System and method of message authentication

Details System and method of message authentication System and method of message authentication

H - Electricity

04

L

H04L 12/54 (2006.01) H04L 9/32 (2006.01)

Patent

CA 2552085

A system and method of improving the resistance of MAC functions to attack makes use of the output MAC value to perform a one-way operation such as exponentiation in a cyclic group such as a Galois Field. Further enhancements are provided by an optional keyed function that can provide another barrier through which an attacker must break. The application of a keyed function can also be applied to hashing functions so that they have the qualities of a MAC function and additionally benefit from the application of the one way operations to improve security.

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