We have a FTP server to send/receive highly sensitive data with our partners. Before /after transmission, these sensitive data has been encrypted/decrypted on PGP server.
Last week, a partner sent a PGP file that had been encrypted with our public key. But it couldn't be decrypted with our private key on PGP server, but it still could be decrypted on a PGP desktop with same private key.
Does anybody have any idea what reason could make this issue happen?
Thank you in advance for your help.