OpenPGP
The OpenPGP add-on adds the ability to automate the encryption and decryption of files according to the OpenPGP standard. The Enterprise edition is a prerequisite for this add-on.
Features
Encrypt and Sign
Encrypt files with the recipient's public key and optionally sign files with the sender's private key before uploading. A file extension like .pgp can be added to the encrypted files.
KB: How to automate PGP encryption
Decrypt
Decrypt files with your private key after downloading. Decryption can be limited to files that match a specific file pattern, such as *.pgp.