES, 3DES, and DESX can be found below in Section 5.4.

  • Advanced Encryption Standard (AES): In 1997, NIST initiated a very public, Smart Generator Hack v4.1 crack serial keygen, 4-1/2 year process to develop a new secure cryptosystem for U.S. government applications (as opposed to the very closed process in the adoption of DES 25 years earlier). The result, the Advanced Encryption Standard, became the official successor to DES in December 2001, Smart Generator Hack v4.1 crack serial keygen. AES uses an SKC scheme called Rijndael, a block cipher designed by Belgian cryptographers Joan Daemen and Vincent Rijmen. The algorithm can use a variable block length and key length; the latest specification allowed any combination of keys lengths of 128, 192, or 256 bits and blocks of length 128, 192, or 256 bits. NIST initially selected Rijndael in October 2000 and formal adoption as the AES standard came in December 2001. FIPS PUB 197 describes a 128-bit block cipher employing a 128- 192- or 256-bit key. AES is also part of the NESSIE approved suite of protocols. (See also the entries for CRYPTEC and NESSIE Projects in Table 3.)

    The AES process and Rijndael algorithm are described in more detail below in Section 5.9.

  • CAST-128/256: CAST-128 (aka CAST5), described in Request for Comments (RFC) 2144, is a DES-like substitution-permutation crypto algorithm, employing a 128-bit key operating on a 64-bit block. CAST-256 (aka CAST6), described in RFC 2612, is an extension of CAST-128, using a 128-bit block size and a variable length (128, 160, 192, 224, or 256 bit) key. CAST is named for its developers, Carlisle Adams and Stafford Tavares, and is available internationally. CAST-256 was one of the Round 1 algorithms in the AES process.

  • International Data Encryption Algorithm (IDEA): Secret-key cryptosystem written by Xuejia Lai and James Massey, Smart Generator Hack v4.1 crack serial keygen, in 1992 and patented by Ascom; a 64-bit SKC block cipher using a 128-bit key.

  • Rivest Ciphers (aka Ron's Code): Named for Ron Rivest, a Smart Generator Hack v4.1 crack serial keygen of SKC algorithms.

    • RC1: Designed on paper but never implemented.

    • RC2: A 64-bit block cipher using variable-sized keys designed to replace DES. It's code has not been made public although many companies have licensed RC2 for use in their products. Described in RFC 2268.

    • RC3: Found to be breakable during development.

    • RC4: A stream cipher using variable-sized keys; it is widely used in commercial cryptography products. An update to RC4, called Spritz (see also this article), was designed by Rivest and Jacob Schuldt. More detail about RC4 (and a little about Spritz) can be found below in Section 5.13.

    • RC5: A block-cipher supporting a variety of block sizes (32, 64, or 128 bits), key sizes, and number of encryption passes over the data. Described in RFC 2040.

    • RC6: A 128-bit block cipher based upon, and an improvement over, RC5; RC6 was one of the AES Round 2 algorithms.

  • Blowfish: A symmetric 64-bit block cipher invented by Bruce Schneier; optimized for 32-bit processors with large data caches, it is significantly faster than DES on a Pentium/PowerPC-class machine. Key lengths can vary from 32 to 448 bits in length. Blowfish, available freely and intended as a substitute for DES or IDEA, is in use in a large number of products.

  • Twofish: A 128-bit block cipher using 128- 192- or 256-bit keys. Designed to be highly secure and highly flexible, well-suited for large microprocessors, 8-bit smart card microprocessors, and dedicated hardware. Designed by a team led by Bruce Schneier and was one of the Round 2 algorithms in the AES process.

  • Threefish: A large block cipher, supporting 256- Smart Generator Hack v4.1 crack serial keygen, 512- and 1024-bit blocks and a key size that matches the block size; by design, the block/key size can grow in increments of 128 bits, Smart Generator Hack v4.1 crack serial keygen. Threefish only uses XOR operations, addition, and rotations of 64-bit words; the design philosophy is that an algorithm employing many computationally simple rounds is more secure than one employing highly complex — albeit fewer — rounds. The specification for Threefish is part of the Skein Hash Function Family documentation.

  • Anubis: Anubis is a block cipher, co-designed by Vincent Rijmen who was one of the designers of Rijndael. Anubis is a block cipher, performing substitution-permutation operations on 128-bit blocks and employing keys of length 128 to 3200 God Of War Crack With License Key Archives - proapkcrack (in 32-bit increments). Anubis works very much like Rijndael. Although submitted to the NESSIE project, it did not make the final cut for inclusion.

  • ARIA: A 128-bit block cipher employing 128- 192- and 256-bit keys to encrypt 128-bit blocks in 12, 14, and 16 rounds, depending on the key size. Developed by large group of researchers from academic institutions, research institutes, and federal agencies in South Korea in 2003, Smart Generator Hack v4.1 crack serial keygen, and subsequently named a national standard. Described in RFC 5794.

  • Camellia: A secret-key, block-cipher crypto algorithm developed jointly by Nippon Telegraph and Telephone (NTT) Corp. and Mitsubishi Electric Corporation (MEC) in 2000. Camellia has some characteristics in common with AES: a 128-bit block size, support for 128- 192- and 256-bit key lengths, and suitability for both software and hardware implementations on common 32-bit processors as well as 8-bit processors (e.g., smart cards, cryptographic hardware, and embedded systems). Also described in RFC 3713. Camellia's application in IPsec is described in RFC 4312 and application in OpenPGP in RFC 5581. Camellia is part of the NESSIE suite of protocols.

  • CLEFIA: Described in RFC 6114, CLEFIA is a 128-bit block cipher employing key lengths of 128, 192, and 256 bits (which is compatible with AES). The CLEFIA algorithm was first published in 2007 by Sony Corporation. CLEFIA is one of the new-generation lightweight blockcipher algorithms designed after AES, offering high performance in software and hardware as well as a lightweight implementation in hardware.

  • FFX-A2 and FFX-A10: FFX (Format-preserving, Feistel-based encryption) is a type of Format Preserving Encryption (FPE) scheme that is designed so that the ciphertext has the same format as the plaintext. FPE schemes are used for such purposes as encrypting social security numbers, credit card numbers, limited size protocol traffic, etc.; this means that an encrypted social security number, for example, would still be a nine-digit string. FFX can theoretically encrypt strings of arbitrary length, although it is intended for message sizes smaller than that of AES-128 (2128 points). The FFX version 1.1 specification describes FFX-A2 and FFX-A10, which are intended for 8-128 bit binary strings or 4-36 digit decimal strings.

  • GSM (Global System for Mobile Communications, originally Groupe Spécial Mobile) encryption: GSM mobile phone systems use several stream ciphers for over-the-air communication privacy. A5/1 was developed in 1987 for use in Europe and the U.S. A5/2, developed in 1989, is a weaker algorithm and intended for use outside of Europe and the U.S. Significant flaws were found in both ciphers after the "secret" specifications were leaked in 1994, however, and A5/2 has been withdrawn from use. The newest version, A5/3, employs the KASUMI block cipher. NOTE: Unfortunately, although A5/1 has been repeatedly "broken" (e.g., see "Secret code protecting cellphone calls set loose" [2009] and "Cellphone snooping now easier and cheaper than ever" [2011]), this encryption scheme remains in widespread use, even in 3G and 4G mobile phone networks. Use of this scheme is reportedly Smart Generator Hack v4.1 crack serial keygen of the reasons that the National Security Agency (NSA) can easily decode voice and data calls over mobile phone networks.

  • GPRS (General Packet Radio Service) encryption: GSM mobile phone systems use GPRS for data applications, and GPRS uses a number of encryption methods, offering different levels of data protection. GEA/0 offers no encryption at all. GEA/1 and GEA/2 are proprietary stream ciphers, employing a 64-bit key and a 96-bit or 128-bit state, respectively. GEA/1 and GEA/2 are most widely used by network service providers today although both have been reportedly broken. GEA/3 is a 128-bit block cipher employing a 64-bit key that is used by some carriers; GEA/4 driver booster 8 pro key a 128-bit clock cipher with a 128-bit key, but is not yet deployed.

  • KASUMI: A block cipher using a 128-bit key that is part of the Third-Generation Partnership Project (3gpp), formerly known as the Universal Mobile Telecommunications System (UMTS). KASUMI is the intended confidentiality and integrity algorithm for both message content and signaling data for emerging mobile communications systems.

  • KCipher-2: Described in RFC 7008, KCipher-2 is a stream cipher with a 128-bit key and a 128-bit initialization vector. Using simple arithmetic operations, the algorithms offers fast encryption and decryption by use of efficient implementations. KCipher-2 has been used for industrial applications, especially for mobile health monitoring and diagnostic services in Japan.

  • KHAZAD:KHAZAD is a so-called legacy block cipher, operating on 64-bit blocks à la older block ciphers such as DES and IDEA. KHAZAD uses eight rounds of substitution and permutation, with a 128-bit key.

  • KLEIN: Designed in 2011, KLEIN is a lightweight, 64-bit block cipher supporting 64- 80- and 96-bit keys. KLEIN is designed for highly resource constrained devices such as wireless sensors and RFID tags.

  • Light Encryption Device (LED): Designed in 2011, LED is a lightweight, 64-bit block cipher supporting 64- and 128-bit keys. LED is designed for RFID tags, sensor networks, and other applications with devices constrained by memory or compute power.

  • MARS:MARS is a block cipher developed by IBM and was one of the five finalists in the AES development process. MARS employs 128-bit blocks and a variable key length from 128 to 448 bits. The MARS document stresses the ability of the algorithm's design for high speed, high security, and the ability to efficiently and effectively implement the scheme on a wide range of computing devices.

  • MISTY1: Developed at Mitsubishi Electric Corp., a block cipher using a 128-bit key and 64-bit blocks, and a variable number of rounds. Designed for hardware and software implementations, and is resistant to differential and linear cryptanalysis. Described in RFC 2994, MISTY1 is part of the NESSIE suite.

  • Salsa and ChaCha: Salsa20 is a stream cipher proposed for the eSTREAM project by Daniel Bernstein. Salsa20 uses a pseudorandom function based on 32-bit (whole word) addition, bitwise addition (XOR), Smart Generator Hack v4.1 crack serial keygen, and rotation operations, aka add-rotate-xor (ARX) operations. Salsa20 uses a 256-bit key although a 128-bit key variant also exists. In 2008, Bernstein published ChaCha, a new family of ciphers related to Salsa20. ChaCha20, originally defined in RFC 7539 (now obsoleted), is employed (with the Poly1305 authenticator) in Internet Engineering Task Force (IETF) protocols, most notably for IPsec and Internet Key Exchange (IKE), per RFC 7634, and Transaction Layer Security (TLS), per RFC 7905. In 2014, Google adopted ChaCha20/Poly1305 for use in OpenSSL, and they are also a part of OpenSSH. RFC 8439 replaces RFC 7539, and provides an implementation guide for both the ChaCha20 cipher and Poly1305 message authentication code, as well as the combined CHACHA20-POLY1305 Authenticated-Encryption with Associated-Data (AEAD) algorithm.

  • Secure and Fast Encryption Routine (SAFER): A series of block ciphers designed by James Massey for implementation in software and employing Smart Generator Hack v4.1 crack serial keygen 64-bit block. SAFER K-64, published in 1993, used a 64-bit key and SAFER K-128, published in 1994, employed a 128-bit key. After weaknesses were found, new versions were released called SAFER SK-40, SK-64, and SK-128, using 40- 64- and 128-bit keys, respectively. SAFER+ (1998) used Smart Generator Hack v4.1 crack serial keygen 128-bit block and was an unsuccessful candidate for the AES project; SAFER++ (2000) was submitted to the NESSIE project.

  • SEED: A block cipher using 128-bit blocks and 128-bit keys. Developed by the Korea Information Smart Generator Hack v4.1 crack serial keygen Agency (KISA) and adopted as a national standard encryption algorithm in South Korea. Also described in RFC 4269.

  • Serpent:Serpent is another of the AES finalist algorithms. Serpent supports 128- 192- or 256-bit keys and a block size of 128 bits, and is a 32-round substitution–permutation network operating on a block of four 32-bit words. The Serpent developers opted for a high security margin in the design of the Smart Generator Hack v4.1 crack serial keygen they determined that 16 rounds would be sufficient against known attacks but require 32 rounds in an attempt to future-proof the algorithm.

  • SHACAL: SHACAL is a pair of block ciphers based upon the Secure Hash Algorithm (SHA) and the fact that SHA is, at heart, a compression algorithm. As a hash function, SHA repeatedly calls on a compression scheme to alter the state of the data blocks. While SHA (like other hash functions) is irreversible, the compression function can be used for encryption by maintaining appropriate state information. SHACAL-1 is based upon SHA-1 and uses a 160-bit block size while SHACAL-2 is based upon SHA-256 and employs a 256-bit block size; both support key sizes from 128 to 512 bits. SHACAL-2 is one of the NESSIE block ciphers.

  • Simon and Speck: Simon and Speck are a pair of lightweight block ciphers proposed by the NSA in 2013, designed for highly constrained software or hardware environments, Smart Generator Hack v4.1 crack serial keygen. (E.g., per the specification, AES requires 2400 gate equivalents and these ciphers require less than 2000.) While both cipher families perform well in both hardware and software, Simon has been optimized for high performance on hardware devices and Speck for performance in software. Both are Feistel ciphers and support ten combinations of block and key size:

  • Skipjack: SKC scheme proposed, along with the Clipper chip, as part of the never-implemented Capstone project. Although the details of the algorithm were never made public, Skipjack was a block cipher using an 80-bit key and 32 iteration cycles per 64-bit block. Capstone, proposed by NIST and the NSA as a standard for public and government use, met with great resistance by the crypto community largely because the design of Skipjack was classified (coupled with the key escrow requirement of the Clipper chip).

  • SM4: Formerly called SMS4, SM4 is a 128-bit block cipher using 128-bit keys and 32 rounds to process a block. Declassified in 2006, SM4 is used in the Chinese National Standard for Wireless Local Area Network (LAN) Authentication and Privacy Infrastructure (WAPI). SM4 had been a proposed cipher for the Institute of Electrical and Electronics Engineers (IEEE) 802.11i standard on security mechanisms for wireless LANs, but has yet to be accepted by the IEEE or International Organization for Standardization (ISO). SM4 is described in SMS4 Encryption Algorithm for Wireless Networks (translated by Whitfield Diffie and George Ledin, 2008) and at the SM4 (cipher) page. SM4 is issued by the Chinese State Cryptographic Authority as GM/T 0002-2012: SM4 (2012).

  • Tiny Encryption Algorithm (TEA): A family of block ciphers developed by Roger Needham and David Wheeler. TEA was originally developed in 1994, and employed a 128-bit key, 64-bit block, Smart Generator Hack v4.1 crack serial keygen, and 64 rounds of operation. To correct certain weaknesses in TEA, eXtended TEA (XTEA), aka Block TEA, was released in 1997. To correct weaknesses in XTEA and add versatility, Corrected Block TEA (XXTEA) was published in 1998. XXTEA also uses a 128-bit key, but block size can be any multiple of 32-bit words (with a minimum block size of 64 bits, or two words) and the number of rounds is a function of the block size (~52+6*words), as shown in Table 1.

  • Block Size
    Key Size
    Word Size
    Key Words
  • TWINE: Designed by engineers at NEC in 2011, TWINE is a lightweight, 64-bit block cipher supporting 80- and 128-bit keys. TWINE's design goals included maintaining a small footprint in a hardware implementation (i.e., fewer than 2,000 gate equivalents) and small memory consumption in a software implementation.

Although not an SKC scheme, check out Section 5.17 about Shamir's Secret Sharing (SSS).

There are several other references that describe interesting algorithms and even SKC codes dating back decades. Two that leap to mind are the Crypto Museum's Crypto List and John J.G. Savard's (albeit old) A Cryptographic Compendium page.

3.2. Public Key Cryptography

Public key cryptography has been said to be Smart Generator Hack v4.1 crack serial keygen most significant new development in cryptography in the last 300-400 years, Smart Generator Hack v4.1 crack serial keygen. Modern PKC was first described publicly by Stanford University professor Martin Hellman and graduate student Whitfield Diffie in 1976, Smart Generator Hack v4.1 crack serial keygen. Their paper described a two-key crypto system in JitBit Macro Recorder 2.12 crack serial keygen two parties could engage in a secure communication over a non-secure communications channel without having to share a secret key.

PKC depends upon the existence of so-called one-way functions, or mathematical functions that are easy to compute whereas their inverse function is relatively difficult to compute. Let me give you two simple examples:

  1. Multiplication vs. factorization: Suppose you have two prime numbers, 3 and 7, and you need to calculate the product; it should take almost no time to calculate that value, Smart Generator Hack v4.1 crack serial keygen, which is 21. Now suppose, instead, that you have a number that is a product of two primes, Smart Generator Hack v4.1 crack serial keygen, 21, and you need to determine those prime factors. You will eventually come up with the solution but whereas calculating the product took milliseconds, factoring will take longer. The problem becomes much harder if we start with primes that have, say, 400 digits or so, because the product will have ~800 digits.
  2. Exponentiation vs. logarithms: Suppose you take the number 3 to the 6th power; again, it is relatively easy to calculate 36 = 729. But if you start with the number 729 and need to determine the two integers, x and y so that logx 729 = y, Smart Generator Hack v4.1 crack serial keygen, it will take longer to find the two values.

