# US 7,744,003 B2 · Microcircuit card whereof the performances can be modified after personalization > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,744,003 B2 - Document ID: US7744003B2 - Status: Granted - Kind: B2 - Application number: 10/530,203 - Filed: 2003-09-29 - Published: 2006-10-19 - Granted: 2010-06-29 - Earliest claimed: 2002-10-04 - Assignees: Oberthur Technologies - Inventors: Stéphane Jayet; Jean-Claude Huot - Web page: https://patentgrep.com/patent/US7744003B2 ## CPC - G07F 7/1008: {Active credit-cards provided with means to personalise their use, e.g. with PIN-introduction/comparison system} - G06Q 20/3552: {Downloading or loading of personalisation data} - G07F: COIN-FREED OR LIKE APPARATUS (coin sorting G07D3/00; coin testing G07D5/00; {handling coins or paper currencies apart from payment activated apparatus G07D; payment architectures, schemes or protocols G06Q20/00}) - G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR ## Abstract The invention concerns a microcircuit card comprising means (RX) for receiving a command and means for modifying at least one performance of the card capable of being implemented after a step of personalization of the card. ## Claims ### Claim 1 A microcircuit card (100) comprising: a receiver means (RX) for receiving a command (200); means for modifying at least one characteristic of the performance of said card on reception of said command, the modification means being characterized in that they can be used after a step (E10) of personalization of said card; and cryptographic means for authenticating the sender of said command, wherein said receiver means (RX) are configured to receive said command (200) in accordance with an SMS type protocol. ### Claim 2 (depends on 1) The microcircuit card according to claim 1, wherein the cryptographic means comprises an authentication key. ### Claim 3 (depends on 1) The microcircuit card according to claim 1, wherein the modification means are adapted to determine said at least one performance characteristic as a function of a predetermined instruction (210) received in said command (200). ### Claim 4 (depends on 1) The microcircuit card according to claim 1, wherein said means for modification of at least one performance characteristic are adapted to modify the size of a usable area (110) of a physical memory (EEPROM) of said card. ### Claim 5 (depends on 4) The microcircuit card according to claim 4, wherein said modification of the size of a usable area (110) of a physical memory (EEPROM) is effected by creating, destroying at least one specific file (VOID_FILE) or by modifying the size of at least one specific file (VOID_FILE) comprised in said physical memory. ### Claim 6 (depends on 1) The microcircuit card according to claim 1, wherein said means for modification of at least one performance characteristic are adapted to modify a clock frequency of said card, reversibly or not. ### Claim 7 (depends on 1) The microcircuit card according to claim 1, wherein said means for modification of at least one performance characteristic are adapted to allow or prevent the use of at least one software function (f) of said card, reversibly or not. ### Claim 8 (depends on 1) The microcircuit card according to claim 1, wherein said means for modification of at least one performance characteristic are adapted to allow or prevent the use of all or part of an electronic circuit (120) of said card, reversibly or not. ### Claim 9 (depends on 8) The microcircuit card according to claim 8, wherein said electronic circuit (120) is a cryptographic unit. ### Claim 10 (depends on 1) The microcircuit card according to claim 1, characterized in that it further comprises synchronization means (130) adapted to verify that said command (200) is unique. ### Claim 11 A method of configuring a microcircuit card (100) comprising the steps of: personalizing (E10) said card; receiving (E20) a command (200); cryptographically authenticating the sender of said command; and modifying (E40, E60, E70, E80) at least one characteristic of the performance of the card on reception of said command (200), wherein said receiving step (E20) receives the command in accordance with an SMS type protocol. ### Claim 12 (depends on 11) The method according to claim 11, wherein, during said modifying step (E40, E60, E70, E80), said at least one performance characteristic is determined as a function of a predetermined instruction (210) received in said command (200). ### Claim 13 (depends on 11) The method according to claim 11, wherein, during said modifying step (E40), the size of a usable area (110) of a physical memory (EEPROM) of said card is modified. ### Claim 14 (depends on 13) The method according to claim 13, wherein, during said modification of the size of a usable area (110) of a physical memory (EEPROM), at least one specific file (VOID_FILE) included in said physical memory is created, or destroyed or the size of at least one specific file (VOID_FILE) included in said physical memory is modified. ### Claim 15 (depends on 11) The method according to claim 11, wherein, during said modifying step (E60), a clock frequency of said card is modified, reversibly or not. ### Claim 16 (depends on 11) The method according to claim 11, wherein, during said modifying step (E70), the use of at least one software function (f) of said card is allowed or prevented, reversibly or not. ### Claim 17 (depends on 11) The method according to claim 11, wherein, during said modifying step (E80), the use of all or part of an electronic circuit (120) of said card is allowed or prevented, reversibly or not. ### Claim 18 (depends on 17) The method according to claim 17, wherein said electronic circuit (120) is a cryptographic unit. ### Claim 19 (depends on 11) The method according to claim 11, further comprising the step of: verifying (E35), prior to said modifying step (E40), that said command (200) is unique.