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:
May. 03, 2011
Filed:
Jan. 17, 2008
Pascal Junod, Vufflens-la-Ville, CH;
Alexandre Karlov, Meyrin, CH;
Pascal Junod, Vufflens-la-Ville, CH;
Alexandre Karlov, Meyrin, CH;
Nagravision S.A., Cheseaux-sur-Lausanne, CH;
Abstract
The aim of the present invention is to propose a very fast alternative mechanism to the traitor tracing algorithm introduced by Boneh and Franklin to trace private keys in a public-key cryptosystem. This invention concerns a method to trace traceable parts of original private keys in a public-key cryptosystem consisting of one public key and λ corresponding private keys, a private key being formed by a traceable array of 2elements forming a syndrome of a generalized Reed-Solomon code with parameters (λ, λ-2k) defined by the base points {right arrow over (π)}=(π, . . . , π) and a scaling vector {right arrow over (c)}=(c, c, . . . , c), comprising the steps of: obtaining the traceable part {right arrow over (d)}=(d, . . . , d)of a rogue private key,