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:
Apr. 03, 2012
Filed:
Feb. 22, 2007
Olivier Billet, Tourrettes sur Loup, FR;
Henri Gilbert, Bures sur Yvette, FR;
Matt Robshaw, Paris, FR;
Olivier Billet, Tourrettes sur Loup, FR;
Henri Gilbert, Bures sur Yvette, FR;
Matt Robshaw, Paris, FR;
France Telecom, Paris, FR;
Abstract
A device and a method of cryptographically hashing a message M, including the following steps: forming a sequence (M, . . . , Mi, . . . , Mc) of data m-tuples M=(a, . . . , a), . . . Mi=(a, . . . , a), . . . , Mc=a, . . . , a), where m is a strictly positive integer, from said message M; iteratively calculating successive output p-tuples V, . . . , V, . . . , V, where p is a strictly positive integer, corresponding to said sequence (M, . . . , Mi, . . . , Mc) of data m-tuples as a function of at least one set of multivariate polynomials defined over a finite field; and determining a hashing value of said message M as a function of the last output p-tuple V.