Convert Key in ppk format.

PuTTY uses the PPK private-key format. When an OCI private key is available in PEM/OpenSSH format, PuTTYgen can be used to load the existing key and save it as a .ppk file

PPK Format

PPK = PuTTY Private Key

File extension .ppk Mainly used with PuTTY on Windows Stores the private key in PuTTY's key format A PEM/OpenSSH private key can be converted to PPK using PuTTYgen

step 1

Then save .(Done)