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    • 1. 发明申请
    • CODE CHECKING SYSTEM
    • 代码检查系统
    • WO2013128247A1
    • 2013-09-06
    • PCT/IB2012/055148
    • 2012-09-27
    • NDS LIMITEDSELLA, YaaronFRAENKEL, IttaelMANTIN, Itsik
    • SELLA, YaaronFRAENKEL, IttaelMANTIN, Itsik
    • G06F21/57G06F11/22
    • G06F21/575G06F11/1417
    • A system including a counter having a value, a processor to perform, as part of a boot-loading process, a code check including performing a partial check or a full check of the program code dependent on the value of the counter, the program code having a plurality of sections, adjust the counter value in a first direction if the full check is successful, and adjust the counter value in a second direction, if the partial check fails, and continue with the boot-loading process if the code check is successful, wherein the full check includes authenticating all of the program code against a first digital signature, the partial check includes authenticating one of the sections of the program code against a second digital signature, the first signature being the same as, or different from, the second signature. Related apparatus and methods are also described.
    • 包括具有值的计数器的系统,作为引导加载过程的一部分来执行代码检查的处理器,其包括依赖于计数器的值来执行程序代码的部分检查或完全检查,程序代码 具有多个部分,如果完整检查成功则调整第一方向的计数器值,如果部分检查失败则调整第二方向的计数器值,如果代码检查是继续执行引导加载过程 其中所述完整检查包括针对第一数字签名验证所有程序代码,所述部分检查包括针对第二数字签名验证所述程序代码的所述部分中的一个,所述第一签名与所述第一签名相同或不同, 第二个签名。 还描述了相关装置和方法。