Patents by Inventor Bart K. B. Preneel

Bart K. B. Preneel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of building fast MACS from hash functions
    Patent number: 5664016
    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.
    Type: Grant
    Filed: October 17, 1995
    Date of Patent: September 2, 1997
    Assignee: Northern Telecom Limited
    Inventors: Bart K. B. Preneel, Paul C. Van Oorschot