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Contact Us - keygenfile

Click the "Generate" button (or a similar button) to create a key. Open the program you installed. When you are prompted to supply a serial number and product. A key generator (key-gen) is a computer program that generates a product licensing key, such as a serial number, necessary to activate for use of a software. A crack is a supplementary software that must be performed after the primary software has been installed. The crack instructs the users to look in the File.

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Keygen.exe: what it is, how it works, and how to remove it

Aleksandar Ognjanovic
by Aleksandar Ognjanovic

Troubleshooting Expert

Aleksandar's main passion is technology. With a solid writing background, he is determined to bring the bleeding edge to the common user. With a keen eye, he always spots the next big thing surrounding... Read more

  • Keygen.exe is a pirated software that can be carrying Trojans and malware. Its purpose is to create license keys for users in order to illegally register the software.
  • This hack tool is barely used nowadays, but, still present within the pirating community. 
  • To get rid of it, you can try to scan your PC with a reliable Windows 10 built-in security tool.
  • Another great solution is to use dedicated malware software to scan and remove any malware.
remove keygen.exe
ESET Antivirus comes with all the security tools that you may ever need to protect your data and privacy, including:
  • Zero-day malware protection
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  • Banking-level encryption
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  • Advanced anti-malware protection

An antivirus program needs to be fast, efficient, and cost-effective, and this one has them all.

Pirated versions of software often come accompanied by security threats. Most of the time, they require secondary applications to run or register.

One of those is Keygen.exe, a simple application that can bring a bag full of malware or spyware right at your front door.

Our intention today is to explain what Keygen.exe is, how it can affect your PC, and how to deal with it. If you’re concerned about the negative effects, look below for a detailed explanation.

Named also Key Generator, is a hack tool but not malware per se. It mostly comes with the pirated software and its main use is to create license keys so users can illegally register the desired application.

Even though this tool isn’t malware by itself, it’s still illegal for obvious reasons, and it can be carrying Trojan, viruses or data-stealing keyloggers that will damage your PC.

In comparison to cracks, Keygen doesn’t modify any parts of the program. By modifying certain security algorithms, it enables any random license key to work.

After you’re prompted to insert the license key during the installation, this hack application will generate a code so you can manually insert it.

How can I remove the Keygen.exe malware?

1. Perform a quick virus scan

  1. Press the Windows Key + I to open the Settings app.
  2. Go to the Update & Security section.
  3. Select Windows Security from the left panel.
  4. In the right panel, click on Open Windows Security.
  5. Select the Virus & threat protection, and click on Quick scan.

If you’re keen to get rid of Keygen and other related files, you can do it by deleting it manually. Just completely delete the downloaded files and that should be it.

On the other hand, there’s a chance that your system is already infected. Therefore, any infections detected may mean you will have some data loss.

Want to know how to scan your PC with Windows Defender Offline? Check our detailed guide for more info!

2. Use a third-party antimalware software for a deep scan

Making sure that your PC is protected from the effects of the malware presence is of utmost importance. In this case, we suggest a full scan with a modern antivirus solution.

This antivirus is a next-generation security solution that is designed to be fast, stay out of the way, and keep your digital life safe.

It offers complete protection against viruses, worms, spam, spyware, and other malware. This AI-powered antivirus is continually improving itslef.

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To optimally protect your PC from malware and tools like Keygen, rely on one of the best antiviruses.

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Even though Keygen.exe isn’t malware, in more than 50% of detections, it carries some kind of malicious software. That’s a risk certain users are willing to take, but we don’t advise you to do that.

We also recommend you keep your computer safe by installing the recommended antivirus or any of these great malware remover tools.

Don’t forget to tell us whether one of the solutions gets you through the problem. If you have any other suggestions or questions, feel free to leave them in the comments section below.

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Источник: []
Removes all keys belonging to the specified (with optional port number) from a known_hosts file. This option is useful to delete hashed hosts (see the option above).
Print the SSHFP fingerprint resource record named for the specified public key file.
Certify (sign) a public key using the specified CA key. Please see the CERTIFICATES section for details.

When generating a KRL, specifies a path to a CA public key file used to revoke certificates directly by key ID or serial number. See the KEY REVOCATION LISTS section for details.

Let your team focus on product, not in-house licensing and distribution.

