The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2014
Filed:
Oct. 30, 2009
Applicants:
Daniel R. L. Brown, Mississauga, CA;
Matthew J. Campagna, Ridgefield, CT (US);
Marinus Struik, Toronto, CA;
Inventors:
Daniel R. L. Brown, Mississauga, CA;
Matthew J. Campagna, Ridgefield, CT (US);
Marinus Struik, Toronto, CA;
Assignee:
Certicom Corp., Mississauga, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/28 (2006.01); H04L 9/30 (2006.01); H04L 9/06 (2006.01);
U.S. Cl.
CPC ...
H04L 9/3066 (2013.01); H04L 2209/80 (2013.01); H04L 2209/20 (2013.01); H04L 9/0643 (2013.01);
Abstract
Elliptic curve hash functions are provided which do not require a pre-existing hash function, such as that required by the MuHash. The elliptic curve hash functions can be built from scratch and are collision free and can be incremental. In one embodiment, rather than a pre-existing hash function, the identity function with padding is used; and in another embodiment, rather than a pre-existing hash function, a block cipher with a fixed non-secret key is used.