KEY LADDER APPARATUS AND METHOD
    1.
    发明申请
    KEY LADDER APPARATUS AND METHOD 有权
    钥匙扣装置及方法

    公开(公告)号:US20170063538A1

    公开(公告)日:2017-03-02

    申请号:US14809300

    申请日:2015-07-27

    Abstract: In one embodiment a method, apparatus and system for is described for receiving a first input including a first decryption key and a second input including an encrypted second decryption key at a cryptographic decryption apparatus, the encrypted second decryption key to be decrypted by the cryptographic apparatus according to the first decryption key, storing a value of a key ladder length in a first register by a cryptographic processor, and using the stored value as a loop index by the cryptographic processor for a number of iterations of the cryptographic decryption apparatus executed as a loop, wherein at one stage in the loop execution of the cryptographic decryption apparatus, the second input includes the key ladder length, wherein the loop operation of the cryptographic decryption apparatus operates for a number of iterations equal to an initial value of the loop index. Related methods, apparatuses and systems are also described.

    Abstract translation: 在一个实施例中,描述了用于在密码解密装置处接收包括第一解密密钥和第二输入的第一输入的第一输入和第二输入的加密第二解密密钥的方法,装置和系统,由密码装置解密的加密的第二解密密钥 根据第一解密密钥,通过密码处理器将密钥梯形长度的值存储在第一寄存器中,并且通过密码处理器将所存储的值作为循环索引,将密码解密装置的迭代次数作为 循环,其中在所述加密解密装置的循环执行的一个阶段,所述第二输入包括所述密钥梯形图长度,其中所述密码解密装置的循环操作操作等于循环索引的初始值的迭代次数。 还描述了相关方法,装置和系统。

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