PuTTYgen KEY GENERATOR 2024: PuTTYgen is a key generator tool for creating pairs of public and private SSH keys. It is one of the components of the open-source networking client PuTTY. Although originally written for Microsoft Windows operating system, it is now officially available for multiple operating systems including macOS, Linux. 

PuTTYgen.exe is the graphical tool on Windows OS. While on the other side, Linux OS has the only command-line version could be accessible using SSH commands.

PuTTYkey is a key generator tool for creating pairs of public and private SSH keys. PuTTY is helpful in network file transfer applications, serial consoles, and open-source terminal eliminators.

PuTTY is defined as software supporting several network protocols, SCP, SSH, rlogin, Telnet, and raw socket connections. For Windows and Linux, this software is used for the terminal emulator, network file transfer application, and serial console.

You can grasp the in-depth knowledge of Putty for various platforms and learn its connectivity with image guidelines. It’s time for you all to explore the experience of PuTTY with interest.

What is PuTTY?

PuTTYgen KEY GENERATOR 2024A British programmer Simon Tatham has written and maintained the PuTTY primarily. It is software that supports several network protocols, SCP, SSH, Rlogin, Telnet, and raw socket connections.

For Windows and Linux, this software is used for the terminal emulator, network file transfer application, and serial console. Image is an example of an SSH session of PuTTY.


Uses of PuTTY

PuTTYgen KEY GENERATOR 2024This software is most prominently used to secure remote shell access; it is one of its many uses.

For the MS- Window platform, Putty is most likely use for SSH clients.

In the world of SSH, the most used implementation is Open SSH

How to Manage Session in PuTTY?

PuTTYgen KEY GENERATOR 2024You need to specify the specific options in the preliminary panel to open a session. The Host Name Bar (or IP Address) in this user has to input the name or the IP Address of the server.
  • Radio button Connection Type will allow the user to connect to the network of their choice.
  • Once you select the type of connection, the Port Bar has filled automatically. If you choose the Raw Type, the bar stays blank, and users have to enter the port manually.
  • The Serial Line and Speed will replace the Host Name and Port Bars once you select the Serial as the connection type.
  • The “Load, save or delete a stored session” helps you set some connection without acknowledging all the details.
  • After saving it, you can select the save session and click on Load. In the respective box of the configuration panel, the save setting will appear.
  • To modify the save session, the panel permits by first loading a session, editing everything you want to modify, i.e., making changes, and finally clicking the Save button.
  • To delete the season, the Users have this option.
  • The Close Window on Exit option helps the user decide whether they want the PuTTY terminal has to be closed as the session ends or to restart the session on Termination. After download and installing, 2 or 3 steps help you to run PuTTY successfully.


Puttygen aka Putty Key Generator

PuTTYgen KEY GENERATOR 2024The key generation utility – PuTTYgen can create various public-key cryptosystems including Rivest–Shamir–Adleman (RSA), Digital Signature Algorithm (DSA), Elliptic Curve Digital Signature Algorithm (ECDSA), and Edwards-curve Digital Signature Algorithm (EdDSA) keys.

The aforementioned public-key cryptosystems principally focus on secure data transmission and digital signatures.

Although PuTTYgen collects keys in its native file format i.e. .ppk files, the keys can easily be converted to any file format. For Windows, the software interface is PuTTYgen.exe, whereas, for Linux OS the command-line adaptation is available using SSH commands.


How to use PuTTYgen?

PuTTYgen KEY GENERATOR 2024PuTTYgen is used to generate public or private key pair for creating SSH keys. Below is the complete guidance about how to generate RSA key in the Windows operating system:
  • Once you install the PuTTY on your machine, you can easily run PuTTYgen. For the same, go to Windows -> Start Menu -> All Programs -> PuTTY -> PuTTYgen.
  • You will see the PuTTY key generator dialog box on your screen
  • You will find a “Generate” button in that dialog. Clicking on it will lead to generating the keys for you.
  • Now you will need to add a unique key passphrase in the Key passphrase and Confirm passphrase field.
  • Click on the “Save Public Key” and “Save Private Key” buttons to save your public and private keys.
  • You will see the text starting with ssh-RSA in the Public key for pasting into OpenSSH authorized_keys file field which is located at the top of the window. 
  • Copy that entire text to your clipboard by pressing ctrl+c as you will require the key to paste on your clipboard in the public key tool of control panel or directly on the cloud server.

Various Ways to Use RSA Key Pair

PuTTYgen KEY GENERATOR 2024RSA key pair generated through PuTTYgen is used in two various ways defined as below:
  • To assign while creating a new cloud server
  • You can choose the public key from the given list of keys at the time of creating a cloud server. If you don’t find your key in that list, then first add and then assign it.
  • Assign to an existing cloud server
  • At the time of connecting to the cloud server, first of all, you need to tell PuTTY to use it for utilizing your newly created RSA key pair.

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