Open PPK File
The PPK extension file is a file created by PuTTYgen or known by its trade name, PuTTY Key Generator, which is a program used to generate keys for public key cryptography.
The PPK file stores a private key generated by the program.
The PPK file is used to allow secure communication with a remote entity that has the corresponding public key.
PPK files are used by PuTTY, a free SSH and Telnet client.
PPK files can also be opened using WinSCP, an SFTP and FTP client for Windows.
You can set the location of the PPK file when creating a new connection in WinSCP by selecting Advanced ? SSH ? Authentication ? Private key file.