H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 9/06 (2006.01)
Patent
CA 2750358
The present invention relates to a cryptography circuit, protected notably against information-leak observation attacks. The cryptography circuit (21) comprises a functional key k c for executing a cryptography algorithm. It comprises a second key k i unique and specific to the circuit making it possible to protect by masking the functional and confidential key k c or a confidential implementation of the algorithm.
La présente invention concerne un circuit de cryptographie, protégé notamment contre les attaques par observation de fuites d'information. Le circuit de cryptographie (21) comporte une clé fonctionnelle k c pour exécuter un algorithme de cryptographie. Il comporte une deuxième clé k i unique et propre au circuit permettant de protéger par masquage la clé fonctionnelle et confidentielle k c ou une implémentation confidentielle de l'algorithme
Danger Jean-Luc
Guilley Sylvain
Institut Telecom-Telecom Paris Tech
Marks & Clerk
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