. . . "In the context of the current description, C-SID=1; [0044] sessionID???a four-byte number representing an identification and parameters, such as a session encrypt key, of the session created by the server for the client; [0045] key???a session key to be used with a mutually acceptable encryption, and to be used for encryption and decryption in all transactions in the session; [0046] derivative???a" .