Patent · US Expired

Method of building fast MACS from hash functions

US5664016A · kind A · utility

101Cited by

4References

25Claims

0Family size

Assignee

Nortel Networks Limited · CA

Inventors

Bart Preneel · Leuven, BE
Paul C. Van Oorschot · Ottawa, CA

Key dates

Filing date	Oct 17, 1995
Grant date	Sep 2, 1997
Priority date	—
Expiry date	Oct 17, 2015

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/30
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Hash functions are important in modern cryptography. Main applications are their use in conjunction with digital signature schemes and message authentication. Hash functions, commonly known as message authentication codes (MACs), have received widespread use in practice for data integrity and data origin authentication. New and inventive ways of building fast MACs from hash functions involve keyed hash functions in which secret keys are used at certain locations of the compression process and the keys are also hashed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.