While the examples above are trivial, they do represent two of the functional pairs that are used with PKC; namely, the ease of multiplication and exponentiation versus the relative difficulty of factoring and calculating logarithms, respectively. The mathematical "trick" in PKC is to find a trap door in the one-way function so that the inverse calculation becomes easy given knowledge of some item of information.

Generic PKC employs two keys that are mathematically related although knowledge of one key does not allow someone to easily determine the other key. One key is used to encrypt the plaintext and the other key is used to decrypt the ciphertext. The important point here is that it does not matter which key is applied first, but that both keys are required for the process to work (Figure 1B). Because a pair of keys are required, this approach is also called asymmetric cryptography.

In PKC, one of the keys is designated the public key and may be advertised as widely as the owner wants. The other key is designated the private key and is never revealed to another party, Smart Generator Hack v4.1 crack serial keygen. It is straight-forward to send messages under this scheme. Suppose Alice wants to send Bob a message. Alice encrypts some information using Bob's public key; Bob decrypts the ciphertext using his private key, Smart Generator Hack v4.1 crack serial keygen. This method could be also used to prove who sent a message; Alice, for example, could encrypt some plaintext with her private key; when Bob decrypts using Alice's public key, he knows that Alice sent the message (authentication) and Alice cannot deny having sent the message (non-repudiation).

Public key cryptography algorithms that are in use today for key exchange or digital signatures include:

  • RSA: The first, and still most common, PKC implementation, named for the three MIT mathematicians who developed it — Ronald Rivest, Adi Shamir, and Leonard Adleman. RSA today is used in hundreds of software products and Smart Generator Hack v4.1 crack serial keygen be used for key exchange, Smart Generator Hack v4.1 crack serial keygen, digital signatures, or encryption of small blocks of data. RSA uses a variable size encryption block and a variable size key. The key-pair is derived from a very large number, n, that is the product of two prime numbers chosen according to special rules; these primes may be 100 or more digits in length each, yielding an n with roughly twice as many digits as the prime factors. The public key information includes n and a derivative of one of the factors of n; an attacker cannot determine the prime factors of n (and, Smart Generator Hack v4.1 crack serial keygen, therefore, the private key) from this information alone and that is what makes the RSA algorithm so secure. (Some descriptions of PKC erroneously state that RSA's safety is due to the difficulty in factoring large prime numbers. In fact, large prime numbers, Smart Generator Hack v4.1 crack serial keygen, like small prime numbers, only have two factors!) The ability for computers to factor large numbers, and therefore attack schemes such as RSA, is rapidly improving and systems today can find the prime factors of numbers with more than 200 digits. Nevertheless, if a large number is created from two prime factors that are roughly the same size, there is no known factorization algorithm that will solve the problem in a reasonable amount of time; a 2005 test to factor a 200-digit number took 1.5 years and over 50 years of compute time. In 2009, Kleinjung et al. reported that factoring a 768-bit (232-digit) RSA-768 modulus utilizing hundreds of systems took two years and they estimated that a 1024-bit RSA modulus would take about a thousand times as long. Even so, they suggested that 1024-bit RSA be phased out by 2013. (See the Wikipedia article on integer factorization.) Regardless, one ableton live 10 suite crack reddit Archives s protection of RSA is that users can easily increase the key size to always stay ahead of the computer processing curve. As an aside, the patent for RSA expired in September 2000 which does not appear to have affected RSA's popularity one way or the other. A detailed example of RSA is presented below in Section 5.3.

  • Diffie-Hellman: After the RSA algorithm was published, Smart Generator Hack v4.1 crack serial keygen and Hellman came up with their own algorithm. Diffie-Hellman is used for secret-key key exchange only, and not for authentication or digital signatures. More detail about Diffie-Hellman can be found below in Section 5.2.

  • Digital Signature Algorithm (DSA): The algorithm specified in NIST's Digital Signature Standard (DSS), provides digital signature capability for the authentication of messages. Described in FIPS PUB 186-4.

  • ElGamal: Designed by Taher Elgamal, ElGamal is a PKC system similar to Diffie-Hellman Smart Generator Hack v4.1 crack serial keygen used for key exchange. ElGamal is used in some later version of Pretty Good Privacy (PGP) as well as GNU Privacy Guard (GPG) and other cryptosystems.

  • Elliptic Curve Cryptography (ECC): A PKC algorithm based upon elliptic curves. ECC can offer levels of security with small keys comparable to RSA and other PKC methods. It was designed for devices with limited compute power and/or memory, such as smartcards and PDAs. More detail about ECC can be found below in Section 5.8. Other references include the Elliptic Curve Cryptography page and the Online ECC Tutorial page, both from Certicom. See also RFC 6090 for a review of fundamental ECC algorithms and The Elliptic Curve Digital Signature Algorithm (ECDSA) for details about the use of ECC for digital signatures.

  • Identity-Based Encryption (IBE): IBE is a novel scheme first proposed by Adi Shamir in 1984. It Smart Generator Hack v4.1 crack serial keygen a PKC-based key authentication system where the public key can be derived from some unique information based upon the user's identity, allowing two users to exchange encrypted messages without having an a priori relationship. In 2001, Dan Boneh (Stanford) and Matt Franklin (U.C., Davis) developed a practical implementation of IBE based on elliptic curves and a mathematical construct called the Weil Pairing. In that year, Clifford Cocks (GCHQ) also described another IBE solution based on quadratic residues in composite groups. RFC 5091: Identity-Based Cryptography Standard (IBCS) #1 describes an implementation of IBE using Boneh-Franklin (BF) and Boneh-Boyen (BB1) Identity-based Encryption. More detail about Identity-Based Encryption can be BloodRayne Betrayal: Fresh Bites Free Download below in Section 5.16.

  • Public Key Cryptography Standards (PKCS): A Smart Generator Hack v4.1 crack serial keygen of interoperable standards and guidelines for public key cryptography, designed by RSA Data Security Inc. (These documents are no longer easily available; all links in this section are from

  • Cramer-Shoup: A public key cryptosystem proposed by R, Smart Generator Hack v4.1 crack serial keygen. Cramer and V. Shoup of IBM in 1998.

  • Key Exchange Algorithm (KEA): A variation on Diffie-Hellman; proposed as the key exchange method for the NIST/NSA Capstone project.

  • LUC: A public key cryptosystem designed by P.J. Smith and based on Lucas sequences. Can be used for encryption and signatures, using integer factoring.

  • McEliece: A public key cryptosystem based on algebraic coding theory.

For additional information on PKC algorithms, see "Public Key Encryption" (Chapter 8) in Handbook of Applied Cryptography, by A. Menezes, P. van Oorschot, and S. Vanstone (CRC Press, 1996).

A digression: Who invented PKC? I tried to be careful in the first paragraph of this section to state that Diffie and Hellman "first described publicly" a PKC scheme. Although I have categorized PKC as a two-key system, that has been merely for convenience; the real criteria for a Smart Generator Hack v4.1 crack serial keygen scheme is that it allows two parties to exchange a secret even though the communication with the shared secret might be overheard. There seems to be no question that Diffie and Hellman were first to Smart Generator Hack v4.1 crack serial keygen their method is described in the classic paper, "New Directions in Cryptography," published in the November 1976 issue of IEEE Transactions on Information Theory (IT-22(6), 644-654). As shown in Section 5.2, Diffie-Hellman uses the idea that finding logarithms is relatively harder than performing exponentiation. And, indeed, it is the precursor to modern PKC which does employ two keys. Rivest, Shamir, and Adleman described an implementation that extended this idea in their paper, "A Method for Obtaining Digital Signatures and Public Key Cryptosystems," published in the February 1978 issue of the Communications of the ACM (CACM), (21(2), 120-126). Their method, of course, is based upon the relative ease of finding the product of two large prime numbers compared to finding the prime factors of a large number.

Diffie and Hellman (and other sources) credit Ralph Merkle with first describing a public Smart Generator Hack v4.1 crack serial keygen distribution system that allows two parties to share a secret, although it was not a two-key system, per se. A Merkle Puzzle works where Alice creates a large number of encrypted keys, sends them all to Bob so that Bob chooses one at random and then lets Alice know which he has selected. An eavesdropper (Eve) will see all of the Smart Generator Hack v4.1 crack serial keygen but can't learn which key Bob has selected (because he has encrypted the response with the chosen 4K Video Downloader 4.18.0 Crack With License Key [Latest]. In this case, Eve's effort to break in is the square of the effort of Bob to choose a key. While this difference may be small it is often sufficient. Merkle apparently took a computer science course at UC Berkeley in 1974 and described his method, but had difficulty making people understand it; frustrated, he dropped the course. Meanwhile, he submitted the paper "Secure Communication Over Insecure Channels," which was published in the CACM in April 1978; Rivest et al.'s paper even makes reference to it. Merkle's method certainly wasn't published first, but he is often credited to have had the idea first.

An interesting question, maybe, but who really knows? For some time, it was a quiet secret that a team at the UK's Government Communications Headquarters (GCHQ) had first developed PKC in the early 1970s. Because of the nature of the work, GCHQ kept the original memos classified. In 1997, however, the GCHQ changed their posture when they realized that there was nothing to gain by continued silence. Documents show that a GCHQ mathematician named James Ellis started research into the key distribution problem in 1969 and that by 1975, James Ellis, Clifford Cocks, and Malcolm Williamson had worked out all of the fundamental details of PKC, yet couldn't talk about their work. (They were, Smart Generator Hack v4.1 crack serial keygen, of course, barred from challenging the RSA patent!) By 1999, Ellis, Cocks, and Williamson began to get their due credit in a break-through article in WIRED Magazine. And the National Security Agency (NSA) claims to have knowledge of this type of algorithm as early as 1966. For some additional insight on who knew what when, see Steve Bellovin's "The Prehistory of Public Key Cryptography."

3.3. Hash Functions

Hash functions, also called message digests and one-way encryption, are algorithms that, in essence, use no key (Figure 1C). Instead, a fixed-length hash value is computed based upon the plaintext that makes it impossible for either the contents or length of the plaintext to be recovered. Hash algorithms are typically used to provide a digital fingerprint of a file's contents, often used to ensure that the file has not been altered by an intruder or virus. Hash functions are also commonly employed by many operating systems to encrypt passwords. Hash functions, then, provide a mechanism to ensure the integrity of a file.

Hash functions are also designed so that small changes in the input produce significant differences in the hash value, for example:

Hash string 1: The quick brown fox jumps over the lazy dog
Hash string 2: The quick brown fox jumps over the lazy dog.

MD5 [hash string 1] = 37c4b87edffc5d198ff5a185cee7ee09
MD5 [hash string 2] = 0d7006cd055e94cf614587e1d2ae0c8e

SHA1 [hash string 1] = be417768b5c3c5c1d9bcb2e7c119196dd76b5570
SHA1 [hash string 2] = 9c04cd6372077e9b11f70ca111c9807dc7137e4b

RIPEMD160 [hash string 1] = ee061f0400729d0095695da9e2c95168326610ff
RIPEMD160 [hash string 2] = 99b90925a0116c302984211dbe25b5343be9059e

Let me reiterate that hashes are one-way encryption. You cannot take a hash and "decrypt" it to find the original string that created it, despite the many web sites that claim or suggest otherwise, Smart Generator Hack v4.1 crack serial keygen, such as CrackStation,, MD5 Online, md5thiscracker, OnlineHashCrack, and RainbowCrack.

Note that these sites search databases and/or use rainbow tables to find a suitable string that produces the hash in question but one can't definitively guarantee what string originally produced the hash. This is an important distinction. Suppose that you want to crack someone's password, where the hash of the password is stored on the server. Indeed, all you then need is a string that produces the correct hash and you're in! However, you cannot prove that you have discovered the user's password, only a "duplicate key."

Hash algorithms in common use today include:

  • Message Digest (MD) algorithms: A series of byte-oriented algorithms that produce a 128-bit hash value from an arbitrary-length message.

    • MD2 (RFC 1319): Designed for systems with limited memory, such as smart cards. (MD2 has been relegated to historical status, per RFC 6149.)

    • MD4 (RFC 1320): Developed by Rivest, similar to MD2 but designed specifically for Smart Generator Hack v4.1 crack serial keygen processing in software. (MD4 has been relegated to historical status, per RFC 6150.)

    • MD5 (RFC 1321): Also developed by Rivest after potential weaknesses were reported in MD4; this scheme is similar to MD4 but is slower because more manipulation is made to the original data. MD5 has been implemented in a large number of products although several weaknesses in the algorithm were demonstrated by German cryptographer Hans Dobbertin in 1996 ("Cryptanalysis of MD5 Compress"). (Updated security considerations for MD5 can be found in RFC 6151.)

  • Secure Hash Algorithm (SHA): Algorithm for NIST's Secure Hash Standard (SHS), described in FIPS PUB 180-4 The status of NIST hash algorithms can be found on their "Policy on Hash Functions" page.

    • SHA-1 produces a 160-bit hash value and was originally published as FIPS PUB 180-1 and RFC 3174. SHA-1 was deprecated by NIST as of the end of 2013 although it is still widely used.

    • SHA-2, originally described in FIPS PUB 180-2 and eventually replaced by FIPS PUB 180-3 (and FIPS PUB 180-4), comprises five algorithms in the SHS: SHA-1 plus SHA-224, SHA-256, SHA-384, and SHA-512 which can produce hash values that are 224, Smart Generator Hack v4.1 crack serial keygen, 256, 384, or 512 bits in length, Smart Generator Hack v4.1 crack serial keygen, respectively. SHA-2 recommends use of SHA-1, SHA-224, and SHA-256 for messages less than 264 bits in length, and employs a 512 bit block size; SHA-384 and SHA-512 are recommended for messages less than 2128 bits in length, and employs a 1,024 bit block size. FIPS PUB 180-4 also introduces the concept of a truncated hash in SHA-512/t, a generic name referring to a hash value based upon the SHA-512 algorithm that has been truncated to t bits; SHA-512/224 and SHA-512/256 are specifically described. SHA-224, -256, -384, and -512 are also described in RFC 4634.

    • SHA-3 is the current SHS algorithm. Although there had not been any successful attacks on SHA-2, NIST decided that having an alternative to SHA-2 using a different algorithm would be prudent. In 2007, they launched a SHA-3 Competition to find that alternative; a list of submissions can be found at The SHA-3 Zoo. In 2012, NIST announced that after reviewing 64 submissions, Smart Generator Hack v4.1 crack serial keygen, the winner was Keccak (pronounced "catch-ack"), a family of hash algorithms based on sponge functions. The NIST version can support hash output sizes of 256 and 512 bits.

  • RIPEMD: A series of message digests that initially came from the RIPE (RACE Integrity Primitives Evaluation) project. RIPEMD-160 was designed by Hans Dobbertin, Antoon Bosselaers, and Bart Preneel, and optimized for 32-bit processors to replace the then-current 128-bit hash functions. Other versions include RIPEMD-256, RIPEMD-320, and RIPEMD-128.

  • eD2k: Named for the EDonkey2000 Network (eD2K), the eD2k hash is a root hash of an MD4 hash list of a given file. A root hash is used on peer-to-peer file transfer networks, where a file is broken into chunks; each chunk has its own MD4 hash associated with it and the server maintains a file that contains the hash list of all of the chunks. The root hash is the hash of the hash list file.

  • HAVAL (HAsh of VAriable Length): Designed by Y. Zheng, J. Pieprzyk and J. Seberry, a hash algorithm with many levels of security. HAVAL can create hash values that are 128, 160, 192, 224, or 256 bits in length. More details can be found in "HAVAL - A Smart Generator Hack v4.1 crack serial keygen hashing algorithm with variable length output" by Zheng, Pieprzyk, and Seberry (AUSCRYPT '92).

  • The Skein Hash Function Family: The Skein Hash Function Family was proposed to NIST in their 2010 hash function competition. Skein is fast due to using just a few simple computational primitives, secure, and very flexible — per the specification, it can be used as a straight-forward hash, MAC, HMAC, digital signature hash, Smart Generator Hack v4.1 crack serial keygen, key derivation mechanism, stream cipher, or pseuo-random number generator. Skein supports internal state sizes of 256, 512 Smart Generator Hack v4.1 crack serial keygen 1024 bits, and arbitrary output lengths.

  • SM3: SM3 is a 256-bit hash function operating on 512-bit input blocks. Part of a Chinese National Standard, SM3 is issued by the Chinese State Cryptographic Authority as GM/T 0004-2012: SM3 cryptographic hash algorithm (2012) and GB/T 32905-2016: Information security techniques—SM3 cryptographic hash algorithm (2016). More information can also be found at the SM3 (hash function) page.

  • Tiger: Designed by Ross Anderson and Eli Biham, Tiger is designed to be secure, run efficiently on 64-bit processors, and easily replace MD4, MD5, SHA and SHA-1 in other applications. Tiger/192 produces a 192-bit output and is compatible with 64-bit architectures; Tiger/128 and Tiger/160 produce a hash of length 128 and 160 bits, respectively, to provide compatibility with the other hash functions mentioned above.

  • Whirlpool: Designed by V. Rijmen (co-inventor of Rijndael) and P.S.L.M. Barreto, Whirlpool is one of two hash functions endorsed by the NESSIE competition (the other being SHA). Whirlpool operates on messages less than 2256 bits in length and produces a message digest of 512 bits. The design of this hash function is very different than that of MD5 and SHA-1, making it immune to the types of attacks that succeeded on those hashes.

