OptionalkeyThe content key to use to encrypt the envelope's subject (ur:crypto-key)
OptionalpasswordA password used to lock the content key
Use SSH_ASKPASS to read the password
The password-based key derivation algorithm
OptionalsshThe SSH agent key identity used to lock the content key
The recipients to whom the envelope's subject should be encrypted (ur:crypto-pubkeys)
OptionalenvelopeThe envelope to encrypt
Command arguments for the encrypt command.