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    • 6. 发明授权
    • Randomly skewing secret values as a countermeasure to compromise
    • 随机倾斜秘密价值作为妥协的对策
    • US09525551B1
    • 2016-12-20
    • US13248127
    • 2011-09-29
    • Karl AckermanMarten Erik van DijkAri JuelsEmily Shen
    • Karl AckermanMarten Erik van DijkAri JuelsEmily Shen
    • H04L9/32G06F21/31G06F21/34
    • H04L9/3228G06F21/31G06F21/34H04L9/088
    • A first cryptographic device is authenticated by a second cryptographic device. The second cryptographic device stores an alternative version of a secret value associated with the first cryptographic device as a countermeasure to compromise of the secret value. In conjunction with a protocol carried out between the first cryptographic device and the second cryptographic device, the second cryptographic device determines the secret value based at least in part on the alternative version of the secret value, and utilizes the determined secret value to authenticate the first cryptographic device. The alternative version of the secret value may comprise a randomly-skewed version of the secret value. For example, the secret value may comprise a key or other parameter of the first cryptographic device and the alternative version of the secret value may comprise a randomly-skewed version of the key or other parameter.
    • 第一加密设备由第二加密设备认证。 第二加密设备存储与第一密码设备相关联的秘密值的备选版本作为妥协秘密值的对策。 结合在第一加密装置和第二密码装置之间执行的协议,第二加密装置至少部分地基于秘密值的备选版本来确定秘密值,并利用所确定的秘密值来认证第一加密装置 加密设备 秘密值的替代版本可以包括秘密值的随机倾斜版本。 例如,秘密值可以包括第一密码设备的密钥或其他参数,秘密值的备选版本可以包括密钥或其他参数的随机倾斜版本。