Readers might be interested in HashCalc, a Windows-based program that calculates hash values using a dozen algorithms, including MD5, SHA-1 and several variants, RIPEMD-160, and Tiger. Command line utilities that calculate hash values include sha_verify by Dan Mares (Windows; supports MD5, SHA-1, SHA-2) and md5deep (cross-platform; supports MD5, SHA-1, SHA-256, Tiger, and Whirlpool).

A digression on hash collisions. Hash functions are sometimes misunderstood and some sources claim that no two files can have the trapcode suite crack mac Archives hash value. This is in theory, if not in fact, incorrect. Consider a hash function that provides a 128-bit hash value. There are, then, 2128 possible hash values. But there are an infinite number of possible files and ∞ >> 2128. Therefore, there have to be multiple files — in fact, there have to be an infinite number of files! — that have the same 128-bit hash value. (Now, while even this is theoretically correct, it is not true in practice because hash algorithms are designed to work with a limited message size, as mentioned above. For example, SHA-1, SHA-224, and SHA-256 produce hash values that are 160, 224, and 256 bits in length, respectively, and limit the message length to less than 264 bits; SHA-384 and all SHA-256 variants limit the message length to less than 2128 bits. Nevertheless, hopefully you get my point — and, alas, even if you don't, do know that there are multiple files that have the same MD5 or SHA-1 hash values.)

The difficulty is not necessarily in finding two files with the same hash, but in finding a second file that has the same hash value as a given first file. Consider this example. A human head has, generally, no more than ~150,000 hairs. Since there are more than 7 billion people on earth, Smart Generator Hack v4.1 crack serial keygen, we know that there are a lot of people with the same number of hairs on their head. Finding two people with the same number of hairs, Smart Generator Hack v4.1 crack serial keygen, then, would be relatively simple. The harder problem is choosing one person (say, you, the reader) and then finding another person who has the same number of hairs on their head as you have on yours.

This is somewhat similar PowerISO Crack 8.0 With Serial Key 2022 Free Download [Latest] the Birthday Problem. We know from probability that if you choose a random group of ~23 people, the probability is about 50% that two will share a birthday (the probability goes up to 99.9% with a group of 70 people). However, if you randomly select one person in Smart Generator Hack v4.1 crack serial keygen group of 23 and try to find a match to that person, the probability is only about 6% of finding a match; you'd need a group of 253 for a 50% probability of a shared birthday to one of the people chosen at random (and a group of more than 4,000 to obtain a 99.9% probability).

What is hard to do, then, is to try to create a file that matches a given hash value so as to force a hash value collision — which is the reason that hash functions are used extensively for information security and computer forensics applications. Alas, researchers as far back as 2004 found that practical collision attacks could be launched on MD5, SHA-1, and other hash algorithms and, today, it is generally recognized that MD5 and SHA-1 are pretty much broken. Readers interested in this problem should read the following:

  • AccessData. (2006, April). MD5 Collisions: The Effect on Computer Forensics. AccessData White Paper.
  • Burr, W. (2006, March/April). Cryptographic hash standards: Where do we go from here?IEEE Security & Privacy, 4(2), 88-91.
  • Dwyer, D. (2009, June 3). SHA-1 Collision Attacks Now 252. SecureWorks Research blog.
  • Gutman, Smart Generator Hack v4.1 crack serial keygen, P., Naccache, D., & Palmer, C.C. (2005, May/June). When hashes collide. IEEE Security & Privacy, 3(3), 68-71.
  • Kessler, G.C. (2016). The Impact of MD5 File Hash Collisions on Digital Forensic Imaging. Journal of Digital Forensics, Security & Law, 11(4), 129-138.
  • Kessler, G.C. (2016). The Impact of SHA-1 File Hash Collisions on Digital Forensic Imaging: A Follow-Up Experiment. Journal of Digital Forensics, Security & Law, 11(4), Smart Generator Hack v4.1 crack serial keygen, 139-148.
  • Klima, V. (2005, March). Finding MD5 Collisions - a Toy For a Notebook.
  • Lee, R. (2009, January 7). Law Is Not A Science: Admissibility of Computer Evidence and MD5 Hashes. SANS Computer Forensics blog.
  • Leurent, G. & Peyrin, T. (2020, January). SHA-1 is a Shambles: First Chosen-Prefix Collision on SHA-1 and Application to the PGP Web of Trust. Real World Crypto 2020.
  • Leurent, G. & Peyrin, T. (2020, January). SHA-1 is a Shambles: First Chosen-Prefix Collision on SHA-1 and Application to the PGP Web of Trust.(paper)
  • Stevens, M., Bursztein, E., Karpman, P., Albertini, A., & Markov, Y. (2017). The first collision for full SHA-1.
  • Stevens, M., Karpman, P., & Peyrin, T. (2015, October 8). Freestart collision on full SHA-1. Cryptology ePrint Archive, Report 2015/967.
  • Thompson, E. (2005, February). MD5 collisions and the impact on computer forensics. Digital Investigation, 2(1), 36-40.
  • Wang, X., Feng, D., Lai, X., & Yu, H, Smart Generator Hack v4.1 crack serial keygen. (2004, August). Collisions for Hash Functions MD4, MD5, HAVAL-128 IsoBuster Pro crack serial keygen RIPEMD.
  • Wang, X., Yin, Y.L., & Yu, H. (2005, February 13). Collision Search Attacks on SHA1.

Readers are also referred to the Eindhoven University of Technology HashClash Project Web site. for For additional information on hash functions, see David Hopwood's MessageDigest Algorithms page and Peter Selinger's MD5 Collision Demo page. For historical purposes, take a look at the situation with hash collisions, circa 2005, in RFC 4270.

In October 2015, the SHA-1 Freestart Collision was announced; see a report by Bruce Schneier and the developers of the attack (as well as the paper above by Stevens et al. (2015)). In February 2017, the first SHA-1 collision was announced on the Google Security Blog and Centrum Wiskunde & Informatica's Shattered page. See also the paper by Stevens et al. (2017), listed above. If ths isn't enough, see the SHA-1 is a Shambles Web page and the Leurent & Peyrin paper, listed above.

For an interesting twist on this discussion, read about the Nostradamus attack reported at Predicting the winner of the 2008 US Presidential Elections using a Sony PlayStation 3 (by M. Stevens, A.K. Lenstra, and B. de Weger, November 2007).

Finally, note that certain extensions of hash functions are used for K7 Total Security Crack 16.0.0556 With Activation Key variety of information security and digital forensics applications, such as:

  • Hash libraries, aka hashsets, are sets of hash values corresponding to known files. A hashset containing the hash values of all files known to be a part of a given operating system, for example, could form a set of known good files, and could be ignored in an investigation for malware or other suspicious file, whereas as hash library of known child pornographic images could form a set of known bad files and be the target of such an investigation.
  • Rolling hashes refer to a set of hash values that are computed based upon a fixed-length "sliding window" through the input. As an example, a hash value might be computed on bytes 1-10 of a file, then on bytes 2-11, 3-12, 4-13, etc.
  • Fuzzy hashes are an area of intense research and represent hash values that represent two inputs that are similar. Fuzzy hashes are used to detect documents, Smart Generator Hack v4.1 crack serial keygen, images, or other files that are close to each other with respect to content. See "Fuzzy Hashing" by Jesse Kornblum for a good treatment of this topic.

3.4. Why Three Encryption Techniques?

Smart Generator Hack v4.1 crack serial keygen, why Smart Generator Hack v4.1 crack serial keygen there so many different types of cryptographic schemes? Why can't we do everything we need with just one?

The answer is that each scheme is optimized for some specific cryptographic application(s). Hash functions, for example, are well-suited for ensuring data integrity because any change made to the contents of a message will result in the receiver calculating a different hash value than the one placed in the transmission by the sender. Since it is highly unlikely that two different messages will yield the same hash value, data integrity is ensured to a high degree of confidence.

Secret key cryptography, on the other hand, is ideally suited to encrypting messages, thus providing privacy and confidentiality. The sender can generate a session key on a per-message basis to encrypt the message; the receiver, of course, needs the same session key in order to decrypt the message.

Key exchange, of course, is a key application of public key cryptography (no pun intended). Asymmetric schemes can also be used for non-repudiation and user authentication; if the receiver can obtain the session key encrypted with the sender's private key, then only this sender could have sent the message. Public key cryptography could, theoretically, also be used to encrypt messages although this is rarely done because secret key cryptography values can generally be computed about 1000 times faster than public key cryptography values.

FIGURE 4: Use of the three cryptographic techniques for secure communication.

Figure 4 puts all of this together and shows how a hybrid cryptographic scheme combines all of these functions to form a secure transmission comprising a digital signature and digital envelope. In this example, the sender of the message is Alice and the receiver is Bob.

A digital envelope comprises an encrypted message and an encrypted session key. Alice uses secret key cryptography to encrypt her message using the session key, which she generates at random with each session. Alice then encrypts the session key using Bob's public key. The encrypted message and encrypted session key together form the digital envelope. Upon receipt, Bob recovers the session secret key using his private key and then decrypts the encrypted message.

The digital signature is formed in two steps. First, Alice computes the hash value of her message; next, she encrypts the hash value with her private key. Upon receipt of the digital signature, Bob recovers the hash value calculated by Alice by decrypting the digital signature with Alice's public key. Bob can then apply the hash function to Alice's original message, which he has already decrypted (see previous paragraph). If the resultant hash value is not the same as the value supplied by Alice, then Bob knows that the message has been altered; if the hash values are the same, Bob should believe that the message he received is identical to the one that Alice sent.

This scheme also provides nonrepudiation since it proves that Alice sent the message; if the hash value recovered by Bob using Alice's public key proves that the message has not been altered, then only Alice could have created the digital signature. Bob also has proof that he is the intended receiver; if he can correctly decrypt the message, then he must have correctly decrypted the session key meaning that his is the correct private key.

This diagram purposely suggests a cryptosystem where the session key is used for just a single session. Even if this session key is somehow broken, only this session will be compromised; the session key for the next session is not based upon the key for this session, Smart Generator Hack v4.1 crack serial keygen, just as this session's key was not dependent on the key from the previous session, Smart Generator Hack v4.1 crack serial keygen. This is known as Perfect Forward Secrecy; you might lose one session key due to a compromise but you won't lose all of them. (This was an issue in the 2014 OpenSSL vulnerability known as Heartbleed.)

3.5. The Significance of Key Length

In a 1998 article in the industry literature, a writer made the claim that 56-bit keys did not provide as adequate protection for DES at that time as they did in 1975 because computers were 1000 times faster in 1998 than in 1975. Therefore, Smart Generator Hack v4.1 crack serial keygen, the writer went on, we needed 56,000-bit keys in 1998 instead of 56-bit keys to Traktor Pro 3.5.0 Crack Full Torrent Free Download [Latest] adequate protection. The conclusion was then drawn that because 56,000-bit keys are infeasible (true), we should accept the fact that we have to live with weak cryptography (false!). The major error here is that the writer did not take into account that the number of possible key values double whenever a single bit is added to the key length; thus, a 57-bit key has twice as many values as a 56-bit key (because 257 is two times 256). In fact, a 66-bit key would have 1024 times more values than a 56-bit key.

But this does bring up the question — "What is the significance of key length as it affects the level of protection?"

In cryptography, size does matter. The larger the key, Smart Generator Hack v4.1 crack serial keygen, the harder it is to crack a block of encrypted data. The reason that large keys offer more protection is almost obvious; computers Smart Generator Hack v4.1 crack serial keygen made it easier to attack ciphertext by using brute force methods rather than by attacking the mathematics (which are generally well-known anyway). With a brute force attack, the attacker merely generates every possible key and applies it to the ciphertext. Any resulting plaintext that makes sense offers a candidate for a legitimate key. This was the basis, of course, of the EFF's attack on DES.

Until the mid-1990s or so, brute force attacks were beyond the capabilities of computers that were within the budget of the attacker community. By that time, however, significant compute power was typically available and accessible. General-purpose computers such as PCs were already being used for brute force attacks. For serious attackers with money to spend, such as some large companies or governments, Field Programmable Gate Array (FPGA) or Application-Specific Integrated Circuits (ASIC) technology offered the ability to build specialized chips that could provide even faster and cheaper solutions than a PC. As an example, the AT&T Optimized Reconfigurable Cell Array (ORCA) FPGA chip cost about $200 and could test 30 million DES keys per second, while a $10 ASIC chip could test 200 million DES keys per second; compare that to a PC which might be able to test 40,000 keys per second. Distributed attacks, harnessing the power of up to tens of thousands of powerful CPUs, are now commonly employed to try to brute-force crypto keys.

Type of AttackerBudgetToolTime and Cost
Per Key Recovered
Key Length Needed
For Protection
In Late-1995
40 bits56 bits
Pedestrian HackerTinyScavenged
1 weekInfeasible45
$400FPGA5 hours
38 years
Small Business$10,000FPGA12 minutes
18 months
Corporate Department$300KFPGA24 seconds
19 days
ASIC0.18 seconds
3 hours
Big Company$10MFPGA7 seconds
13 hours
ASIC0.005 seconds
6 minutes
Intelligence Agency$300MASIC0.0002 seconds
12 seconds

Table 2 — from a 1996 article discussing both why exporting 40-bit keys was, Smart Generator Hack v4.1 crack serial keygen, in essence, no crypto at all and why DES' days were numbered — shows what DES key sizes were needed to protect data from attackers with different time and financial resources. This information was not merely academic; one of the basic tenets of any security system is to have an idea of what you are protecting and from whom are you protecting it! The table clearly shows that a 40-bit key was essentially worthless against even the most unsophisticated attacker. On the other hand, 56-bit keys were fairly strong unless you might be subject to some pretty serious corporate or government espionage. But Smart Generator Hack v4.1 crack serial keygen that even 56-bit keys were clearly on the decline in their value and that the times in the table were worst cases.

So, how big is big enough? DES, Smart Generator Hack v4.1 crack serial keygen, invented in 1975, was still in use at the turn of the century, nearly 25 years later. If we take that to be a design criteria (i.e., a 20-plus year lifetime) and we believe Moore's Law ("computing power doubles every 18 months"), then a key size extension of 14 bits (i.e., a factor of more than 16,000) should be adequate. The 1975 DES proposal suggested 56-bit keys; by 1995, a 70-bit key would have been required to offer equal protection and an 85-bit key necessary by 2015.

A 256- or 512-bit SKC key will probably suffice for some time because that length keeps us ahead of the brute force capabilities of the attackers. Note that while a large key is good, a huge key may not always be better; for example, expanding PKC keys beyond the current 2048- or 4096-bit lengths doesn't add any necessary protection at this time. Weaknesses in cryptosystems are largely based upon key management rather than weak keys.

Much of the discussion above, including the table, is based on the paper "Minimal Key Lengths for Symmetric Ciphers to Provide Adequate Commercial Security" by M. Blaze, W, Smart Generator Hack v4.1 crack serial keygen. Diffie, R.L. Rivest, B. Schneier, T. Shimomura, E. Thompson, and M, Smart Generator Hack v4.1 crack serial keygen. Wiener (1996).

The most effective large-number factoring methods today use a mathematical Number Field Sieve to find a certain number of relationships and then uses a matrix operation to solve a linear equation to produce the two prime factors. The sieve step actually involves a large number of operations that can be performed in parallel; solving the linear equation, however, Smart Generator Hack v4.1 crack serial keygen, requires a supercomputer. Indeed, finding the solution to the RSA-140 challenge in February 1999 — factoring a 140-digit (465-bit) prime number — required 200 computers across the Internet about 4 weeks for the first step and a Cray computer 100 hours and 810 MB of memory to do the second step.

In early 1999, Shamir (of RSA fame) described a new machine that could increase factorization speed by 2-3 orders of magnitude. Although no detailed plans were provided nor is one known to have been built, the concepts of TWINKLE (The Weizmann Institute Key Locating Engine) could result in a specialized piece of hardware that would cost about $5000 and have the processing power of 100-1000 PCs. There still appear to be many engineering details that have to be worked out before such a machine could be built. Furthermore, the hardware improves the sieve step only; the matrix operation is not optimized at all by this design and the complexity of this step grows rapidly with key length, both in terms of processing time and memory requirements, Smart Generator Hack v4.1 crack serial keygen. Nevertheless, this plan conceptually puts 512-bit keys within reach of being factored. Although most PKC schemes allow keys that are 1024 bits and longer, Shamir claims that 512-bit RSA keys "protect 95% of today's E-commerce on the Internet." (See Bruce Schneier's Crypto-Gram (May 15, 1999) for more information.)

It is also interesting to note that while cryptography is good and strong cryptography is better, long keys may disrupt the nature of the randomness of data files. Shamir and van Someren ("Playing hide and seek with stored keys") have noted that a new generation of viruses can be written that will find files encrypted with long keys, Smart Generator Hack v4.1 crack serial keygen, making them easier to find by intruders and, therefore, more prone to attack.

Finally, U.S. government policy has tightly controlled the export of crypto products since World War II. Until the mid-1990s, export outside of North America of cryptographic products using keys greater than 40 bits in length was prohibited, which made those products essentially worthless in the marketplace, particularly for electronic commerce; today, crypto products are widely available on the Internet without restriction. The U.S. Department of Commerce Bureau of Industry and Security maintains an Encryption FAQ web page with more information about the current state of encryption registration.

