Use detecting circuit
    71.
    发明授权
    Use detecting circuit 有权
    使用检测电路

    公开(公告)号:US07117474B2

    公开(公告)日:2006-10-03

    申请号:US10312125

    申请日:2001-06-18

    IPC分类号: G06F17/50

    CPC分类号: G11C16/22

    摘要: 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.

    摘要翻译: 用于检测集成电路元件的使用的电路可以包括非易失性电可编程存储电路和编程电路。 编程电路可以用于对存储电路进行部分编程,并且在使用元件时逐渐修改其编程级别,使得该级别表示元件的使用次数。

    PROTECTION OF A CIPHERING KEY AGAINST UNIDIRECTIONAL ATTACKS
    73.
    发明申请
    PROTECTION OF A CIPHERING KEY AGAINST UNIDIRECTIONAL ATTACKS 有权
    保护打击非法攻击的关键

    公开(公告)号:US20110170691A1

    公开(公告)日:2011-07-14

    申请号:US12917779

    申请日:2010-11-02

    IPC分类号: H04L9/00

    摘要: A method for protecting a key implemented, by an electronic circuit, in a symmetrical algorithm for ciphering or deciphering a message, including the steps of: selecting in non-deterministic fashion a pair of different masks from a set of at least four different masks, the masks having the property of representing different bit combinations, at least by pairs of bits; executing the algorithm twice by applying, to the key or to the message, one of the masks of the selected pair at each execution; checking the consistency between the two executions.

    摘要翻译: 一种用于保护由电子电路实现的用于加密或解密消息的对称算法的密钥的方法,包括以下步骤:从一组至少四个不同掩码中选择一对不同的掩码, 所述掩模具有表示不同位组合的属性,至少由位组成; 在每次执行时将所选择的一个掩码中的一个应用于密钥或者消息来执行算法两次; 检查两个执行之间的一致性。

    Blocking of the operation of an integrated circuit
    75.
    发明授权
    Blocking of the operation of an integrated circuit 有权
    阻塞集成电路的运行

    公开(公告)号:US07447916B2

    公开(公告)日:2008-11-04

    申请号:US10304364

    申请日:2002-11-26

    IPC分类号: G06F11/30

    摘要: A method and a system for blocking an integrated circuit after detection of an attempt of unauthorized access to information that it contains, in which a first program of generation of a second program to be executed in a random access memory of the integrated circuit is executed, the second program including several instruction sequences and each sequence ending with a branching to another sequence; and the second program is executed.

    摘要翻译: 一种用于在检测到未经授权的访问其包含的信息的尝试之后阻止集成电路的方法和系统,其中执行要在集成电路的随机存取存储器中执行的第二程序的第一程序, 所述第二程序包括若干指令序列,并且每个序列以分支到另一个序列结束; 并执行第二个程序。

    Sharing of a logic operator having a work register
    76.
    发明申请
    Sharing of a logic operator having a work register 有权
    共享具有工作寄存器的逻辑运算符

    公开(公告)号:US20070220074A1

    公开(公告)日:2007-09-20

    申请号:US11585658

    申请日:2006-10-24

    IPC分类号: G06F7/00

    CPC分类号: G06F9/3001 G06F9/30101

    摘要: A circuit for calculating a discriminating function with successive iterations and with a work register on data divided into blocks, including: a single operator in wired logic for executing the function; a plurality of work registers sharing the operator; and an element for selecting one of the work registers to be associated with the operator.

    摘要翻译: 一种用于通过连续迭代计算识别功能的电路,以及分成块的数据上的工作寄存器,包括:用于执行该功能的有线逻辑中的单个操作符; 多个工作寄存器共享操作员; 以及用于选择与操作者相关联的工作寄存器之一的元件。