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    • 10. 发明授权
    • Random number generation failure detection and entropy estimation
    • 随机数生成失败检测和熵估计
    • US09026571B2
    • 2015-05-05
    • US12258997
    • 2008-10-27
    • Carl M. Ellison
    • Carl M. Ellison
    • G06F7/58
    • H04L9/3242G06F7/58H04L9/0869H04L2209/24
    • In accordance with one or more aspects, an initial output string is generated by a random number generator. The initial output string is sent to a random number service, and an indication of failure is received from the random number service if the initial output string is the same as a previous initial output string received by the random number service. Operation of the device is ceased in response to the indication of failure. Additionally, entropy estimates for hash values of an entropy source can be generated by an entropy estimation service based on hash values of various entropy source values received by the entropy estimation service. The hash values can be incorporated into an entropy pool of the device, and the entropy estimate of the pool being updated based on the estimated entropy of the entropy source.
    • 根据一个或多个方面,初始输出字符串由随机数生成器生成。 如果初始输出字符串与由随机数服务接收的先前初始输出字符串相同,则将初始输出字符串发送到随机数服务,并且从随机数服务接收到失败指示。 响应于故障指示停止设备的操作。 此外,可以通过基于由熵估计服务接收的各种熵源值的哈希值的熵估计服务来生成熵源的散列值的熵估计。 哈希值可以被合并到设备的熵池中,并且基于熵源的估计熵更新池的熵估计。