COUNTERMEASURE METHOD AND DEVICES FOR ASYMMETRIC ENCRYPTION
    1.
    发明申请
    COUNTERMEASURE METHOD AND DEVICES FOR ASYMMETRIC ENCRYPTION 审中-公开
    非对称加密的相对测量方法和设备

    公开(公告)号:US20110274271A1

    公开(公告)日:2011-11-10

    申请号:US12840347

    申请日:2010-07-21

    IPC分类号: H04L9/30

    摘要: A countermeasure method in an electronic component implementing an asymmetric private key encryption algorithm includes generating a protection parameter, calculating, using a primitive, an intermediate data from the protection parameter, dividing the binary representation of the private key into several binary blocks, transforming each binary block using the protection parameter and, for each transformed binary block, performing an intermediate calculation using the primitive, and calculating an output data by combining the intermediate data with the intermediate calculations.

    摘要翻译: 实现非对称私钥加密算法的电子部件中的对策方法包括生成保护参数,使用原语从保护参数计算中间数据,将私钥的二进制表示分为几个二进制块,将每个二进制 使用保护参数的块,并且对于每个变换的二进制块,使用该原语执行中间计算,并且通过将中间数据与中间计算组合来计算输出数据。

    METHOD AND DEVICES FOR PROTECTING A MICROCIRCUIT FROM ATTACKS FOR OBTAINING SECRET DATA
    2.
    发明申请
    METHOD AND DEVICES FOR PROTECTING A MICROCIRCUIT FROM ATTACKS FOR OBTAINING SECRET DATA 审中-公开
    用于保护MICROCIRCUIT从攻击获得秘密数据的方法和设备

    公开(公告)号:US20100262840A1

    公开(公告)日:2010-10-14

    申请号:US12768837

    申请日:2010-04-28

    IPC分类号: G06F21/22 H04L9/28

    摘要: A method of protecting a microcircuit against attacks aimed at discovering secret data used on the execution, by the microcircuit, of an encryption algorithm includes generating at least one protection parameter for the secret data and modifying the execution of the encryption algorithm through that protection parameter. Generation of the at least one protection parameter includes defining a function generating, by successively applying to at least one secret parameter which is stored in memory, a sequence of values which can only be determined from that secret parameter and that function, and to generate the protection parameter in a reproducible way from at least one value in that sequence.

    摘要翻译: 保护微电路免受针对旨在发现通过微电路执行加密算法所使用的秘密数据的攻击的方法包括为秘密数据生成至少一个保护参数并通过该保护参数修改加密算法的执行。 所述至少一个保护参数的生成包括定义通过连续地应用至少一个存储在存储器中的秘密参数来生成仅能从该秘密参数确定的值的序列,并且产生 保护参数以可重现的方式从该序列中的至少一个值。