Download PuTTY and PuTTY Key Generator
Puttygen is nothing but the key generator tool by which the private and public SSH keys for putty is created. PuTTYgen is also counted as its primary function. PuTTYgen uses its format in .ppk to generate the keys.
Puttygen is a part of putty. PuTTYgen originally made for the Microsoft Windows operating system, but now it is used for a multi-operating system like Linux, macOS, etc.
For Windows, PuTTYgen.exe is the graphical tool, whereas, for the Linux OS, it is the command-line version and accessible by SSH commands.
Generally, the Unix uses the command line type interface MS-Dos to get anything to be processed. Users need to write command lines.
These command lines can run over the network, and the network protocol like SSH, Telnet, Rlogin, etc. helps these purposes.
The network protocol SSH is a cryptographic network protocol, and it helps you access an internet server while encrypting any of the information sent to it.
The other protocol is Telnet, Rlogin if you have a login account on a web server or connect to a UNIX system. PuTTY helps you in such kind of transfer.
PuTTY can be easily installed with the PuTTY.msi package. There is no need for separate downloading. You can easily install and run the PuTTYgen very quickly once you download the PuTTY software.