Easily add license key validation, entitlements, and device activation to your business's desktop apps, server applications, on-premise software, and other products using our software licensing API.

"Licensing was planned to make up at least 25% percent of planned dev time for our product so it's awesome to see that we've been able to cut it down to 2.5% with Keygen." – Ranorex

Free during development, no upfront commitment

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Demo of the Keygen admin dashboard

Developer time is expensive

Making it more productive is a no-brainer

  • checkSay "no" to hidden maintenance costs. Skip the expensive up-front and ongoing costs of building an in-house licensing solution. Save your business development time and money with our ready-to-go software licensing and distribution API.
  • checkScale your operations. Effortlessly go from hundreds of users, to thousands, to hundreds of thousands and beyond. We'll handle the infrastructure so your team can focus on product.
  • checkGet to market faster. Quickly and securely integrate our ready-to-go cloud-based developer APIs into any software product, on any operating system.
Licensing in 2021: Build vs Buy

Bring your own programming language

Quickly implement Keygen's API in any programming language.

A better answer to Build vs. Buy

Businesses of all sizes face the question of whether to build or buy a product licensing solution. Keygen's developer APIs give you a better option that will save your business time and money.

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    Reduce the up-front development and ongoing maintenance costs of an in-house solution.

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    Maintain the flexibility of an in-house solution, but leave the hard stuff to us.

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    Developer support and integration services by our licensing experts.

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    Building blocks for implementing countless licensing models.

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    Clear developer documentation covering how to integrate Keygen.

"Using Keygen saved me the trouble of building and maintaining my own licensing server and strategy. It is easy to work with, reliable, and affordable." – GuideGuide

Create an Account

"Saved time, money and made our customers happy. My staff are able to manage licenses with ease." – Anthony O.


  • What licensing models are supported?

    Keygen supports almost any licensing model you can think of: perpetual licenses, timed licenses, machine and VM leasing, subscription-based models, concurrency-based models, single machine-locked licenses, floating licenses, feature- and entitlement-based licensing. You can even do a combination of most of these models to craft your own, unique license policies.

  • Is data within Keygen secure?

    Yes. We strive to ensure that the data stored within Keygen is as secure as possible. We never store passwords as plain text—they are always hashed and salted securely using . All connections to our APIs are encrypted over TLS, i.e. we encrypt "in transit", our databases are encrypted, i.e. we encrypt "at rest", and all of our data backups are encrypted. Want to learn more? Check out our security page.

  • Where can I monitor Keygen's uptime?

    We strive to provide the highest uptime possible for our customers through a distributed system hosted on battle-tested infrastructure. You can monitor uptime and average response time for each of Keygen's services from our status page.

  • Does Keygen handle distribution?

    Yes! Using Keygen Dist, you can distribute your products to licensed users and even provide auto-updates using industry standard frameworks such as Sparkle, NSIS, Squirrel.Mac, Squirrel.Windows, and even updates for WordPress plugins and themes.

  • Does Keygen work offline?

    Yes, we support several methods of cryptographically signing or encrypting license keys, which can be verified in offline environments. For more information, check out our API reference, or reach out to our technical support.

  • Can I ask a different question?

    Of course. Ask away.

"Keygen has flexible license management options backed by great customer support. Keygen is enabling us to very quickly get licensing off the ground for a reasonable price." – Mining & Metals

Источник: []

How to use ssh-keygen to generate a new SSH key

This page is about the OpenSSH version of . For Tectia SSH, see here. If you wish to generate keys for PuTTY, see PuTTYgen on Windows or PuTTYgen on Linux.



What Is ?SSH Keys and Public Key AuthenticationCreating an SSH Key Pair for User AuthenticationChoosing an Algorithm and Key SizeSpecifying the File NameCopying the Public Key to the ServerAdding the Key to SSH AgentCreating Host KeysUsing X.509 Certificates for Host AuthenticationUsing OpenSSH's Proprietary CertificatesKey Management Requires AttentionMake Sure There Is Enough RandomnessGeneral Purpose SystemsEmbedded Devices and Internet of ThingsCommand and Option Summary

What Is ?

is a tool for creating new authentication key pairs for SSH. Such key pairs are used for automating logins, single sign-on, and for authenticating hosts.