Without meaning to editorialize too much in this tutorial, a bit of historical context might be helpful. In the mid-1990s, the U.S. Department of Commerce still classified cryptography as a munition and limited the export of any products that contained crypto. For that reason, browsers in the 1995 era, such as Internet Explorer and Netscape, had a Smart Generator Hack v4.1 crack serial keygen version with 128-bit encryption (downloadable only in the U.S.) and an export version with 40-bit encryption. Many cryptographers felt that Smart Generator Hack v4.1 crack serial keygen export limitations should be lifted because they only applied to U.S. products and seemed to have been put into place by policy makers who believed that only the U.S. knew how to build strong crypto algorithms, ignoring the work ongoing in Australia, Canada, Israel, South Africa, the U.K., and other locations in the 1990s. Those restrictions were lifted by 1996 or 1997, but there is still a prevailing attitude, apparently, that U.S, Smart Generator Hack v4.1 crack serial keygen. crypto algorithms are the only strong ones around; consider Bruce Schneier's blog in June 2016 titled "CIA Director John Brennan Pretends Foreign Cryptography Doesn't Exist." Cryptography is a decidedly international game today; note the many countries mentioned above as having developed various algorithms, not the least Smart Generator Hack v4.1 crack serial keygen which is the fact that NIST's Advanced Encryption Standard employs an algorithm submitted by cryptographers from Belgium. For more evidence, see Schneier's Worldwide Encryption Products Survey (February 2016).

On a related topic, public key crypto schemes can be used for several purposes, including key exchange, digital signatures, authentication, and more. In those PKC systems used for SKC key exchange, the PKC key lengths are chosen so as to be resistant to some selected level of attack. The length of the secret keys exchanged via that system have to have at least the same level of attack resistance. Thus, the three parameters of such a system — system strength, secret key strength, and public key strength — must be matched. This topic is explored in more detail in Determining Strengths For Public Keys Used For Exchanging Symmetric Keys (RFC 3766).


Secure use of cryptography requires trust. While secret key cryptography can ensure message confidentiality and hash codes can ensure integrity, none of this works without trust. In SKC, Alice and Bob had to share Smart Generator Hack v4.1 crack serial keygen secret key. PKC solved the secret distribution problem, but how does Alice really know that Bob is who he says he is? Just because Bob has a public and private key, and purports to be "Bob," how does Alice know that a malicious person (Mallory) is not pretending to be Bob?

There are a number of trust models employed by various cryptographic schemes. This section will explore three of them:

  • The web of trust employed by Pretty Good Privacy (PGP) users, who hold their own set of trusted public keys.
  • Kerberos, a secret key distribution scheme using a trusted third party.
  • Certificates, which allow a set of trusted third parties to authenticate each other and, by implication, each other's users.

Each of these trust models differs in complexity, general applicability, scope, and scalability.

4.1. PGP Web of Trust

Pretty Good Privacy (described more below in Section 5.5) is a widely used private e-mail scheme based on public key methods, Smart Generator Hack v4.1 crack serial keygen. A PGP user maintains a local keyring of all their known and trusted public keys. The user makes their own determination about the trustworthiness of a key using what is called a "web of trust."

FIGURE 5: GPG keychain.

Figure 5 shows a PGP-formatted keychain from the GNU Privacy Guard (GPG) software, an implementation of the OpenPGP standard. This is a section of my keychain, so only includes public keys from individuals whom I know and, presumably, trust. Note that keys are associated with e-mail addresses rather than individual names.

In general, the PGP Web of trust works as follows. Suppose that Alice needs Bob's public key. Alice could just ask Bob for it directly via e-mail or download the public key from a PGP key server; this server might a well-known PGP key repository or a site that Bob maintains himself. In fact, Bob's public key might be stored or listed in many places. (My public key, for example, can be found at or at several public PGP key servers, including Alice is prepared to believe that Bob's public key, as stored at these locations, is valid.

Suppose Carol claims to hold Bob's public key and offers to give the key to Alice. How does Alice know that Carol's version of Bob's key is valid or if Carol is actually giving Alice a key that will allow Mallory access to messages? The answer is, "It depends." If Alice trusts Carol and Carol says that she thinks that her version of Bob's key is valid, then Alice may — at her option — trust that key. Smart Generator Hack v4.1 crack serial keygen trust is not necessarily transitive; if Dave has a copy of Bob's key and Carol trusts Dave, it does not necessarily follow that Alice trusts Dave even if she does trust Carol.

The point here is that who Alice trusts and how she makes that determination is strictly up to Alice, Smart Generator Hack v4.1 crack serial keygen. PGP makes no statement and has no protocol about how one user determines whether they trust another user or not. In any case, encryption and signatures based on public keys can only be used when the appropriate public key is on the user's keyring.

4.2. Kerberos

Kerberos is a commonly used authentication scheme on the Internet. Developed by MIT's Project Athena, Kerberos is named for the three-headed dog who, according to Greek mythology, guards the entrance of Hades (rather than the exit, for some reason!).

Kerberos employs a client/server architecture and provides user-to-server authentication rather than host-to-host authentication. In this model, security and authentication will be based on secret key technology where every host on the network has its own secret key. It would clearly be unmanageable if every host had to know the keys of all other hosts so a secure, Smart Generator Hack v4.1 crack serial keygen, trusted host somewhere on the network, known as a Key Distribution Center (KDC), knows the keys for all of the hosts (or at least some of the hosts within a portion of the network, called a realm). In this way, when a new node is brought online, only the KDC and the new node need to be configured with the node's key; keys can be distributed physically or by some other secure means.

FIGURE 6: Kerberos architecture.

The Kerberos Server/KDC has two main functions (Figure 6), known as the Authentication Server (AS) and Ticket-Granting Server (TGS). The steps Smart Generator Hack v4.1 crack serial keygen establishing an authenticated session between an application client and the application server are:
  1. The Kerberos client software establishes a connection with the Kerberos server's AS function. The AS first authenticates that the client is who it purports to be. The AS then provides the client with a secret key for this login session (the TGS session key) and a ticket-granting ticket (TGT), which gives the client permission to talk to the TGS. The ticket has a finite lifetime so that the authentication process is repeated periodically.
  2. The client now communicates with the TGS to obtain the Application Server's key so that it (the client) can establish a connection to the service it wants. The client supplies the TGS with the TGS session key and TGT; the TGS responds with an application session key (ASK) and an encrypted form of the Application Server's secret key; this secret key is never sent on the network in any other form.
  3. The client has now authenticated itself and can prove its identity to the Application Server by supplying the Kerberos ticket, application session key, and encrypted Application Server secret key, Smart Generator Hack v4.1 crack serial keygen. The Application Server responds with similarly encrypted information to authenticate itself to the client. At this point, the client can initiate the intended service requests (e.g., Telnet, FTP, HTTP, or e-commerce transaction session establishment).

The current version of this protocol is Kerberos V5 (described in RFC 1510). While the details of their operation, functional capabilities, and message formats are different, the conceptual overview above pretty much holds for both. One primary difference is that Kerberos V4 uses only DES to generate keys and encrypt messages, while V5 allows other schemes to be employed (although DES is still the most widely algorithm used).

4.3. Public Key Certificates and Certificate Authorities

Certificates and Certificate Authorities (CA) are necessary for widespread use of cryptography for e-commerce applications. While a combination of secret and public key cryptography can solve the business issues discussed above, crypto cannot alone address the trust issues that must exist between a customer and vendor in the very fluid, very dynamic e-commerce relationship. How, for example, does one site obtain another party's public key? How does a recipient determine if a public key really belongs to the sender? How does the recipient know that the sender is using their public key for a legitimate purpose for which they are authorized? When does a public key expire? How can a key be revoked in case of compromise or loss?

The basic concept of a certificate is one that is familiar to all of us. A driver's license, credit card, or SCUBA certification, for example, identify us to others, indicate something that we are authorized to do, have an expiration date, Smart Generator Hack v4.1 crack serial keygen, and identify the authority that granted the certificate.

As complicated as this may sound, it really isn't. Consider driver's licenses. I have one issued by the State of Florida. The license establishes my identity, indicates the type of vehicles that I can operate and the fact that I must wear corrective lenses while doing so, identifies the issuing authority, and notes that I am an organ donor. When I drive in other states, the other jurisdictions throughout Smart Generator Hack v4.1 crack serial keygen U.S. recognize the authority of Florida to issue this "certificate" and they trust the information it contains. When I leave the U.S., everything changes. When I am in Aruba, Australia, Canada, Israel, and many other countries, they will accept not the Florida license, per se, but any license issued in the U.S. This analogy represents the certificate trust chain, where even certificates carry certificates.

For purposes of electronic transactions, certificates are digital documents. The specific functions of the certificate include:

  • Establish identity: Associate, or bind, Smart Generator Hack v4.1 crack serial keygen, a public key to an individual, organization, corporate position, or other entity.
  • Assign authority: Establish what actions the holder may or may not take based upon this certificate.
  • Secure confidential information (e.g., encrypting the session's symmetric key for data confidentiality).

Typically, a certificate contains a public key, a name, an expiration date, the name of the authority that issued the certificate (and, therefore, is vouching for the identity of the user), a serial number, any pertinent policies describing how the certificate was issued and/or how the certificate may be used, the digital signature of the certificate issuer, and perhaps other information.

FIGURE 7: VeriSign Class 3 certificate.

A sample abbreviated certificate is shown in Figure 7. This is a typical certificate found in a browser, in this case, Mozilla Firefox (MacOS). While this is a certificate issued by VeriSign, many root-level certificates can be found shipped with browsers. When the browser makes a connection to a secure Web site, the Web server sends its public key certificate to the browser. The browser then checks the certificate's signature against the public key that it has stored; if there is a match, the certificate is taken as valid and the Web site verified by this certificate is considered to be "trusted."

The most widely accepted certificate format is the one defined in International Telecommunication Union Telecommunication Standardization Sector (ITU-T) Recommendation X.509. Rec. X.509 is a specification used around the world and any applications complying with X.509 can share certificates. Most certificates today comply with X.509 Version 3 and contain the following information:

  • Version number
  • Certificate serial number
  • Signature algorithm identifier
  • Issuer's name and unique identifier
  • Validity (or operational) period
  • Subject's name and unique identifier
  • Subject public key information
  • Standard extensions
    • Certificate appropriate use definition
    • Key usage limitation definition
    • Certificate policy information
  • Other extensions
    • Application-specific
    • CA-specific

Certificate authorities are the repositories for public keys and can be any agency that issues certificates. A company, for example, may issue certificates to its employees, Smart Generator Hack v4.1 crack serial keygen, a college/university to its students, a store to its customers, an Internet service provider to its users, or a government to its constituents.

When a sender needs an intended receiver's public key, the sender must get that key from the receiver's CA. That scheme is straight-forward if the sender and receiver have certificates issued by the same CA. If not, how does the sender know to trust the foreign CA? One industry wag has noted, about trust: "You are either born with it or have it granted upon you." Thus, some CAs will be trusted because they are known to be reputable, such as the CAs operated by AT&T Services, Comodo, DigiCert (formerly GTE Cybertrust), EnTrust, Broadcom (formerly Symantec, formerly VeriSign), and Thawte. CAs, in turn, form trust relationships with other CAs. Thus, if a user queries a foreign CA for information, the user may ask to see a list of CAs that establish a "chain of trust" back to the user.

One major feature to look for in a CA is their identification policies and procedures. When a user generates a key pair and forwards the public key to a CA, the CA has to check the sender's identification and takes any steps MediaHuman YouTube Downloader Crack Full Version Download to assure itself that the request is really coming from the advertised sender. Different CAs have different identification policies and will, therefore, be trusted differently by other Smart Generator Hack v4.1 crack serial keygen. Verification of identity is just one of many issues that are part of a CA's Certification Practice Statement (CPS) and policies; other issues include how the CA protects the public keys in its care, how lost or compromised keys are revoked, and how the CA protects its own private keys.

As a final note, CAs are not immune to Corel draw graphics suit x7 crack serial keygen and certificates themselves are able to be counterfeited. One of the first such episodes occurred at the turn of the century; on January 29 and 30, 2001, two VeriSign Class 3 code-signing digital certificates were issued to an individual who fraudulently claimed to be a Microsoft employee (CERT/CC CA-2001-04 and Microsoft Security Bulletin MS01-017 - Critical). Problems have continued over the years; good write-ups on this can be found at "Another Certification Authority Breached (the 12th!)" and "How Cybercrime Exploits Digital Certificates." Readers are also urged to read "Certification Authorities Under Attack: A Plea for Certificate Legitimation" (Oppliger, R., January/February 2014, IEEE Internet Computing, 18(1), 40-47).

As a partial way to address this issue, the Internet Security Research Group (ISRG) designed the Automated Certificate Management Environment (ACME) protocol. ACME is a communications protocol that streamlines the process of deploying a Public Key Infrastructure (PKI) by automating interactions between CAs and Web servers that wish to obtain a certificate. More information can be found at the Let's Encrypt Web site, an ACME-based CA service provided by the ISRG.

4.4. Summary

The paragraphs above describe three very different trust models. It is hard to say that any one is better than the others; it depends upon your application. One of the biggest and fastest growing applications of cryptography today, though, is Smart Generator Hack v4.1 crack serial keygen commerce (e-commerce), a term that itself begs for a formal definition.

PGP's web of trust is easy to maintain and very much based on the reality of users as people. The model, however, is limited; just how many public keys can a single user reliably store and maintain? And what if you are using the "wrong" computer when you want to send a message and can't access your keyring? How easy it is to revoke a key if it is compromised? PGP may also not scale well to an e-commerce scenario of secure communication between total strangers on short-notice.

Kerberos overcomes many of the problems of PGP's web of trust, in that it is scalable and its scope can be very large. However, it also requires that the Kerberos server have a priori knowledge of all client systems prior to any transactions, which makes it unfeasible for "hit-and-run" client/server relationships as seen in e-commerce.

Certificates and the collection of CAs will form a PKI. In the early days of the Internet, every host had to maintain a list of every other host; the Domain Name System (DNS) introduced the idea of a distributed database for this purpose and the DNS is one of the key reasons that the Internet has grown as it has. A PKI will fill a similar void in the e-commerce and PKC realm.

While certificates and the benefits of a PKI are most often associated with electronic commerce, the applications for PKI are much broader and include secure electronic mail, payments and electronic checks, Electronic Data Interchange (EDI), secure transfer of Domain Name System (DNS) and routing information, electronic forms, and digitally signed documents. A single "global PKI" is still many years away, that is the ultimate goal of today's work as international electronic commerce changes the way in which we do business in a similar way in which the Internet has changed the way in which we communicate.


The paragraphs above have provided an overview of the different types of cryptographic algorithms, as well as some examples of some available protocols and schemes. Table 3 provides a list of some other noteworthy schemes and cryptosystems employed — or proposed — for a variety of functions, Smart Generator Hack v4.1 crack serial keygen, most notably electronic commerce and secure communication. The paragraphs below will show several real cryptographic applications that many of us employ (knowingly or not) everyday for password protection and private communication. Some of the schemes described below never were widely deployed but are still historically interesting, thus remain included here. This list is, by no means, exhaustive but describes items that are of significant current and/or historic importance (a subjective judgement, to be sure).

