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. 21, 2017
Filed:
May. 22, 2015
Applicant:
Sony Corporation, Tokyo, JP;
Inventors:
Assignee:
SONY CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); H04L 9/32 (2006.01); G06F 21/60 (2013.01); H04L 9/30 (2006.01); H04L 9/08 (2006.01);
U.S. Cl.
CPC ...
H04L 9/3221 (2013.01); G06F 21/602 (2013.01); H04L 9/0861 (2013.01); H04L 9/3093 (2013.01); H04L 9/3271 (2013.01); H04L 9/3239 (2013.01); H04L 2209/04 (2013.01);
Abstract
An authentication device includes circuitry that holds L (L≧2) secret keys s(i=1 to L) and L public keys ythat satisfy y=F(s) with respect to a set F of multivariate polynomials of n-th order (n≧2). The circuitry also performs with a verifier, an interactive protocol for proving knowledge of (L−1) secret keys sthat satisfy y=F(s). The circuitry receives L challenges from the verifier, arbitrarily selects (L−1) challenges from the L challenges received. The circuitry also generates, by using the secret keys s, (L−1) responses respectively for the (L−1) challenges selected, and transmits the (L−1) responses generated.