SSH Keys and Public Key Authentication

The SSH protocol uses public key cryptography for authenticating hosts and users. The authentication keys, called SSH keys, are created using the program.

SSH introduced public key authentication as a more secure alternative to the older authentication. It improved security by avoiding the need to have password stored in files, and eliminated the possibility of a compromised server stealing the user's password.

However, SSH keys are authentication credentials just like passwords. Thus, they must be managed somewhat analogously to user names and passwords. They should have a proper termination process so that keys are removed when no longer needed.

Creating an SSH Key Pair for User Authentication

The simplest way to generate a key pair is to run without arguments. In this case, it will prompt for the file in which to store keys. Here's an example:

First, the tool asked where to save the file. SSH keys for user authentication are usually stored in the user's directory under the home directory. However, in enterprise environments, the location is often different. The default key file name depends on the algorithm, in this case when using the default RSA algorithm. It could also be, for example, or .

Then it asks to enter a passphrase. The passphrase is used for encrypting the key, so that it cannot be used even if someone obtains the private key file. The passphrase should be cryptographically strong. Our online random password generator is one possible tool for generating strong passphrases.

Choosing an Algorithm and Key Size

SSH supports several public key algorithms for authentication keys. These include:

  • - an old algorithm based on the difficulty of factoring large numbers. A key size of at least 2048 bits is recommended for RSA; 4096 bits is better. RSA is getting old and significant advances are being made in factoring. Choosing a different algorithm may be advisable. It is quite possible the RSA algorithm will become practically breakable in the foreseeable future. All SSH clients support this algorithm.

  • - an old US government Digital Signature Algorithm. It is based on the difficulty of computing discrete logarithms. A key size of 1024 would normally be used with it. DSA in its original form is no longer recommended.

  • - a new Digital Signature Algorithm standarized by the US government, using elliptic curves. This is probably a good algorithm for current applications. Only three key sizes are supported: 256, 384, and 521 (sic!) bits. We would recommend always using it with 521 bits, since the keys are still small and probably more secure than the smaller keys (even though they should be safe as well). Most SSH clients now support this algorithm.

  • - this is a new algorithm added in OpenSSH. Support for it in clients is not yet universal. Thus its use in general purpose applications may not yet be advisable.

The algorithm is selected using the option and key size using the option. The following commands illustrate:

Specifying the File Name

Normally, the tool prompts for the file in which to store the key. However, it can also be specified on the command line using the option.

Copying the Public Key to the Server

To use public key authentication, the public key must be copied to a server and installed in an authorized_keys file. This can be conveniently done using the ssh-copy-id tool. Like this:

Once the public key has been configured on the server, the server will allow any connecting user that has the private key to log in. During the login process, the client proves possession of the private key by digitally signing the key exchange.

Adding the Key to SSH Agent

is a program that can hold a user's private key, so that the private key passphrase only needs to be supplied once. A connection to the agent can also be forwarded when logging into a server, allowing SSH commands on the server to use the agent running on the user's desktop.

For more information on using and configuring the SSH agent, see the ssh-agent page.

Creating Host Keys

The tool is also used for creating host authentication keys. Host keys are stored in the directory.

Host keys are just ordinary SSH key pairs. Each host can have one host key for each algorithm. The host keys are almost always stored in the following files:

The host keys are usually automatically generated when an SSH server is installed. They can be regenerated at any time. However, if host keys are changed, clients may warn about changed keys. Changed keys are also reported when someone tries to perform a man-in-the-middle attack. Thus it is not advisable to train your users to blindly accept them. Changing the keys is thus either best done using an SSH key management tool that also changes them on clients, or using certificates.

Using X.509 Certificates for Host Authentication

OpenSSH does not support X.509 certificates. Tectia SSH does support them. X.509 certificates are widely used in larger organizations for making it easy to change host keys on a period basis while avoiding unnecessary warnings from clients. They also allow using strict host key checking, which means that the clients will outright refuse a connection if the host key has changed.

Using OpenSSH's Proprietary Certificates

OpenSSH has its own proprietary certificate format, which can be used for signing host certificates or user certificates. For user authentication, the lack of highly secure certificate authorities combined with the inability to audit who can access a server by inspecting the server makes us recommend against using OpenSSH certificates for user authentication.

