Ian Grigg <[EMAIL PROTECTED]> writes: >Alternatively, if one is in the unfortunate position of being an oracle for a >single block encryption then the packet could be augmented with a cleartext >random block to be xor'd with the key each request.
Moves you from being an encryption oracle to a related-key oracle, and makes the protocol non-idempotent. Peter. --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]