BitmessageA decentralized, encrypted, peer-to-peer, trustless communications protocol for message exchange. The decentralized design, outlined in "Bitmessage: A Peer-to-Peer Message Authentication and Delivery System" (Warren, 2012), is conceptually based on the Bitcoin model.
CapstoneA now-defunct U.S. National Institute of Standards and Technology (NIST) and National Security Agency (NSA) project under the Bush Sr. and Clinton administrations for publicly available strong cryptography with keys escrowed by the government (NIST and the Treasury Dept.). Capstone included one or more tamper-proof computer chips for implementation (Clipper), a secret key encryption algorithm (Skipjack), digital signature algorithm (DSA), key exchange algorithm (KEA), and hash algorithm (SHA).
Challenge-Handshake Authentication Protocol (CHAP)An authentication scheme that allows one party to prove who they are to a second party by demonstrating knowledge of a shared secret without actually divulging that shared secret to a third party who might be listening. Described in RFC 1994.
Chips-Message Robust Authentication (CHIMERA)A scheme proposed for authenticating navigation data and the spreading code of civilian signals in the Global Positioning System (GPS). This is an anti-spoofing mechanism to protect the unencrypted civilian signals; GPS military signals Smart Generator Hack v4.1 crack serial keygen encrypted.
ClipperThe computer chip that would implement the Skipjack encryption scheme. The Clipper chip was to have had a deliberate backdoor so that material encrypted with this device would not be beyond the government's reach. Described in 1993, Clipper was dead by 1996. See also EPIC's The Clipper Chip Web page.
Cryptography Research and Evaluation Committees (CRYPTEC)Similar in concept to the NIST AES process and NESSIE, CRYPTEC is the Japanese government's process to evaluate algorithms submitted for government and industry applications. CRYPTEX maintains a list of public key and secret key ciphers, hash functions, MACs, and other crypto algorithms approved for various applications in government environments.
Derived Unique Key Per Transaction (DUKPT)A key management scheme used for debit and credit card verification with point-of-sale (POS) transaction systems, Smart Generator Hack v4.1 crack serial keygen, automated teller machines (ATMs), and other financial applications. In DUKPT, a unique key is derived for each transaction based upon a fixed, shared key in such a way that knowledge of one derived key does not easily yield knowledge of other keys (including the fixed key). Therefore, if one of the derived keys is compromised, neither past nor subsequent transactions are endangered. DUKPT is specified in American National Standard (ANS) ANSI X9.24-1:2009 (Retail Financial Services Symmetric Key Management Part 1: Using Symmetric Techniques) and can be purchased at the ANSI X9.24 Web page.
ECRYPT Stream Cipher Project (eSTREAM)The eSTREAM project came about as a result of the failure of the NESSIE project to produce a stream cipher that survived cryptanalysis. eSTREAM ran from 2004 to 2008 with the primary purpose of promoting the design of efficient and compact stream ciphers. As of September 2008, the eSTREAM suite contains seven sciphers.
Escrowed Encryption Standard (EES)Largely unused, a controversial crypto scheme employing the SKIPJACK secret key crypto algorithm and a Law Enforcement Access Field (LEAF) creation method. LEAF was one part of the key escrow system and allowed for decryption of ciphertext messages that had been intercepted by law enforcement agencies. Described more in FIPS PUB 185 (archived; no longer in force).
Federal Information Processing Standards (FIPS)These computer security- and crypto-related FIPS PUBs are produced by the U.S. National Institute of Standards and Technology (NIST) as standards for the U.S. Government. Current Federal Information Processing Standards (FIPS) related to crytography include:
FortezzaA PCMCIA card developed by NSA that implements the Capstone algorithms, intended for use with the Defense Messaging Service (DMS). Originally called Tessera.
GOSTGOST is a family of algorithms defined in the Russian cryptographic standards. Although most of the specifications are written in Russian, a series of RFCs describe some of the aspects so that the algorithms can be used effectively in Internet applications:
  • RFC 4357: Additional Cryptographic Algorithms for Use with GOST 28147-89, GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms
  • RFC 4490: Using the GOST 28147-89, GOST R 34.11-94, GOST R 34.10-94, and GOST R 34.10-2001 Algorithms with Cryptographic Message Syntax (CMS)
  • RFC 4491: Using the GOST R 34.10-94, GOST R 34.10-2001, and GOST R 34.11-94 Algorithms with the Internet X.509 Public Key Infrastructure Certificate and CRL Profile
  • RFC 5830: GOST 28147-89: Encryption, Decryption, and Message Authentication Code (MAC) Algorithms
  • RFC 6986: GOST R 34.11-2012: Hash Function Algorithm
  • RFC 7091: GOST R 34.10-2012: Digital Signature Algorithm (Updates RFC 5832: GOST R 34.10-2001)
  • RFC 7801: GOST R 34.12-2015: Block Cipher "Kuznyechik"
  • RFC 7836: Guidelines on the Cryptographic Algorithms to Accompany the Usage of Standards GOST R 34.10-2012 and GOST R 34.11-2012
  • RFC 8891: GOST R 34.12-2015: Block Cipher "Magma"
IP Security (IPsec)The IPsec protocol suite is used to provide privacy and authentication services at the IP layer. An overview of the protocol suite and of the documents comprising IPsec can be found in RFC 2411. Other documents include:
  • RFC 4301: IP security architecture.
  • RFC 4302: IP Authentication Header (AH), one of the two primary IPsec functions; AH provides connectionless integrity and data origin authentication for IP datagrams and protects against replay attacks.
  • RFC 4303: IP Encapsulating Security Payload (ESP), the other primary IPsec function; ESP provides a variety of security services within IPsec, Smart Generator Hack v4.1 crack serial keygen.
  • RFC 4304: Extended Sequence Number (ESN) Addendum, allows for negotiation of a 32- or 64- bit sequence number, used to detect replay attacks.
  • RFC 4305: Cryptographic algorithm implementation requirements for ESP and AH.
  • RFC 5996: The Internet Key Exchange (IKE) protocol, version 2, providing for mutual authentication and establishing and maintaining security associations.
    • IKE v1 was described in three separate documents, RFC 2407 (application of ISAKMP to IPsec), RFC 2408 (ISAKMP, a framework for key management and security associations), and RFC 2409 (IKE, using part of Oakley and part of SKEME in conjunction with ISAKMP to obtain authenticated keying material for use with ISAKMP, and for other security associations such as AH and ESP). IKE v1 is obsoleted with the introduction of IKEv2.
  • RFC 4307: Cryptographic algorithms used with IKEv2.
  • RFC 4308: Crypto suites for IPsec, IKE, and IKEv2.
  • RFC 4309: The use of AES in CBC-MAC mode with IPsec ESP.
  • RFC 4312: The use of the Camellia cipher algorithm in IPsec.
  • RFC 4359: The Use of RSA/SHA-1 Signatures within Encapsulating Security Payload (ESP) and Authentication Header (AH).
  • RFC 4434: Describes AES-XCBC-PRF-128, a pseudo-random function derived from the AES for use with IKE.
  • RFC 2403: Describes use of the HMAC with MD5 algorithm for data origin authentication and integrity protection in both AH and ESP.
  • RFC 2405: Describes use of DES-CBC (DES in Cipher Block Chaining Mode) for confidentiality in ESP.
  • RFC 2410: Defines use of the NULL encryption algorithm (i.e., provides authentication and integrity without confidentiality) in ESP.
  • RFC 2412: Describes OAKLEY, a key determination and distribution protocol.
  • RFC 2451: Describes use of Cipher Block Chaining (CBC) mode cipher algorithms with ESP.
  • RFCs 2522 and 2523: Description of Photuris, a session-key management protocol for IPsec.

In addition, RFC 6379 describes Suite B Cryptographic Suites for IPsec and RFC 6380 describes the Suite B profile for IPsec.

Smart Generator Hack v4.1 crack serial keygen was first proposed for use with IP version 6 (IPv6), but can also be employed with the current IP version, IPv4.

(See more detail about IPsec below in Section 5.6.)

Internet Security Association and Key Management Protocol (ISAKMP/OAKLEY)ISAKMP/OAKLEY provide an infrastructure for Internet secure communications. ISAKMP, designed by the National Security Agency (NSA) and described in RFC 2408, is a framework for key management and security associations, independent of the key generation and cryptographic algorithms actually employed. The OAKLEY Key Determination Protocol, described in RFC 2412, is a key determination and distribution protocol using a variation of Diffie-Hellman.
KerberosA secret key encryption and authentication system, designed to authenticate requests for network resources within a user domain rather than to authenticate messages. Kerberos also uses a trusted third-party approach; a client communications with the Kerberos server to obtain "credentials" so that it may access services at the application server. Kerberos V4 used DES to generate keys and encrypt messages; Kerberos V5 uses DES and other schemes for key generation.

Microsoft added support for Kerberos V5 — with some proprietary extensions — in Windows 2000 Active Directory. There are many Kerberos articles posted at Microsoft's Knowledge Base, notably "Kerberos Explained."
Keyed-Hash Message Authentication Code (HMAC)A message authentication scheme based upon secret key cryptography and the secret key shared between two parties rather than public key methods. Described in FIPS PUB 198 and RFC 2104. (See Section 5.19 below for details on HMAC operation.)
Message Digest Cipher (MDC)Invented by Peter Gutman, MDC turns a one-way hash function into a block cipher.
MIME Object Security Services (MOSS)Designed as a successor to PEM to provide PEM-based security services to MIME messages. Described in RFC 1848. Never widely implemented and now defunct.
Mujahedeen SecretsA Windows GUI, PGP-like cryptosystem. Developed by supporters of Al-Qaeda, the program employs the five finalist AES algorithms, namely, MARS, RC6, Smart Generator Hack v4.1 crack serial keygen, Rijndael, Serpent, and Twofish. Also described in Inspire Magazine, Issue 1, pp. 41-44 and Inspire Magazine, Issue 2, Smart Generator Hack v4.1 crack serial keygen, pp. 58-59. Additional related information can also be found in "How Al-Qaeda Uses Encryption Post-Snowden (Part 2)."
New European Schemes for Signatures, Integrity and Encryption (NESSIE)NESSIE was an independent project meant to augment the work of NIST during the AES adoption process by putting out an open call for new cryptographic primitives, Smart Generator Hack v4.1 crack serial keygen. The NESSIE project ran from about 2000-2003. While several new block ciper, PKC, MAC, and digital signature algorithms were found during the NESSIE process, no new stream cipher survived cryptanalysis. As a result, the ECRYPT Stream Cipher Project (eSTREAM) was created.
NSA Suite B CryptographyAn NSA standard for securing information at the SECRET level. Defines use of:
  • Advanced Encryption Standard (AES) with key sizes of 128 and 256 bits, per FIPS PUB 197 for encryption
  • The Ephemeral Unified Model and the One-Pass Diffie Hellman (referred to as ECDH) using the curves with 256 and 384-bit prime moduli, per NIST Special Publication 800-56A for key exchange
  • Elliptic Curve Digital Signature Algorithm (ECDSA) using the curves with 256 and 384-bit prime moduli, per FIPS PUB 186-3 for digital signatures
  • Secure Hash Algorithm (SHA) using 256 and 384 bits, per FIPS PUB 180-3 for hashing

RFC 6239 describes Suite B Cryptographic Suites for Secure Shell (SSH) and RFC 6379 describes Suite B Cryptographic Suites for Secure IP (IPsec).

RFC 8423 reclassifies the RFCs related to the Suite B cryptographic algorithms as Historic, and it discusses the reasons for doing so.

Pretty Good Privacy (PGP)A family of cryptographic routines for e-mail, file, and disk encryption developed by Philip Zimmermann. PGP 2.6.x uses RSA for key management and digital signatures, IDEA for message encryption, and MD5 for computing the message's hash value; more information can also be found in RFC 1991. PGP 5.x (formerly known as "PGP 3") uses Diffie-Hellman/DSS for key management and digital signatures; IDEA, CAST, or 3DES for message encryption; and MD5 or SHA for computing the message's hash value. OpenPGP, described in RFC 2440, is an open definition of security software based on PGP 5.x. The GNU Privacy Guard (GPG) is a free software version of OpenPGP.

(See more detail about PGP below in Section 5.5.)

Privacy Enhanced Mail (PEM)An IETF standard for secure electronic mail over the Internet, including provisions for encryption (DES), authentication, and key management (DES, RSA). Developed by the IETF but never widely used. Described in the following RFCs:
  • RFC 1421: Part I, Message Encryption and Authentication Procedures
  • RFC 1422: Part II, Certificate-Based Key Management
  • RFC 1423: Part III, Algorithms, Smart Generator Hack v4.1 crack serial keygen, Modes, and Identifiers
  • RFC 1424: Part IV, Key Certification and Related Services
Private Communication Technology (PCT)Developed by Microsoft for secure communication on the Internet. PCT supported Diffie-Hellman, Fortezza, and RSA for key establishment; DES, RC2, RC4, and triple-DES for encryption; and DSA and RSA message signatures, Smart Generator Hack v4.1 crack serial keygen. Never widely used; superceded by SSL and TLS.
Secure Electronic Transaction (SET)A communications protocol for securing credit card transactions, developed by MasterCard and VISA, in cooperation with IBM, Smart Generator Hack v4.1 crack serial keygen, Microsoft, RSA, and other companies. Merged two other protocols: Secure Electronic Payment Protocol (SEPP), an open specification for secure bank card transactions over the Internet developed by CyberCash, GTE, IBM, MasterCard, and Netscape; and Secure Transaction Technology (STT), a secure payment protocol developed by Microsoft and Visa International. Supports DES and RC4 for encryption, and RSA for signatures, key exchange, and public key encryption of bank card numbers. SET V1.0 is described in Book 1, Book 2, and Book 3. SET has been superceded by SSL and TLS.
Secure Hypertext Transfer Protocol (S-HTTP)An extension to HTTP to provide secure exchange of documents over the World Wide Web. Supported algorithms include RSA and Kerberos for key exchange, DES, IDEA, RC2, and Triple-DES for encryption. Described in RFC 2660. S-HTTP was never as widely used as HTTP over SSL (https).
Secure Multipurpose Internet Mail Extensions (S/MIME)An IETF secure e-mail scheme superceding PEM, and adding digital signature and encryption capability to Internet MIME messages. S/MIME Version 3.1 is described in RFCs 3850 and 3851, and employs the Cryptographic Message Syntax described in RFCs 3369 and 3370.

(More detail about S/MIME can be found below in Section 5.15.)
Secure Sockets Layer (SSL)Developed in 1995 by Netscape Communications to provide application-independent security and privacy over the Internet. SSL is designed so that protocols such as HTTP, FTP (File Transfer Protocol), and Telnet can operate over it transparently. SSL allows both server authentication (mandatory) and client authentication (optional). RSA is used during negotiation to exchange keys and identify the actual cryptographic algorithm (DES, Smart Generator Hack v4.1 crack serial keygen, IDEA, RC2, RC4, or 3DES) to use for the session. SSL also uses MD5 for message digests and X.509 public key certificates. SSL was found to be breakable soon after the IETF announced formation of group to work on TLS and RFC 6176 specifically prohibits the use of SSL v2.0 by TLS clients. SSL version 3.0 is described in RFC 6101. All versions of SSL are now deprecated in favor of TLS; TLS v1.0 is sometimes referred to as "SSL v3.1."

(More detail about SSL can be found below in Section 5.7.)
Server Gated Cryptography (SGC)Microsoft extension to SSL that provided strong encryption for online banking and other financial applications using RC2 (128-bit key), RC4 (128-bit key), DES (56-bit key), or 3DES (equivalent of 168-bit key). Use of SGC required an Windows NT Server running Internet Information Server (IIS) 4.0 with a valid SGC certificate. SGC was available in 32-bit Windows versions of Internet Explorer (IE) 4.0; support for Mac, Unix, and 16-bit Windows versions of IE was planned, but never materialized, and SGC was made moot when browsers started to ship with 128-bit encryption.
ShangMi (SM) Cipher SuitesA suite of authentication, encryption, Smart Generator Hack v4.1 crack serial keygen, and hash algorithms from the People's Republic of China.
  • SM2 Cryptography Algorithm: A public key crypto scheme based on elliptic curves. An overview of the specification, in Chinese, can be found in GM/T Smart Generator Hack v4.1 crack serial keygen. Additional specifications can be found in:
  • SM3 Cryptographic Hash Algorithm: A hash algorithm operating on 512-bit blocks to produce a 256-bit hash value. Described in GB/T 32905-2016.
  • SM4 Block Cipher Algorithm: A Feistel block cipher algorithm with a block length and key length of 128 bits, and 32 rounds. Described in GB/T 32907-2016.
An application of the ShangMi Cipher Suites in TLS can be found in RFC 8998.
Signal ProtocolA protocol for providing end-to-end encryption for voice calls, video calls, and instant messaging (including group chats). Employing a combination of AES, ECC, and Logicly 1.13.0 Crack With Serial Number Full Version (2021) algorithms, it offers such features as confidentiality, integrity, authentication, forward/future secrecy, and message repudiation. Signal is particularly interesting because of its lineage and widespread use. The Signal Protocol's earliest versions were known as TextSecure, first developed by Open Whisper Systems in 2013. TextSecure itself was based on a 2004 protocol called Off-the-Record (OTR) Messaging, designed as an improvement over OpenPGP and S/MIME. TextSecure v2 (2014) introduced a scheme called the Axolotl Ratchet for key exchange and added additional communication features. After subsequent iterations improving key management (and the renaming of the key exchange protocol to Double Ratchet), additional cryptographic primitives, and the addition of an encrypted voice calling application (RedPhone), TextSecure was renamed Signal Protocol in 2016. The Ratchet key exchange algorithm is at the heart of the power of this system. Most messaging apps employ the users' public and private keys; the weakness here is that if the phone falls into someone else's hands, all of the messages on the device — including deleted messages — can be decrypted. The Ratchet algorithm generates a set of so-called "temporary keys" for each user, based upon that user's public/private key pair. When two users exchange messages, the Signal protocol creates a secret key by combining the temporary and permanent pairs of public and private keys for both users. Each message is assigned its own secret key. Because the generation of the secret key requires access to both users' private keys, it exists only on their two devices. The Signal Protocol is/has been employed in:
  • WhatsApp (introduced 2014)
  • G Data Software's Secure Chat (introduced 2015; service discontinued 2018)
  • Google's Allo app (introduced 2016; discontinued in favor of Messages app, 2019)
  • Facebook Messenger (introduced 2016)
  • Skype's Sylenth1 3.070 Crack + Serial Keys [Win/Mac] 2021 Conversations mode (introduced 2018)
  • All of Google's Rich Communication Services (RCS) on Android systems (introduced 2020)
A reasonably good writeup of the protocol can be found in "Demystifying the Signal Protocol for End-to-End Encryption (E2EE)" by Kozhukhovskaya, Mora, and Wong (2017).
Simple Authentication and Security Layer (SASL)A framework for providing authentication and data security services in connection-oriented protocols (a la TCP), described in RFC 4422. It provides a structured interface and allows new protocols to reuse existing authentication mechanisms and allows old protocols to make use of new mechanisms.

