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1. (WO2007006887) PROTECTION AGAINST ATTACKS BY GENERATING ERRORS ON JUMP INSTRUCTIONS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/006887 International Application No.: PCT/FR2006/001519
Publication Date: 18.01.2007 International Filing Date: 29.06.2006
IPC:
G06F 12/14 (2006.01) ,G06F 21/34 (2013.01) ,G07F 7/10 (2006.01)
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
12
Accessing, addressing or allocating within memory systems or architectures
14
Protection against unauthorised use of memory
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
21
Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
30
Authentication, i.e. establishing the identity or authorisation of security principals
31
User authentication
34
involving the use of external additional devices, e.g. dongles or smart cards
G PHYSICS
07
CHECKING-DEVICES
F
COIN-FREED OR LIKE APPARATUS
7
Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
08
by coded identity card or credit card
10
together with a coded signal
Applicants:
OBERTHUR CARD SYSTEMS SA [FR/FR]; 102, boulevard Malesherbes F-75017 Paris, FR (AllExceptUS)
CHAMBEROT, Francis [FR/FR]; FR (UsOnly)
BARAU, Emmanuel [FR/FR]; FR (UsOnly)
Inventors:
CHAMBEROT, Francis; FR
BARAU, Emmanuel; FR
Agent:
SANTARELLI; 14, avenue de la Grande-Armée B.P. 237 F-75822 Paris Cedex 17, FR
Priority Data:
050740511.07.2005FR
Title (EN) PROTECTION AGAINST ATTACKS BY GENERATING ERRORS ON JUMP INSTRUCTIONS
(FR) PROTECTION CONTRE LES ATTAQUES PAR GENERATION DE FAUTES SUR LES INSTRUCTIONS DE SAUT
Abstract:
(EN) The invention relates to a method for securing a program against attacks by error, in particular in a smartcard comprising at least one cycle consisting in identifying in a program a jump instruction towards a security action program, wherein said jump instruction is formed by an instruction code and an addressing parameter of the security action program, in determining a physical address for storing said security action program, therein said physical address is determined according to the jump instruction code, and in allocating the physical address value of a determined security action program to an address parameter contained in the jump instruction,
(FR) Un procédé de sécurisation d'un programme contre des attaques par faute, notamment dans une carte à puce, caractérisé en ce qu'il comprend au moins un cycle comprenant les étapes suivantes : identification dans ce programme d'une instruction de saut vers un programme d'action sécuritaire, l'instruction de saut étant formée d'un code d'instruction et d'un paramètre d'adressage du programme d'action sécuritaire, détermination de l'adresse physique de mémorisation du programme d'action sécuritaire, l'adresse physique étant déterminée à partir du code de l'instruction de saut et / ou du code de l'instruction suivant l'instruction de saut, et attribution, au paramètre d'adressage contenu dans l'instruction de saut, de la valeur de l'adresse physique du programme d'action sécuritaire déterminée.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, 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, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, 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)