However, OpenSSH certificates can be very useful for server authentication and can achieve similar benefits as the standard X.509 certificates. However, they need their own infrastructure for certificate issuance. See more information on certificate authentication.

Key Management Requires Attention

It is easy to create and configure new SSH keys. In the default configuration, OpenSSH allows any user to configure new keys. The keys are permanent access credentials that remain valid even after the user's account has been deleted.

In organizations with more than a few dozen users, SSH keys easily accumulate on servers and service accounts over the years. We have seen enterprises with several million keys granting access to their production servers. It only takes one leaked, stolen, or misconfigured key to gain access.

In any larger organization, use of SSH key management solutions is almost necessary. SSH keys should also be moved to root-owned locations with proper provisioning and termination processes. For more information, see how to manage SSH keys. A widely used SSH key management tool for OpenSSH is Universal SSH Key Manager.

Practically all cybersecurity regulatory frameworks require managing who can access what. SSH keys grant access, and fall under this requirement. This, organizations under compliance mandates are required to implement proper management processes for the keys. NIST IR 7966 is a good starting point.

Make Sure There Is Enough Randomness

It is important to ensure there is enough unpredictable entropy in the system when SSH keys are generated. There have been incidents when thousands of devices on the Internet have shared the same host key when they were improperly configured to generate the key without proper randomness.

General Purpose Systems

On general purpose computers, randomness for SSH key generation is usually not a problem. It may be something of an issue when initially installing the SSH server and generating host keys, and only people building new Linux distributions or SSH installation packages generally need to worry about it.

Our recommendation is to collect randomness during the whole installation of the operating system, save that randomness in a random seed file. Then boot the system, collect some more randomness during the boot, mix in the saved randomness from the seed file, and only then generate the host keys. This maximizes the use of the available randomness. And make sure the random seed file is periodically updated, in particular make sure that it is updated after generating the SSH host keys.

Many modern general-purpose CPUs also have hardware random number generators. This helps a lot with this problem. The best practice is to collect some entropy in other ways, still keep it in a random seed file, and mix in some entropy from the hardware random number generator. This way, even if one of them is compromised somehow, the other source of randomness should keep the keys secure.

Embedded Devices and Internet of Things

Available entropy can be a real problem on small IoT devices that don't have much other activity on the system. They may just not have the mechanical randomness from disk drive mechanical movement timings, user-caused interrupts, or network traffic. Furthermore, embedded devices often run on low-end processors that may not have a hardware random number generator.

The availability of entropy is also critically important when such devices generate keys for HTTPS.

Our recommendation is that such devices should have a hardware random number generator. If the CPU does not have one, it should be built onto the motherboard. The cost is rather small.

Command and Option Summary

Here's a summary of commonly used options to the keygen tool:

-b “Bits” This option specifies the number of bits in the key. The regulations that govern the use case for SSH may require a specific key length to be used. In general, 2048 bits is considered to be sufficient for RSA keys.

-e “Export” This option allows reformatting of existing keys between the OpenSSH key file format and the format documented in RFC 4716, “SSH Public Key File Format”.

-p “Change the passphrase” This option allows changing the passphrase of a private key file with and , .

-t “Type” This option specifies the type of key to be created. Commonly used values are: - rsa for RSA keys - dsa for DSA keys - ecdsa for elliptic curve DSA keys

-i "Input" When ssh-keygen is required to access an existing key, this option designates the file.

-f "File" Specifies name of the file in which to store the created key.

-N "New" Provides a new passphrase for the key.

-P "Passphrase" Provides the (old) passphrase when reading a key.

-c "Comment" Changes the comment for a keyfile.

-p Change the passphrase of a private key file.

-q Silence ssh-keygen.

-v Verbose mode.

-l "Fingerprint" Print the fingerprint of the specified public key.

-B "Bubble babble" Shows a "bubble babble" (Tectia format) fingerprint of a keyfile.

-F Search for a specified hostname in a known_hosts file.

-R Remove all keys belonging to a hostname from a known_hosts file.

-y Read a private OpenSSH format file and print an OpenSSH public key to stdout.

This only listed the most commonly used options. For full usage, including the more exotic and special-purpose options, use the command.

Generating an SSH key with ssh-keygen


Источник: []

OpenBSD manual page server

— OpenSSH authentication key utility

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