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:
Mar. 13, 2007
Filed:
Oct. 10, 2002
Applicants:
Luc Wuidart, Pourrieres, FR;
Michel Bardouillet, Rousset, FR;
Laurent Plaza, Fuveau, FR;
Inventors:
Assignee:
STMicroelectronics S.A., Montrouge, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 11/30 (2006.01); H04L 9/00 (2006.01); G07C 9/00 (2006.01); G07B 15/00 (2006.01); H04L 9/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and a circuit for generating a secret quantity based on an identifier of an integrated circuit, in which a first digital word is generated from a physical parameter network, and this first word is submitted to at least one retroaction shift register, the output of the shift register forming the secret quantity.