EP 1055206 A1 20001129 - PORTABLE OBJECT SUCH AS A CARD WITH MICROCIRCUIT COMPRISING MEANS FOR MONITORING COMMANDS APPLIED THERETO
Title (en)
PORTABLE OBJECT SUCH AS A CARD WITH MICROCIRCUIT COMPRISING MEANS FOR MONITORING COMMANDS APPLIED THERETO
Title (de)
TRAGBARES CHIPKARTENGERÄT MIT MITTELN ZUR ÜBERWACHUNG DER IHM ÜBERTRAGENEN STEUERSIGNALE
Title (fr)
OBJET PORTATIF DE TYPE CARTE A MICROCIRCUIT COMPRENANT DES MOYENS DE SUPERVISION DES COMMANDES QUI LUI SONT APPLIQUEES
Publication
Application
Priority
- FR 9900310 W 19990211
- FR 9801789 A 19980213
Abstract (en)
[origin: FR2775090A1] The invention concerns a portable object (10) comprising an interface receiving signals (VCC; CLK; RST) representing commands applied to the microcircuit (10) and signal (I/O) representing data to be processed by said microcircuit. Means (16, 26, 22) monitor for a given time interval the external application of at least one of said commands, said means being capable of detecting an abnormally repeated application of said command relative to a predetermined criterion and of selectively inhibiting, on the basis of said detection, the processing of the received data by the microcircuit. The monitored command can be the reset (RST) signal and/or the clock signal (CLK), and the given time interval, the interval between consecutive switching on and switching out of the portable object, the monitoring means (16, 26) operating by counting successive applications of the command, the predetermined criterion being the overshooting of the count value.
IPC 1-7
IPC 8 full level
E05B 19/00 (2006.01); E05B 49/00 (2006.01); G06K 19/073 (2006.01); G06K 19/10 (2006.01); G07F 7/10 (2006.01)
CPC (source: EP)
G06Q 20/341 (2013.01); G07F 7/082 (2013.01); G07F 7/1008 (2013.01)
Citation (search report)
See references of WO 9941715A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
FR 2775090 A1 19990820; FR 2775090 B1 20001229; EP 1055206 A1 20001129; JP 2002503857 A 20020205; WO 9941715 A1 19990819
DOCDB simple family (application)
FR 9801789 A 19980213; EP 99903737 A 19990211; FR 9900310 W 19990211; JP 2000531817 A 19990211