It has been common practice on the Internet to permit anonymous access to various services, employing a plain-text password using a user name of "anonymous" and a password of an email address or some other identifying information. New IETF protocols disallow plain-text logins. The Anonymous SASL Mechanism (RFC 4505) provides a method for anonymous logins within the SASL framework.
Simple Key-Management for Internet Protocol (SKIP)Key management scheme for secure IP communication, specifically for IPsec, and designed by Aziz and Diffie. SKIP essentially defines a public key infrastructure for the Internet and even uses X.509 certificates. Most public key cryptosystems assign keys on a per-session basis, which is inconvenient for the Internet since IP is connectionless. Instead, SKIP provides a basis for secure communication between any pair of Internet hosts. SKIP can employ DES, 3DES, IDEA, RC2, RC5, MD5, and SHA-1. As it happened, SKIP was not adopted for IPsec; IKE was selected instead.
SM9Chinese Standard GM/T0044-2016 SM9 (2016) is the Chinese national standard for Identity Based Cryptography. SM9 comprises three cryptographic algorithms, namely the Identity Based Digital Signature Algorithm, Identity Based Key Agreement Algorithm, and Identity Based Key Encapsulation Algorithm (allowing one party to securely send a symmetric key to another party). The SM9 scheme is also described in The SM9 Cryptographic Schemes (Z. Cheng).
TelegramTelegram, launched in 2013, is a cloud-based instant messaging and voice over IP (VoIP) service, with client app software available for all major computer and mobile device operating systems. Telegram allows users to exchange messages, photos, videos, etc., and supplies end-to-end encryption using a protocol called MTProto. stickers, audio and files of any type. MTProto employs 256-bit AES, 2048-bit RSA, and Diffie-Hellman key exchange. There have been several contriversies with Telegram, not the least of which has to do with the nationality of the founders and the true location of the business, as well as some operation issues. From a cryptological viewpoint, however, one cautionary tale can be found in "On the CCA (in)security of MTProto" (Jakobsen & Orlandi, Smart Generator Hack v4.1 crack serial keygen, 2015), who describe some of the crypto weaknesses of the protocol; specifically, that "MTProto does not satisfy the definitions of authenticated encryption (AE) or indistinguishability under chosen-ciphertext attack (IND-CCA)" (p. 1).
Transmission Control Protocol (TCP) encryption (tcpcrypt)As of 2019, the majority of Internet TCP traffic is not encrypted. The two primary reasons for this are (1) many legacy protocols have no mechanism with which to employ encryption (e.g., without a command such as STARTSSL, the protocol cannot invoke use of any encryption) and (2) many legacy applications cannot be upgraded, so no new encryption can be added. The response from the IETF's TCP Increased Security Working Group was to define a transparent way within the transport layer (i.e., TCP) with which to invoke encryption. The TCP Encryption Negotiation Option (TCP-ENO) Smart Generator Hack v4.1 crack serial keygen these two problems with an out-of-band, fully backward-compatible TCP option with which to negotiate use of encryption. TCP-ENO is described in RFC 8547 and tcpcrypt, an encryption protocol to protect TCP streams, is described in RFC 8548.
Transport Layer Security (TLS)TLS v1.0 is an IETF specification (RFC 2246) intended to replace SSL Smart Generator Hack v4.1 crack serial keygen. TLS v1.0 employs Triple-DES (secret key cryptography), SHA (hash), Diffie-Hellman (key exchange), and DSS (digital signatures). TLS v1.0 was vulnerable to attack and updated by v1.1 (RFC 4346), which is now classified as an HISTORIC specification. TLS v1.1 was replaced by TLS v1.2 (RFC 5246) and, subsequently, by v1.3 (RFC 8446).

TLS is designed to operate over TCP. The IETF developed the Datagram Transport Layer Security (DTLS) protocol to operate over UDP. DTLS v1.2 is described in RFC 6347.

(See more detail about TLS below in Section 5.7.)
TrueCryptOpen source, multi-platform cryptography software that can be used to encrypt a file, partition, or entire disk. One of TrueCrypt's more interesting features is that of plausible deniability with hidden volumes or hidden operating systems. The original Web site,, suddenly went dark in May 2014. The current fork of TrueCrypt is VeraCrypt.

(See more detail about TrueCrypt below in Section 5.11.)
X.509ITU-T recommendation for the format of certificates for the public key infrastructure. Certificates map (bind) a user identity to a public key. The IETF application of X.509 certificates is documented in RFC 5280. An Internet X.509 Public Key Infrastructure is further defined in RFC 4210 (Certificate Management Protocols) and RFC 3647 (Certificate Policy and Certification Practices Framework).

5.1. Password Protection

Nearly all modern multiuser computer and network operating systems employ passwords at the very least to protect and Smart Generator Hack v4.1 crack serial keygen users accessing computer and/or network resources. But passwords are not typically kept on a host or server in plaintext, but are generally encrypted using some sort of hash scheme.

A) /etc/passwd file root:Jbw6BwE4XoUHo:0:0:root:/root:/bin/bash carol:FM5ikbQt1K052:502:100:Carol Monaghan:/home/carol:/bin/bash alex:LqAi7Mdyg/HcQ:503:100:Alex Insley:/home/alex:/bin/bash gary:FkJXupRyFqY4s:501:100:Gary Kessler:/home/gary:/bin/bash todd:edGqQUAaGv7g6:506:101:Todd Pritsky:/home/todd:/bin/bash josh:FiH0ONcjPut1g:505:101:Joshua Kessler:/home/webroot:/bin/bash B.1) /etc/passwd file (with shadow passwords) root:x:0:0:root:/root:/bin/bash carol:x:502:100:Carol Monaghan:/home/carol:/bin/bash alex:x:503:100:Alex Insley:/home/alex:/bin/bash gary:x:501:100:Gary Kessler:/home/gary:/bin/bash todd:x:506:101:Todd Pritsky:/home/todd:/bin/bash josh:x:505:101:Joshua Kessler:/home/webroot:/bin/bash B.2) Smart Generator Hack v4.1 crack serial keygen file root:AGFw$1$P4u/uhLK$l2.HP35rlu65WlfCzq:11449:0:99999:7::: carol:kjHaN%35a8xMM8a/0kMl1?fwtLAM.K&kw.:11449:0:99999:7::: alex:1$1KKmfTy0a7#3.LL9a8H71lkwn/.hH22a:11449:0:99999:7::: gary:9ajlknknKJHjhnu7298ypnAIJKL$Jh.hnk:11449:0:99999:7::: todd:798POJ90uab6.k$klPqMt%alMlprWqu6$.:11492:0:99999:7::: josh:Awmqpsui*787pjnsnJJK%aappaMpQo07.8:11492:0:99999:7:::

FIGURE 8: Sample entries in Unix/Linux password files.

Unix/Linux, for example, uses a well-known hash via its crypt() function. Passwords are stored in the /etc/passwd file (Figure 8A); each record in the file contains the username, hashed password, user's individual and group numbers, user's name, home directory, and shell program; these fields are separated by colons (:). Note that each password is stored as a 13-byte string. The first two characters are actually a salt, randomness added to each password so that if two users have the same password, they will still be encrypted differently; the salt, in fact, provides a means so that a single password might have 4096 different encryptions. The remaining 11 bytes are the password hash, calculated using DES.

As it happens, the /etc/passwd file is world-readable on Unix systems. This fact, coupled with the weak encryption of the passwords, resulted in the development of the shadow password system where passwords are kept in a separate, non-world-readable file used in conjunction with the normal password file. When shadow passwords are used, the password entry in /etc/passwd is replaced with a "*" or "x" (Figure 8B.1) and the MD5 hash of the passwords are stored in /etc/shadow along with some other account information (Figure 8B.2).

Windows NT uses a similar scheme Smart Generator Hack v4.1 crack serial keygen store passwords in the Security Access Manager (SAM) file. In the NT case, all passwords are hashed using the MD4 algorithm, resulting in a 128-bit (16-byte) hash value (they are then obscured using an undocumented mathematical transformation that was a secret until distributed on the Internet). The password password, for example, might be stored as the hash value (in hexadecimal) 60771b22d73c34bd4a290a79c8b09f18.

Passwords are not saved in plaintext on computer systems precisely so they cannot be easily compromised. For similar reasons, we don't want passwords sent in plaintext across a network. But for remote logon applications, how does a client system identify itself or a user to the server? One mechanism, of course, is to send the password as a hash value and that, indeed, may be done. A weakness of that approach, however, is that an intruder can grab the password off of the network and use an off-line attack (such as a dictionary attack where an attacker takes every known word and encrypts it with the network's encryption algorithm, hoping eventually to find a match with a purloined password hash). In some situations, an attacker only has to copy the hashed password value and use it later on to gain unauthorized entry without ever learning the actual password.

An even stronger authentication method uses the password to modify a shared secret between the client and server, but never allows the password in any form to go across the network. This is the basis for the Challenge Handshake Authentication Protocol (CHAP), the remote logon process used by Windows NT.

As suggested above, Windows NT passwords are stored in a security file on a server as a 16-byte hash value. In truth, Windows NT stores two hashes; a weak Smart Generator Hack v4.1 crack serial keygen based upon the old LAN Manager (LanMan) scheme and the newer NT hash. When a user logs on to a server from a remote workstation, the user is identified by the username, sent across the network in plaintext (no worries here; it's not a secret anyway!). Smart Generator Hack v4.1 crack serial keygen server then generates a 64-bit random number and sends it to the client (also in plaintext). This number is the challenge.

Using the LanMan scheme, the client system then encrypts the challenge using DES. Recall that DES employs a 56-bit key, acts on a 64-bit block of data, and produces a 64-bit output. In this case, the 64-bit data block is the random number. The client actually uses three different DES keys to encrypt the random number, producing three different 64-bit outputs. The first key is the first seven bytes (56 bits) of the password's hash value, the second key is the next seven bytes in the password's hash, and the third key is the remaining two bytes of the password's hash concatenated with five zero-filled bytes. (So, for the example above, the three DES keys would be 60771b22d73c34, bd4a290a79c8b0, and 9f180000000000.) Each key is applied to the random number resulting in three 64-bit outputs, which comprise the response. Thus, the server's 8-byte challenge yields a 24-byte response from the client and this is all that would be seen on the network. The server, Smart Generator Hack v4.1 crack serial keygen, for its part, does the same calculation to ensure that the values match.

There is, however, a significant weakness to this system. Specifically, the response is generated in such a way as to effectively reduce 16-byte hash to three smaller hashes, of length seven, seven, and two, respectively. Thus, a password cracker has to break at most a 7-byte hash. One Windows NT vulnerability test program that I used in the past reported passwords that were "too short," defined as "less than 8 characters." When I asked how the program knew that passwords were too short, the software's salespeople suggested to me that the program broke the passwords to determine their length. This was, in fact, not the case at all; all the software really had to do was to look at the last eight bytes of the Windows NT LanMan hash to see that the password was seven or fewer characters.

Consider the following example, showing the LanMan hash of two different short passwords (take a close look at the last 8 bytes):

AA: 89D42A44E77140AAAAD3B435B51404EE
AAA: 1C3A2B6D939A1021AAD3B435B51404EE

Note that the NT hash provides no such clue:

AA: C5663434F963BE79C8FD99F535E7AAD8
AAA: 6B6E0FB2ED246885B98586C73B5BFB77

It is worth noting that the discussion above describes the Microsoft version of CHAP, or MS-CHAP (MS-CHAPv2 is described in RFC 2759). MS-CHAP assumes that it is working with hashed values of the password as the key to encrypting the challenge. More traditional CHAP (RFC 1994) assumes that it is starting with passwords in plaintext. The relevance of this observation is that a CHAP client, for example, cannot be authenticated by an MS-CHAP server; both client and server must use the same CHAP version.

5.2. Diffie-Hellman Key Exchange

Diffie and Hellman introduced the concept of public key cryptography. The mathematical "trick" of Diffie-Hellman key exchange is that it is relatively easy to compute exponents compared to computing discrete logarithms. Diffie-Hellman allows two parties — the ubiquitous Alice and Bob — to generate a secret key; they need to exchange some information over an unsecure communications channel to perform the calculation but an eavesdropper cannot determine the shared secret key based upon this information.

Diffie-Hellman works like this. Alice and Bob start by agreeing on a large prime number, N. They also have to choose some number G so that G<N.

There is actually another constraint on G, namely that it must be primitive with respect to N. Primitive is a definition that is a little beyond the scope of our discussion but basically G is primitive to N if the set of N-1 values of Gi mod N for i = (1,N-1) are all different, Smart Generator Hack v4.1 crack serial keygen. As an example, Smart Generator Hack v4.1 crack serial keygen, 2 is not primitive to 7 because the set of powers of 2 from 1 to 6, mod 7 (i.e., 21 mod 7, 22 mod 7. ., 26 mod 7) = {2,4,1,2,4,1}. On the other hand, 3 is primitive to 7 because the set of powers of 3 from 1 to 6, mod 7 = {3,2,6,4,5,1}.

(The definition of primitive introduced a new term to some readers, namely mod. The phrase x mod y (and read as written!) means "take the remainder after dividing x by y." Thus, 1 mod 7 = 1, 9 mod 6 = 3, and 8 mod 8 = 0. Read more about the modulo function in the appendix.)

Anyway, either Alice or Bob selects N and G; they then tell the other party what the values are. Alice and Bob then work independently (Figure 9):


  1. Choose a large random number, XA < N, Smart Generator Hack v4.1 crack serial keygen. This is Alice's private key.
  2. Compute YA = GXA mod N, Smart Generator Hack v4.1 crack serial keygen. This is Alice's public key.
  3. Exchange public key with Bob.
  4. Compute KA = YBXA mod N

  1. Choose a large random number, XB < N. This is Bob's private key.
  2. Compute YB = GXB mod N. This is Bob's public key.
  3. Exchange public key with Alice.
  4. Compute KB = YAXB mod N
FIGURE 9: Diffie-Hellman key exchange model.

Note that XA and XB are kept secret while YA and YB are openly shared; these are the private and public keys, respectively. Based on their own private key and the public key learned from the other party, Alice and Bob have computed their secret keys, KA and KB, respectively, which are equal to GXAXB mod N.

Perhaps a small example will help here. Although Alice and Bob will really choose large values for N and G, I will use small values for example only; let's use N=7 and G=3, as shown in Figure 10.


  1. Choose private key; XA = 2
  2. Compute public key; YA = 32 mod 7 = 2
  3. Exchange public key with Bob
  4. KA = YBXA mod N = 62 mod 7 = 1

  1. Choose private key; XB = 3
  2. Compute public key; YB = 33 mod 7 = 6
  3. Exchange public key with Alice
  4. KB = YAXB mod N = 23 mod 7 = 1
FIGURE 10: Diffie-Hellman key Smart Generator Hack v4.1 crack serial keygen example.

In this example, then, Alice and Bob will both find the secret key 1 which is, indeed, 36 mod 7 (i.e., GXAXB = 32x3). If an eavesdropper (Eve) was listening in on the information exchange between Alice and Bob, she would learn G, N, YA, and YB which is a lot of information but insufficient to compromise the key; as long as XA and XB remain unknown, K is safe. As stated above, calculating Y = GX is a lot easier than finding X = logG Y.

A short digression on modulo arithmetic. In the paragraph above, we noted that 36 mod 7 = 1. This can be confirmed, of MRT Dongle 3.60 Crack Archives, by noting that:

36 = 729 = 104*7 + 1

There is a nice property of modulo arithmetic, however, that makes this determination a little easier, namely: (a mod x)(b mod x) = (ab mod x). Therefore, one possible shortcut is to note that 36 = (33)(33), Smart Generator Hack v4.1 crack serial keygen. Therefore, 36 mod 7 = (33 mod 7)(33 mod 7) = (27 mod 7)(27 mod 7) = 6*6 mod 7 = 36 mod 7 = 1.

Diffie-Hellman can also be used to allow key sharing amongst multiple users. Note again that the Diffie-Hellman algorithm is used to generate secret keys, not to encrypt and decrypt messages.

5.3. RSA Public Key Cryptography

Unlike Diffie-Hellman, RSA can be used for key exchange as well as digital signatures and the encryption of small blocks of data. Today, RSA is primarily used to encrypt the session key used for secret key encryption (message integrity) or the message's hash value (digital signature), Smart Generator Hack v4.1 crack serial keygen. RSA's mathematical hardness comes from the ease in calculating large numbers and the difficulty in finding the prime factors of those large numbers. Although employed with numbers using hundreds of digits, the math behind RSA is relatively straight-forward.

To create an RSA public/private key pair, here are the basic steps:

  1. Choose two prime numbers, p and q. From these numbers you can calculate the modulus, n = pq.
  2. Select a third number, e, that is relatively prime to (i.e., it does not divide evenly into) the product (p-1)(q-1). The number e is the public exponent.
  3. Calculate an integer d from the quotient (ed-1)/[(p-1)(q-1)]. The number d is the private exponent.

The public key is the number pair (n,e), Smart Generator Hack v4.1 crack serial keygen. Although these values are publicly known, it is computationally infeasible to determine d from n and e if p and q are large enough.

To encrypt a message, M, with the public key, create the ciphertext, C, using the equation:

The receiver then decrypts the ciphertext with the private key using the equation:

Now, this might look a bit complex and, indeed, the mathematics does take a lot of computer power given the large size of the numbers; since p and q may be 100 digits (decimal) or more, d and e will be about the same size and n may be over 200 digits. Nevertheless, a simple example may help. In this example, Smart Generator Hack v4.1 crack serial keygen, the values for p, q, e, and d are purposely chosen to be very small and the reader will see exactly how badly these values perform, but hopefully the algorithm will be adequately demonstrated:

  1. Select p=3 and q=5.
  2. The modulus n = pq = 15.
  3. The value e must be relatively prime to (p-1)(q-1) = (2)(4) = 8. Select e=11.
  4. The value d must be chosen so that (ed-1)/[(p-1)(q-1)] is an integer. Thus, the value (11d-1)/[(2)(4)] = (11d-1)/8 Smart Generator Hack v4.1 crack serial keygen be an integer. Calculate one possible value, d=3.
  5. Let's suppose that we want to send a message — maybe a secret key — that has the numeric value of 7 (i.e., M=7). [More on this choice below.]
  6. The sender encrypts the message (M) using the public key value (e,n)=(11,15) and computes the ciphertext (C) with the formula C = 711 mod 15 = 1977326743 mod 15 = 13.
  7. The receiver Smart Generator Hack v4.1 crack serial keygen the ciphertext using the private key value (d,n)=(3,15) and computes the plaintext with the Forza Horizon 2 License Key crack serial keygen M = 133 mod 15 = 2197 mod 15 = 7.

