Re: Asymetric key?
David:
That's exactly what PGP does - a single-use symmetric key is generated, used to encrypt the message itself, then that symmetric key is encrypted with the Public Key cipher and bundled up. It's called a hybrid cryptosystem.
If you PGP-encrypt something to multiple recipient public keys, multiple encrypted copies of the symmetric key are included - one per recipient.
Biting the hand that feeds IT
