Personal Verification and Message Authentication Using Personal Keys
Original Publication Date: 1982-May-01
Included in the Prior Art Database: 2005-Feb-09
A protocol method is disclosed that allows user verification of a terminal user at a host system as a function of a user Personal Identification Number (PIN) and a Personal Cryptographic Key (KP) without the need for a master key resident in the terminal. Likewise, the protocol includes a method of authenticating a message transmitted from the terminal to the host system to achieve protection against message alteration, insertion and/or playback.