I choose this trivial example because the value of n is so small (in particular, the value M cannot exceed Smart Generator Hack v4.1 crack serial keygen. But here is a more realistic example using larger d, e, and n values, as well as a more meaningful message; thanks to Barry Steyn for permission to use values from his How RSA Works With Examples page.

Let's say that we have chosen p and q so that we have the following value for n:


Let's also suppose that we have selected the public key, e, and private key, d, as follows:



Now suppose that our message (M) is the character string "attack at dawn" which has the numeric value (after converting the ASCII characters to a bit string and interpreting that bit string as a decimal number) of 1976620216402300889624482718775150.

The encryption phase uses the formula C = Me mod n, so C has the value:


The decryption phase uses the formula M = Cd mod n, so M has the value that matches our original plaintext:


This more realistic example gives just a clue as to how large the numbers are that are used in the real world implementations. RSA keylengths of 512 and 768 bits are considered to be pretty weak. The minimum suggested RSA key is 1024 bits; 2048 and 3072 bits are even better.

As an aside, Adam Back ( wrote a two-line Perl script to implement RSA. It employs dc, an arbitrary precision arithmetic package that ships with most UNIX systems:

Источник: []


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This is a listing of all casks available from the cask tap via the Homebrew package manager for macOS.

0-ad0 A.D.0.0.25b-alpha
010-editor010 Editor12.0.1
1password-cli1Password CLI1.12.3
360safe360 Total Security1.2.6
3dgenceslicer3DGence Slicer3.0.0,4.0
4k-slideshow-maker4K Slideshow Maker2.0.1
4k-stogram4K Stogram3.4.3
4k-video-downloader4K Video Downloader4.18.5
4k-video-to-mp34K Video to MP33.0.1
4k-youtube-to-mp34K YouTube to MP34.3.5
8bitdo-ultimate-software8BitDo Ultimate Software2.0.4
8x8-meet8x8 Meet0.3.8.1
a-better-finder-attributesA Better Finder Attributes7.17
a-better-finder-renameA Better Finder Rename11.39
a-slower-speed-of-lightA Slower Speed of Light2020
ableton-live-introAbleton Live Intro11.0.12
ableton-live-liteAbleton Live Lite11.0.12
ableton-live-standardAbleton Live Standard11.0.12
ableton-live-suiteAbleton Live Suite11.0.12
accordanceAccordance Bible Software13.3.2
accuricsAccurics CLI1.0.27
ace-linkAce Link1.9.0
acquia-devAcquia Dev Desktop2.2021.01.14
acronis-true-imageAcronis True Image2021
actual-odbc-packActual ODBC Driver Packlatest
adguard-vpnAdguard VPN1.1.0.167
adobe-acrobat-proAdobe Acrobat Pro DC21.007.20099
adobe-acrobat-readerAdobe Acrobat Reader DC21.007.20099
adobe-airAdobe AIR33.1.1.674
adobe-connectAdobe Connect11,2021.9.28
adobe-creative-cloudAdobe Creative Cloud5.6.0.788
adobe-creative-cloud-cleaner-toolAdobe Creative Cloud Cleaner Tool4.3.0.190
adobe-digital-editionsAdobe Digital Editions4.5.11
adobe-dng-converterAdobe DNG Converter14.0
adoptopenjdkAdoptOpenJDK Java Development Kit16.0.1,9
advancedrestclientAdvanced REST Client16.0.1
aerialAerial Screensaver2.3.3
aexol-remote-mouseAexol Remote Mouse1.3,5
affinity-designerAffinity Designer1.10.4
affinity-photoAffinity Photo1.10.4
affinity-publisherAffinity Publisher1.10.4
after-dark-classicAfter Dark Classic Set1.0
aimersoft-video-converter-ultimateAimersoft Video Converter Ultimate11.6.6.1
aio-creator-neoAIO CREATOR NEO2.10.2
air-connectAir Connect2.0.1,26526
air-video-server-hdAir Video Server HD2.3.0-beta1u1,202.0902
airdisplayAir Display3.4.2,26581
airmediaCrestron AirMedia4.1.2
aja-system-testAJA System Test2.1.0
aladinAladin Desktop11.024
aleo-studioAleo Studio0.14.0
aleph-oneAleph One20210408
alinof-timerAlinof Timer4.0.0
alipay-development-assistantAlipay Development Assistant1.0.7
all-in-one-messengerAll-in-One Messenger2.5.0
altair-graphql-clientAltair GraphQL Client4.1.0
amadeus-proAmadeus Pro2.8.8
amazon-chimeAmazon Chime4.39.8605
amazon-musicAmazon Music8.8.1.2303,23031025_a0.
amazon-photosAmazon Drivelatest
amazon-workdocsAmazon WorkDocs1.2.200340.0,99
amazon-workdocs-driveAmazon WorkDocs Drivelatest
amazon-workspacesAmazon Workspaces4.0.4.2126
amd-power-gadgetAMD Power Gadget0.7
anacondaContinuum Analytics Anaconda2021.11
ananas-analytics-desktop-editionAnanas Analytics Desktop Edition0.9.0
android-commandlinetoolsAndroid SDK Command-line Tools7583922
android-file-transferAndroid File Transfer5071136
android-messagesAndroid Messages Desktop3.1.0
android-ndkAndroid NDK22b
android-platform-toolsAndroid SDK Platform-Tools31.0.3,e8b2b4cbe47c728.
android-studioAndroid Studio2020.3.1.25
angry-ip-scannerAngry IP Scanner3.7.6
anka-build-cloud-controller-and-registryAnka Build Cloud Controller & Registry1.20.0,035872f5
anka-build-cloud-registryAnka Build Cloud Registry1.20.0,c83f487d
anka-virtualizationAnka Virtualization2.5.3.135
ankamaAnkama Launcher3.5.5.13025
anonymousvpnAnonymous VPN2.0.1.14
another-redis-desktop-managerAnother Redis Desktop Manager1.4.9
ansible-dkAnsible DK1.2.0,3
apache-couchdbApache CouchDB3.2.0
apache-directory-studioApache Directory Studio2.0.0.v20210717-M17
apk-icon-editorAPK Icon Editor2.2.0
app-cleanerNektony App Cleaner & Uninstaller7.4.4,840
appcleanerFreeMacSoft AppCleaner3.6.0,4070
appgate-sdp-clientAppGate SDP Client for macOS5.5.0
appiumAppium Server Desktop GUI1.22.0
apple-eventsApple Events1.6
apple-juiceApple Juice2020.12.0
appstore-quickviewApp.Store Quickview1.1.1
aptanastudioAptana Studio3.7.2.201807301111
aptibleAptible Toolbelt0.19.1,20210802230457,251
aqua-data-studioAquafold Aqua Data Studio22.0.1
araxis-mergeAraxis Merge2021.5644
aria-maestosaAria Maestosa1.4.13
ariangAriaNg Native1.2.3
ark-desktop-walletArk Desktop Wallet2.9.5
arq-cloud-backupArq Cloud Backup1.5
art-directors-toolkitArt Directors Toolkit5.5.1
asc-timetablesaSc TimeTables2020.7.1
asset-catalog-tinkererAsset Catalog Tinkerer2.5.1
astah-professionalChange Vision Astah Professional8.4.1,827bdf
astah-umlChange Vision Astah UML8.4.1,827bdf
astro-command-centerASTRO Command Centerlatest
astropad-studioAstropad Studio3.7.0,3219
atomGithub Atom1.58.0
atomic-walletAtomic Wallet2.34.0
au-labAU Lab2.3
audio-hijackAudio Hijack3.8.8
audiobook-builderAudiobook Builder2.1.4
audiogridder-pluginAudioGridder Plugin1.1.1
audiogridder-serverAudioGridder Server1.1.1
auralAural Player3.3.1
aurora-hdrAurora HDR1.0.1,6438
authyAuthy Desktop1.9.0
autodesk-fusion360Autodesk Fusion 360latest
avast-secure-browserAvast Secure Browser95.0.1324.70
avast-secureline-vpnAvast SecureLine VPN2.1.4
avast-securityAvast Security4.0,2.0
avg-antivirusAVG Antivirus for Mac4.0,2.0
aviatrix-vpn-clientAviatrix VPN Client2.14.14
avidcodecsleAvid Codecs LE2.7.6,3B39AE16
avira-antivirusAvira Antiviruslatest
awips-pythonAWIPS Pythonlatest
aws-vpn-clientAWS Client VPN1.4.0
axure-rpAxure RP10.0.0.3851
azure-data-studioAzure Data Studio1.33.1
backblaze-downloaderBackblaze Downloader7.0.2.474
background-musicBackground Music0.3.2
badlion-clientBadlion Client3.5.5
baiduinputBaidu Inputlatest
baidunetdiskBaidu NetDisk4.2.4
balance-lockBalance Lock1.1,568
balsamiq-wireframesBalsamiq Wireframes4.3.3
banking-4Banking 47.6.2,7777
baseMenial Base2.5.2,20502
battery-buddyBattery Buddy1.0.3,11
battery-reportBattery Report1.2.0
battle-netBlizzard Battle.netlatest
bbc-iplayer-downloadsBBC iPlayer Downloads2.13.5
beaker-browserBeaker Browser1.1.0
beekeeper-studioBeekeeper Studio2.1.5
bespokeBespoke Synth1.1.0
better-window-managerBetter Window Manager1.14,15
beyond-compareBeyond Compare4.4.0.25886
big-mean-folder-machineBig Mean Folder Machine2.43
billings-proBillings Pro1.7.18,37803
binary-ninjaBinary Ninja2.2.2487
biopassfidoBioPass FIDO2 Manager2.1.0
bit-fiddleBit Fiddle1.4.2
bit-slicerBit Slicer1.7.11
bitcoin-coreBitcoin Core22.0
bitwig-studioBitwig Studio4.0.7
black-inkBlack Ink2.1.9,2788
blackhole-16chBlackHole 16ch0.2.10
blackhole-2chBlackHole 2ch0.2.10
blackhole-64chBlackHole 64ch0.2.10
blender-benchmarkBlender Open Data Benchmark2.0.4
blheli-configuratorBLHeli Configurator1.2.0
bliskBlisk Browser16.1.94.111
blobby-volley2Blobby Volley 21.0
blu-ray-playerMacgo Mac Blu-ray Player3.3.21,211028_0110
blu-ray-player-proMacgo Mac Blu-ray Player Pro3.3.21,211028_0110
boincBerkeley Open Infrastructure for Network Computing7.16.19
bome-networkBome Network1.4
bonitastudiocommunityBonita Studio Community Edition2021.2-u0
bonjour-browserBonjour Browser1.5.6
boom-3dBoom 3D1.3.12,101.3.12012
bootstrap-studioBootstrap Studio5.8.5
bot-framework-emulatorMicrosoft Bot Framework Emulator4.14.1
box-driveBox Drive2.19.294
box-notesBox Notes1.4.0
box-syncBox Sync4.0.8009
box-toolsBox Toolslatest
boxy-suiteBoxy Suitelatest
brain-workshopBrain Workshop4.8.4
brewservicesmenubarBrew Services Menubar4.0
brightness-syncBrightness Sync2.3.2
browserstacklocalBrowserStack Local Testing3.3.1
btcpayserver-vaultBTCPayServer Vault2.0.1
burp-suiteBurp Suite Community Edition2021.10
burp-suite-professionalBurp Suite Professional2021.10
buttBroadcast Using This Tool0.1.32
c0re100-qbittorrentqBittorrent Enhanced Edition4.3.9.10
calendar-366Calendar 366 II2.11,3403
calmly-writerCalmly Writer2.0.36
camedCAM Editor3.2.2
camera-liveCamera Live11
camo-studioCamo Studio1.5.1,5687
camunda-modelerCamunda Modeler4.11.1
carbon-copy-clonerCarbon Copy Cloner6.0.5.7252
cave-storyPixel Cave Story0.1.0,2
ccleanerPiriform CCleaner1.18.30
cd-tocd to3.1
cernboxCERNBox Client2.8.2.4410
chameleon-ssd-optimizerChameleon SSD optimizer0.9.9g
chatmate-for-facebookChatMate for Facebook4.3.1,482:1537946763
chatmate-for-whatsappChatMate for WhatsApp4.3.1,482:1537891987
chef-workstationChef Workstation21.11.679
chiaChia Blockchain1.2.11
chrome-devtoolsChrome DevTools1.1.0
chrome-remote-desktop-hostChrome Remote Desktop89.0.4389.25
chronosChronos Timetracker5.0.1
cinc-workstationCinc Workstation21.11.679
circuitjs1Falstad CircuitJS9.3.2
cisco-jabberCisco Jabber20210902045804
cisco-proximityCisco Proximitydesktop-3.1.0
cisdem-data-recoveryCisdem Data Recovery6.4.0
cisdem-document-readerCisdem Document Reader5.4.0
cisdem-pdf-converter-ocrCisdem PDF Converter OCR7.5.0
cisdem-pdfmanagerultimateCisdem PDFManagerUltimate3.2.0
cityofzion-neonNeon Wallet2.10.0
ckanComprehensive Kerbal Archive Network1.30.4
clash-for-windowsClash for Windows0.18.9
classroom-assistantGitHub Classroom Assistant2.0.4
classroom-mode-for-minecraftClassroom Mode for Minecraft1.81
cleanappSynium Software CleanApp5.1.3
cleanmymacCleanMyMac X4.9.2,40902.0.2111031749
clicker-for-netflixClicker for Netflix2.12.0
clicker-for-youtubeClicker for YouTube1.19,52
clip-studio-paintClip Studio Paint1.11.4
clock-barClock Bar1.0,1801968
clock-signalClock Signal2021-08-09
clocksaverClock.saver screensaver0.7.0
clone-heroClone Hero0.23.2.2
clonkClonk Rage1.0
cloud-pbxCloud PBX22.9.20.159
cloudflare-warpCloudflare WARP1.6.27.0,20211004.9
cloudmounterEltima CloudMounter3.10,694
clover-configuratorClover Configurator5.18.3.0
cncnetCnCNet: Classic Command & Conquer2.1
coarchicoArchi plugin for Archi0.8.0.202110121448
coccocCốc Cốc87.0.4280.148,87.0.148
codaPanic Coda2.7.7,217503
code-composer-studioCode Composer Studio (CCS)
code-notesCode Notes1.2.4
code42-crashplanCode42 CrashPlan8.2.1,1525200006821:77
coffitivity-offlineCoffitivity Offline1.0.2
coin-walletCoin Wallet5.1.2
coinomi-walletCoinomi Wallet1.2.4
cold-turkey-blockerCold Turkey4.3
color-oracleColor Oracle1.3.0
colorchecker-camera-calibrationColorChecker Camera Calibration2.3.0
colorpicker-developerDeveloper Color Picker1.5.4
colorpicker-materialdesignMaterial Design2.0.0
colorpicker-propickerPro Picker1.1
colorpicker-skalacolorSkala Color2.10
colorsnapperColorSnapper 21.6.4
colour-contrast-analyserColour Contrast Analyser (CCA)3.1.4
combine-pdfsCombine PDFs5.5.2
comma-chameleonComma Chameleon0.5.2
command-padCommand Pad0.1.2
command-tab-plusCommand-Tab Plus1.130,380
commander-oneCommander One3.3,3508
connectiqGarmin Connect IQ SDK4.0.6,2021-10-06,af9b9.
container-psContainer PS1.3.0
continuity-activation-toolContinuity Activation Tool2.0
core-data-editorCore Data Editor5.2
corelocationcliCore Location CLI3.2.0
corona-trackerCorona Tracker1.7.2
correttoAWS Corretto JDK17.
couchbase-server-communityCouchbase Server7.0.2
couchbase-server-enterpriseCouchbase Server7.0.2
countdownCountdown Screensaver0.1.0
cozy-driveCozy Drive3.31.0
crCool Reader3.0.56,10
create-recovery-partition-installerCreate Recovery Partition Installer1.1
crystax-ndkCrystax NDK10.3.2
cura-lulzbotCura LulzBot Edition3.6.21,ce3e47a08065c66.
cycling74-maxCycling ‘74 Max8.2.0_211012
daedalus-mainnetDaedalus Mainnet4.4.1,19369
