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    BLOCKING OF OPERATION OF INTEGRATED CIRCUIT
    1.
    发明专利
    BLOCKING OF OPERATION OF INTEGRATED CIRCUIT 审中-公开

    公开(公告)号：JP2003228521A

    公开(公告)日：2003-08-15

    申请号：JP2002343590

    申请日：2002-11-27

    Applicant: ST MICROELECTRONICS SA

    Inventor： LIARDET PIERRE-YVAN

    IPC: G06F12/14 ,  G06F21/55 ,  G06F21/75 ,  G06F21/77 ,  G06F21/79 ,  G06K19/073

    Abstract: PROBLEM TO BE SOLVED: To provide a method that blocks an integrated circuit when detecting unauthorized access to information included in the integrated circuit. SOLUTION: A first program is executed to generate a second program executed in a random access memory of an integrated circuit. The second program includes a plurality of instruction sequences, which each end with a branch to another sequence. The second program is next executed. COPYRIGHT: (C)2003,JPO

    METHOD FOR SCRAMBLING CALCULATION WITH SECRET QUANTITY
    2.
    发明专利
    METHOD FOR SCRAMBLING CALCULATION WITH SECRET QUANTITY 审中-公开

    公开(公告)号：JP2003177668A

    公开(公告)日：2003-06-27

    申请号：JP2002259962

    申请日：2002-09-05

    Applicant: ST MICROELECTRONICS SA

    Inventor： LIARDET PIERRE-YVAN ,  ROMAIN FABRICE

    IPC: G09C1/00 ,  G06F7/38 ,  G06F7/72

    Abstract: PROBLEM TO BE SOLVED: To provide a method for scrambling a calculation involving at least one operation taking into account a secret quantity with less resources than heretofore, and to reduce or minimize the storage duration of a random quantity used for the scrambling or unnecessitate the storage of the random quantity. SOLUTION: In the method, at least one intermediary result takes into account at least one secret quantity, modifies the intermediary result with a random quantity, carries on the calculation with the modified result, and restores an expected result at the end of the calculation. COPYRIGHT: (C)2003,JPO

    METHOD FOR MAKING SECURE A SECRET QUANTITY
    4.
    发明申请
    METHOD FOR MAKING SECURE A SECRET QUANTITY 审中-公开
    确保安全数量的方法

    公开(公告)号：WO03024017A2

    公开(公告)日：2003-03-20

    申请号：PCT/FR0203007

    申请日：2002-09-04

    Applicant: ST MICROELECTRONICS SA ,  SAGEM ,  LIARDET PIERRE-YVAN ,  CHABANNE HERVE

    Inventor： LIARDET PIERRE-YVAN ,  CHABANNE HERVE

    IPC: H04L9/10 ,  H04L9/06

    CPC classification number: H04L9/0625 ,  G06F2207/7219 ,  H04L9/004

    Abstract: The invention concerns a method and a system for making secure a secret quantity, contained in an electronic device, and used at least partly in an encryption algorithm of at least part of an input data executing a predetermined number (N) of successive iterations of a common function and producing at least part of an output data, which consists in: storing (14), after a first number (X) of iterations, an intermediate result; applying, to the output data, a function inverse to that of the encryption for a number (N-X) of iterations corresponding to the difference between the total number of iterations and the first number; comparing (18) the intermediate result with the result of iterations of the inverse function; and validating the encryption only if the two results are identical.

    Abstract translation: 本发明涉及一种用于制作安全秘密数量的方法和系统，其包含在电子设备中，并且至少部分地用于执行预定数目（N）的连续迭代的输入数据的至少一部分的加密算法中， 公共函数并产生输出数据的至少一部分，其包括：在第一数目（X）的迭代之后存储（14）中间结果; 向输出数据应用与加密的函数相反的函数，用于对应于迭代总数与第一数目之间的差的迭代次数（N-X）; 将所述中间结果与所述反函数的迭代结果进行比较（18）; 并且只有在两个结果相同的情况下才验证加密。

    6.
    发明专利
    未知

    公开(公告)号：DE602006011083D1

    公开(公告)日：2010-01-28

    申请号：DE602006011083

    申请日：2006-07-05

    Applicant: ST MICROELECTRONICS SA

    Inventor： TEGLIA YANNICK ,  LIARDET PIERRE-YVAN ,  POMET ALAIN

    IPC: G06F11/00 ,  G06F21/75 ,  G06F21/77 ,  G07F7/10

    Abstract: The method involves triggering a temporary counter (TIMER), which counts a data account based on instructions following a main program (Pg), during an execution of instruction of the main program. An instruction of a secondary program, depending on the result of the main program, is executed if the counter reaches its account, where the result of the main program is an arithmetic result. An independent claim is also included for an integrated circuit for implementing a protection execution method.

    7.
    发明专利
    未知

    公开(公告)号：DE60227632D1

    公开(公告)日：2008-08-28

    申请号：DE60227632

    申请日：2002-11-27

    Applicant: ST MICROELECTRONICS SA

    Inventor： LIARDET PIERRE-YVAN

    IPC: G06F12/14 ,  G06F21/55 ,  G06F21/75 ,  G06F21/77 ,  G06F21/79 ,  G06K19/073

    Abstract: A program stored in a non-volatile memory (2) is executed to generate a jump table containing available addresses of an executable RAM (6). A blocking program including sequence of instructions such as RD JUMP, RD INST to proceed with the loop operation of the blocking program, is executed in the executable RAM. An Independent claim is also included for integrated circuit card.

    8.
    发明专利
    未知

    公开(公告)号：DE60314584T2

    公开(公告)日：2008-03-06

    申请号：DE60314584

    申请日：2003-09-19

    Applicant: ST MICROELECTRONICS SA

    Inventor： LIARDET PIERRE-YVAN

    IPC: H04L9/30 ,  G06F7/72

    Abstract: The digital data is factorized by a residue number system based on finite base of numbers or polynomials prime to one another. An Independent claim is also included for circuit of algorithm processing of data factorized by residue number system.

    10.
    发明专利
    未知

    公开(公告)号：DE60114007T2

    公开(公告)日：2006-07-20

    申请号：DE60114007

    申请日：2001-06-18

    Applicant: ST MICROELECTRONICS SA

    Inventor： LIARDET PIERRE-YVAN ,  MUSSARD BRUNO

    IPC: G06F12/14 ,  G06F1/00 ,  G11C16/22 ,  G06F21/06 ,  G06F21/24 ,  G06K19/073 ,  G11C16/02

    Abstract: A circuit to detect the use of an element of an integrated circuit may include a non-volatile electrically programmable storage circuit and a programming circuit. The programming circuit may be used to partially program the storage circuit and gradually modify its programming level as the element is used so that the level represents the number of uses of the element.

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