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1. (WO2010084107) CRYPTOGRAPHY CIRCUIT PARTICULARLY PROTECTED AGAINST INFORMATION-LEAK OBSERVATION ATTACKS BY THE CIPHERING THEREOF
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2010/084107 International Application No.: PCT/EP2010/050547
Publication Date: 29.07.2010 International Filing Date: 18.01.2010
IPC:
H04L 9/06 (2006.01)
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9
Arrangements for secret or secure communication
06
the encryption apparatus using shift registers or memories for blockwise coding, e.g. D.E.S. systems
Applicants:
INSTITUT TELECOM-TELECOM PARISTECH [FR/FR]; 46 rue Barrault F-75013 Paris, FR (AllExceptUS)
DANGER, Jean-Luc [FR/FR]; FR (UsOnly)
GUILLEY, Sylvain [FR/FR]; FR (UsOnly)
Inventors:
DANGER, Jean-Luc; FR
GUILLEY, Sylvain; FR
Agent:
LUCAS, Laurent; Immeuble Visium 22, avenue Aristide Briand F-94117 Arcueil Cedex, FR
Priority Data:
095034220.01.2009FR
Title (EN) CRYPTOGRAPHY CIRCUIT PARTICULARLY PROTECTED AGAINST INFORMATION-LEAK OBSERVATION ATTACKS BY THE CIPHERING THEREOF
(FR) CIRCUIT DE CRYPTOGRAPHIE, PROTÉGÉ NOTAMMENT CONTRE LES ATTAQUES PAR OBSERVATION DE FUITES D'INFORMATION PAR LEUR CHIFFREMENT
Abstract:
(EN) The invention relates to a cryptography circuit that is particularly protected against attacks based on the observation of information leaks. The cryptography circuit (21) includes a functional key k c for running an cryptography algorithm. It comprises a second unique key k i that is particular to the circuit for protecting y masking the functional and confidential key k c or a confidential implementation of the algorithm.
(FR) 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
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)
Also published as:
SG173110EP2380305JP2012516094US20120045061CN102388563CA2750358
SG2014004535KR1020120018108FR2941343ES2602827CN108599917