daedalus-testnetDaedalus Testnet4.4.1,19369
dashcam-viewerDashcam Viewer3.7.0
datDat Desktop3.0.1
data-integrationPentaho Data Integration9.2.0.0-290
data-rescueData Rescue 66.0.5,6212.14.08
data-science-studioDataiku Data Science Studio9.0.1
datadog-agentDatadog Agent7.32.0-1
db-browser-for-sqliteDB Browser for SQLite3.12.2
dbeaver-communityDBeaver Community Edition21.2.5
dbeaver-enterpriseDBeaver Enterprise Edition21.2.0
dcp-o-matic-batch-converterDCP-o-matic Batch converter2.14.56
dcp-o-matic-encode-serverDCP-o-matic Encode Server2.14.56
dcp-o-matic-kdm-creatorDCP-o-matic KDM Creator2.14.56
dcp-o-matic-playerDCP-o-matic Player2.14.56
dcv-viewerNICE DCV Viewer2021.2.3776
dd-utilitydd Utility1.11
default-folder-xDefault Folder X5.6.1,4912
delicious-libraryDelicious Library3.9.3
detectx-swiftDetectX Swift1.0981
devdocsDevDocs App0.7.2
developerexcusesDeveloper Excuses Screensaver2.1.4
devolo-cockpitDevolo dLAN Cockpit5.1.6.2
devonagentDEVONagent Pro3.11.5
dhsDylib Hijack Scanner1.4.1
dictaterDictater1.2 English-German dictionary plugin2011-05-26
dingtalk-liteDingTalk Lite5.1.21
disk-arbitratorDisk Arbitrator0.8.0
disk-dietDisk Diet5.5,1474
disk-drillDisk Drill4.6.370
disk-expertDisk Expert3.6.3,361
disk-inventory-xDisk Inventory X1.3
diskmaker-xDiskMaker X9.0
djvDJV Imaging1.3.0
dmm-playerDMM Player2.1.8
dmm-player-for-chromeDMM Player for Chrome1.5.0.10
do-not-disturbDo Not Disturb1.3.0
dockerDocker Desktop4.2.0,70708
docker-toolboxDocker Toolbox19.03.1
dockmateDock Mate0.8.7,2737
doomrlDoom the Roguelike0.9.9.7
doomsday-engineDoomsday Engine2.3.1
dotnet.Net Runtime6.0.0,03e62824-4061-45.
dotnet-sdk.NET SDK6.0.100,14a45451-4cc9.
double-commanderDouble Commander0.9.10-9640
drawbotDrawBot3.128 Desktop15.7.3
dremel-slicerDremel DigiLab 3D Slicer1.2.3
drivethrurpgDriveThruRPG Library App3.1.6.0
drop-to-gifDrop to GIF1.28
dropbox-captureDropbox Capture55.0.0
dropbox-passwordsDropbox Passwords8.2.14
dropletmanagerDigitalOcean Droplets Manager0.5.0
dungeon-crawl-stone-soup-consoleDungeon Crawl Stone Soup0.27.1
dungeon-crawl-stone-soup-tilesDungeon Crawl Stone Soup0.27.1
duplicacy-web-editionDuplicacy Web Edition1.5.0
duplicate-annihilator-for-photosDuplicate Annihilator for Photoslatest
duplicate-file-finderDuplicate File Finder6.14.5,541
dwarf-fortressDwarf Fortress0.47.05
dwarf-fortress-lmpDwarf Fortress LMP (Lazy Mac Pack)0.47.05+dfhack-r1
dyalogDyalog APL18.0.40684
dyn-updaterDyn Updater5.5.0
dynamic-dark-modeDynamic Dark Mode1.5.2
dynamodb-localAmazon DynamoDB Locallatest
eagleAutodesk EAGLE9.6.2
easy-move-plus-resizeEasy Move+Resize1.4.2
eclipse-cppEclipse IDE for C/C++ Developers4.21.0,2021-09:R
eclipse-dslEclipse IDE for Java and DSL Developers4.21.0,2021-09:R
eclipse-ideEclipse IDE for Eclipse Committers4.21.0,2021-09:R
eclipse-installerEclipse Installer4.21.0,2021-09:R
eclipse-javaEclipse IDE for Java Developers4.21.0,2021-09:R
eclipse-javascriptEclipse IDE for JavaScript and Web Developers4.18.0,2020-12:R
eclipse-jeeEclipse IDE for Java EE Developers4.21.0,2021-09:R
eclipse-modelingEclipse Modeling Tools4.21.0,2021-09:R
eclipse-phpEclipse IDE for PHP Developers4.21.0,2021-09:R
eclipse-platformEclipse SDK4.21,202109060500
eclipse-rcpEclipse for RCP and RAP Developers4.21.0,2021-09:R
eclipse-testingEclipse for Testers4.18.0,2020-12:R
eddieAir VPN2.20.0
eggplanteggPlant Functional21.1.0,2101270001
elasticwolfAWS ElasticWolf Client Console5.1.7
electric-sheepElectric Sheep3.0.2
electricbinaryElectric VLSI Design System9.07
electron-api-demosElectron API Demos2.0.2
electron-cashElectron Cash4.2.5
electron-fiddleElectron Fiddle0.26.0
electronic-wechatElectronic WeChat2.0
elmedia-playerElmedia Player8.1,2848
eloston-chromiumUngoogled Chromium96.0.4664.45-1.1_x86-64
emby-serverEmby Server4.6.4.0
emclienteM Client8.2.1687
encryptrSpiderOak Encryptr2.1.0
endless-skyEndless Sky0.9.14
engine-primeEngine Prime1.6.1,5f4b42a70b
epicEpic Privacy Browser91.0.4472.114
epic-gamesEpic Games Launcher13.0.0
epilogue-operatorEpilogue Operator0.7.1
epoch-flip-clockEpoch Flip Clock Screensaver0.0.5
epubmdimporterEPUB Spotlight1.8
epubquicklookEPUB QuickLook1.8
eset-cyber-security-proESET Cyber Security Pro6.10.460.1
ethereum-walletEthereum Wallet0.11.1
eurkeyEurKEY keyboard layoutlatest
ev3-classroomEV3 Classroom1.1.1
eve-launcherEve Online1952584
exfalsoEx Falso4.4.0
expo-xdeExpo Development Environment (XDE)2.25.0
expressscribeExpress Scribe Transcription Software9.22
fabfilter-microFabFilter Micro1.22
fabfilter-oneFabFilter One3.33
fabfilter-pro-cFabFilter Pro-C2.12
fabfilter-pro-dsFabFilter Pro-DS1.16
fabfilter-pro-gFabFilter Pro-G1.26
fabfilter-pro-lFabFilter Pro-L2.07
fabfilter-pro-mbFabFilter Pro-MB1.23
fabfilter-pro-qFabFilter Pro-Q3.17
fabfilter-pro-rFabFilter Pro-R1.10
fabfilter-saturnFabFilter Saturn2.03
fabfilter-simplonFabFilter Simplon1.32
fabfilter-timelessFabFilter Timeless3.00
fabfilter-twinFabFilter Twin2.32
fabfilter-volcanoFabFilter Volcano2.32
falcon-sql-clientFalcon SQL Client4.1.0
fantasy-groundsFantasy Groundslatest
fantasy-map-generatorAzgaar's Fantasy Map Generator1.3
fauxpasFaux Pas1.7.2
fedora-media-writerFedora Media Writer4.2.2
feed-the-beastFeed the Beast202111051727,fc8797cf31
figmadaemonFigma Font Installers20
file-juicerFile Juicer4.96
filemaker-proFileMaker Pro19.3.2.206
filemonFile Monitorlatest
final-cut-library-managerArctic Whiteness Final Cut Library Manager3.90.00
final-fantasy-xiv-onlineFinal Fantasy XIVpnvdkzgk77dj10
find-any-fileFind Any File2.3.1
find-empty-foldersFind Empty Folders1.3
finereaderABBYY FineReader Pro12.1.14,1052435
fingFing Desktop2.7.1
fing-cliFing Desktop Embedded CLI5.5.2
finisher-voodooFinisher VOODOO206
firealpacaFire Alpacalatest
firebase-adminFirebase Admin1.0.1
firefoxMozilla Firefox94.0.1
firestormPhoenix Firestorm viewer for Second Life6.4.21.64531
firestormosPhoenix Firestorm viewer for OpenSim6.4.21.64531
fitbit-os-simulatorFitbit OS Simulator0.9.2
fl-studioFL Studio20.8.4.2072
flash-decompiler-trillixFlash Decompiler Trillix5.3.1301
flickr-uploadrFlickr Uploadr1.1.2,2121
flipperFacebook Flipper0.119.0
flixtoolsOpenSubtitles FlixTools Lite3.
flowsyncPolar FlowSync Software4.0.6
fluent-readerFluent Reader1.0.2
flutterFlutter SDK2.5.3
flying-carpetFlying Carpet4.1
fmeFME Desktop2021.0.3,21326
focus-boosterFocus Booster2.2.0
focusatwill[email protected]3.1.0
folding-at-home[email protected]7.6.21
font-smoothing-adjusterFont Smoothing Adjuster1.2.1
fontexplorer-x-proFontExplorer X Pro7.2.6
force-pasteForce Paste1.0.1
forticlient-vpnFortiClient VPN7.0.0.22
foxglove-studioFoxglove Studio0.22.0
foxitreaderFoxit Reader11.1.0
fpc-lazPascal compiler for Lazarus3.2.0,2.0.12
fpc-src-lazPascal compiler source files for Lazarus3.2.0-2,2.0.12
framer-xFramer X36854,1590141192
fredm-fuseFuse for Mac OS X1.5.6
free-download-managerFree Download Manager6.15.3
free-rulerFree Ruler2.0.5
free42-binaryFree42 Binary3.0.7
free42-decimalFree42 Decimal3.0.7
freedomeF-Secure Freedome2.39.6634.0
fs-uae-launcherFS-UAE Launcher3.1.43
fuseFuse Studio1.9.0
futurerestore-guiFutureRestore GUI1.94
g-desktop-suiteG Desktop Suite0.3.1
gas-maskGas Mask0.8.6
gatherGather Town0.1.6
gb-studioGB Studio1.2.2
gcc-arm-embeddedGCC ARM Embedded10.3-2021.10
gdatGenealogical DNA Analysis Tool2021r08
gdiskGPT fdisk1.0.8
geneious-primeGeneious Prime2022.0.1
geotag-photos-proGeotag Photos Pro1.9.3
get-backup-proGet Backup Pro 33.6.5,1616
get-iplayer-automatorGet iPlayer Automator1.21.12,20210729001
get-lyricalGet Lyrical3.8.1
getrasplexRasplex Installer1.0.1
ghost-browserGhost Browser2.1.3.6
ghosttileKernelpanic GhostTile15,15:1510040474
giteyeCollabNet GitEye2.2.0
githubGitHub Desktop2.9.4-24101633
gloomhaven-helperGloomhaven Helper8.4.8
gmail-notifierGmail Notifier2.1.0
go-agentGo Agent21.3.0,13067
go-serverGo Server21.3.0,13067
godotGodot Engine3.4
godot-monoGodot Engine3.4
gog-galaxyGOG Galaxy2.0.43.66a
gogsGo Git Service0.12.3
google-ads-editorGoogle Ads Editorlatest
google-analytics-opt-outGoogle Analytics Opt Out1.0.1
google-assistantGoogle Assistant Unofficial Desktop Client1.0.0
google-chromeGoogle Chrome96.0.4664.55
google-cloud-sdkGoogle Cloud SDKlatest
google-driveGoogle Drive52.0.6
google-drive-file-streamGoogle Drive File Stream44.0.14.1
google-earth-proGoogle Earth Pro7.3.4.8248
google-featured-photosGoogle Featured Photos1.0.0.208
google-japanese-imeGoogle Japanese Input Method Editorlatest
google-trendsGoogle Trends Screensaverlatest
google-web-designerGoogle Web Designer9.0.7.0
googleappengineGoogle App Engine1.9.89
gopass-uiGopass UI0.8.0
gosignGoSign Desktop1.1.7
gpg-suiteGPG Suite2021.2
gpg-suite-no-mailGPG Suite (without GPG Mail)2021.2
gpg-suite-pinentryGPG Suite Pinentry2021.2
gpg-syncGPG Sync0.3.6
gradsGrid Analysis and Display System2.2.1
graphiqlGraphiQL App0.7.2
graphql-ideGraphQL IDE1.1.1
graphql-playgroundGraphQL Playground1.8.10
grid-clockGrid Clock Screensaver0.0.5
guild-wars2Guild Wars 21.0
guitar-proGuitar Pro7.5
gureumkim구름 입력기1.11.1
gyazoNota Gyazo GIF3.9.0
ha-menuHA Menu2.5.1
hacker-menuHacker Menu1.1.5
hancom-wordHacom Word Processor 2014 VPlatest
haptic-touch-barHaptic Touch Bar2.4.0,1540815050
heavenHeaven Benchmark4.0
heimdall-suiteHeimdall Suite1.4.0
hermit-crabHermit Crab1.0.3
hex-fiendHex Fiend2.14.1
hiarcs-chess-explorer(Deep) HIARCS Chess Explorer1.11
hiddenbarHidden Bar1.8
hma-pro-vpnHMA! Pro VPNlatest
hocus-focusHocus Focus1.3,2131
holavpnHola VPN2.38,1.190.307
home-assistantHome Assistant2021.11.1,2021.266
home-inventoryHome Inventory3.8.5,20201209
hontohonto view app6.44.0,20200124
hopper-debugger-serverHopper Debugger Server2.7
horosHoros – Free, open medical image viewer4.0.0
hoststoolHosts tool for Mac2.7.0
hp-eprintHP ePrint2.5.0
hp-primeHP Prime2020_01_16
hstrackerHearthstone Deck Tracker2.0.2
http-toolkitHTTP Toolkit1.5.0
hypeTumult Hype4.1.7,736
ibackup-vieweriBackup Viewer4.2360
ibm-aspera-connectIBM Aspera Connect3.11.2.63
ibm-cloud-cliIBM Cloud CLI2.2.0
iccInternational Chess Club1.0,7648
icloud-controliCloud Control1.2.0
icons8Icons8 App5.7.4,57400
id3-editorID3 Editor1.28.50
idafreeIDA Free7.6
igvIntegrative Genomics Viewer (IGV)2.11.3
ilok-license-manageriLok License Manager5.4.1,3455
ilya-birman-typography-layoutIlya Birman Typography Layout3.7
image-toolImage Tool1.4.1
imoImo Messanger1.2.1
inav-configuratorINAV Configurator3.0.2
indigoIndigo Domotics7.4.1
infoflowBaidu Hi2.3.9.5,2021103019
install-disk-creatorInstall Disk Creator1.5
instatus-outInstatus Out1.0.8
intel-haxmIntel HAXM7.7.0
intel-power-gadgetIntel Power Gadget3.7.0,b7b1b3e1dffd9b20
intel-psxe-ce-c-plus-plusIntel Parallel Studio XE Composer Edition for C++2020.2.899,16768
intellij-ideaIntelliJ IDEA Ultimate2021.2.3,212.5457.46
intellij-idea-ceIntelliJ IDEA Community Edition2021.2.3,212.5457.46
internxt-driveInternxt Drive1.4.1
intune-company-portalCompany Portal2.12.210101
invisionsyncInVision Sync1.9.1,692
invisor-liteInvisor Lite3.17,989.211020
ios-app-signeriOS App Signer1.13.1
ios-consoleiOS Console1.0.2,55
ios-saveriOS 8 Lockscreen for OSXlatest
iota-walletIOTA Wallet2.5.7
ip-in-menu-barIP in menu bar4.
ipa-managerIPA Palette2.3.2,2020.01.26
ipfsIPFS Desktop0.17.0
iphoto-library-manageriPhoto Library Manager4.2.7,954
ipremoteutilityFlanders IP Remote Utility1.8.7
irccloudIRCCloud Desktop0.16.0
iridiumIridium Browser2021.10.95
irpf2021IRPF 20211.9
ishowu-instantiShowU Instant1.4.8,1383
istat-menusiStats Menus6.61
istat-serveriStat Server3.03
isyncriSyncr Desktop6.1.0
itunes-produceriTunes Producer3.1.2
itunes-volume-controliTunes Volume Control1.6.8
ivideonserverIvideon Client3.10.1
jaxx-libertyJaxx Blockchain Wallet2.6.5
jclasslib-bytecode-viewerjclasslib bytecode viewer6.0.1
jdk-mission-controlJDK Mission Control8.1.0,07
jedit-omegaJedit Ω2.43
jenkins-menuJenkins Menu0.2.0
jetCodeship Jet2.11.0
jetbrains-spaceJetBrains Space2021.3.2
jetbrains-toolboxJetBrains Toolbox1.22,1.22.10774
jgrennison-openttdJGR's OpenTTD Patchpack0.44.0
jitsi-meetJitsi Meet2021.11.2
jokerJoker iOS kernelcache handling utilitylatest
jumpJump Desktop8.8.16,80816
jupyter-notebook-qlJupyter Notebook Quick Look0.2
jupyter-notebook-viewerJupyter Notebook Viewer0.1.4
jupyterlabJupyterLab App3.2.3-1
kapitainsky-rclone-browserRclone Browser1.8.0,a0b66c6
karabiner-elementsKarabiner Elements13.7.0
katalon-studioKatalon Studio8.1.0
keep-itKeep It1.11.6,9180
keeper-password-managerKeeper Password Manager16.3.2,202111122144
kekaexternalhelperKeka External Helper1.1.1,1.2.7
kext-updaterKext Updater3.9.7,397
kext-utilityKext Utility2.6.6
key-codesKey Codes2.2.1,2027
keyboard-cleanerKeyboard Cleaner1.2
keyboard-lockKeyboard Lock1.0
keyboard-maestroKeyboard Maestro10.0.1,1001