Patent application number | Description | Published |
20080263533 | IMPLEMENTATION OF PATCHES BY A PROCESSING UNIT - A method and a circuit of execution, by a processing unit, of at least one patch of at least one first program stored in a first non-reprogrammable non-volatile memory, the patch being stored in a second memory, and wherein: each current address of an instruction of the first program provided by the processing unit is compared with values preloaded in at least one volatile storage element; in case of an identity between the current address and a preloaded value, an interrupt is triggered, this interrupt triggering a search, from a correspondence table, for an address of a patch in the second memory; and the patch is executed. | 10-23-2008 |
20110007567 | TEMPORARY LOCKING OF AN ELECTRONIC CIRCUIT - A method and a circuit for protecting at least one piece of information contained in an electronic circuit by disabling at least one function of the circuit in case of detection of a number of abnormal operations greater than a threshold, in which the disabling of the function is temporary, of a duration independent from whether the circuit is powered or not. | 01-13-2011 |
20110010775 | PROTECTION OF INFORMATION CONTAINED IN AN ELECTRONIC CIRCUIT - A method and a circuit for protecting data contained in an electronic circuit against a disturbance of its operation, in which a detection of a disturbance conditions the incrementing or the decrementing of a counter over at least one bit, the counter being automatically reset at the end of a time period independent from the fact that the circuit is or not powered. | 01-13-2011 |
20110038481 | HIERARCHIZATION OF CRYTOGRAPHIC KEYS IN AN ELECTRONIC CIRCUIT - A method of obtaining, in an electronic circuit, at least one first key intended to be used in a cryptographic mechanism, on the basis of at least one second key contained in the same circuit, the first key being stored in at least one first storage element of the circuit, the first storage element being reinitialized automatically after a duration independent of the fact that the circuit is or is not powered. Also described are applications of this method to encrypted transmissions, usage controls, as well as an electronic circuit implementing these methods. | 02-17-2011 |
20110122694 | LIMITATION OF THE ACCESS TO A RESOURCE OF AN ELECTRONIC CIRCUIT - A method and a circuit for controlling the access to at least one resource of an electronic circuit, in which a test of the value of a counter over at least one bit conditions the access to the resource, the counter being automatically reset after a time period independent from whether the circuit is powered or not. | 05-26-2011 |
20120261594 | DEVICE FOR DISTURBING THE OPERATION OF AN INTEGRATED CIRCUIT - A system for injecting faults by laser beams into an electronic circuit including: at least two lasers capable of emitting approximately parallel beams; at least one optical system receiving, on the magnifying side, the beams; and a support of the integrated circuit placed on the reducing side of the optical system. | 10-18-2012 |
20130059563 | DETECTION OF A REROUTING OF A COMMUNICATION CHANNEL OF A TELECOMMUNICATION DEVICE CONNECTED TO AN NFC CIRCUIT - The invention relates to a method for detecting an attempt to reroute a communication channel between a port of a security module and a port of a near-field communication router, which are in a telecommunication device, wherein, upon receiving a message in a near-field communication format, the security module verifies from which port of the communication router said message originates. | 03-07-2013 |
20130059566 | PROTECTION AGAINST REROUTING IN AN NFC CIRCUIT COMMUNICATION CHANNEL - A method for protecting information contained in a security module of a telecommunication device provided with a near-field communication router, wherein a routing table between the ports of the router contains at least one channel identifier calculated from an identifier of a radiofrequency port of a near-field communication circuit associated with the router. | 03-07-2013 |
20130059567 | PROTECTION OF A COMMUNICATION CHANNEL BETWEEN A SECURITY MODULE AND AN NFC CIRCUIT - A method for protecting data contained in a security module of a telecommunication device equipped with a near field communication router, wherein a modification of a routing table between gates of the router is dependent on a verification of an authentication code keyed in by a user. | 03-07-2013 |
20130059568 | PROTECTION OF A SECURITY MODULE IN A TELECOMMUNICATION DEVICE COUPLED TO AN NFC CIRCUIT - The invention relates to a method for protecting information contained in a security module of a telecommunication device provided with a near-field communication router, wherein the provision of information from the security module to the near-field communication router is subject to checking a signature of a routing table between ports of said router. | 03-07-2013 |
20130337770 | MANAGEMENT OF COMMUNICATION PIPES IN A TELECOMMUNICATION DEVICE COUPLED TO AN NFC CIRCUIT - A method for detecting an attempt of diversion of a communication pipe between a port of a security module and a port of a near-field communication router present in a telecommunication device, wherein the router filters the messages addressed to said security module. | 12-19-2013 |