PGP Encryption Steps in PI 7.4

Hi All,

I have a requirement where I have to send a encrypted file to third party.

So, I want to know the steps to create the private and public keys from PI side, so that i can share the keys with third party in order to decrypt the file at their end.

Here requirement is PI should not be able to read the content of file and my scenario is file to file passthrough.

So,Help me with steps to implement PGP encryption in PI 7.4.