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    • 4. 发明授权
    • Key information generation device and key information generation method
    • 关键信息生成装置及关键信息生成方法
    • US09391772B2
    • 2016-07-12
    • US14115251
    • 2011-06-02
    • Daisuke Suzuki
    • Daisuke Suzuki
    • H04L9/10H04L9/08H04L9/32G06F12/14G11B20/00G06F21/50G06F21/70
    • H04L9/0866G06F12/14G06F21/50G06F21/70G06F2221/21G11B20/00086H04L9/3278
    • In initial generation (for example, shipping from the factory), a security device generates an identifier w specific to the security device, with the PUF technology, generates key information k (k=HF(k)) from the identifier w, generates encrypted confidential information x by encrypting (x=Enc(mk, k)) confidential information mk with the key information k, and stores the encrypted confidential information x and an authentication code h (h=HF′(k)) of the key information k, in a nonvolatile memory. In operation, the security device generates the identifier w with the PUF technology, generates the key information k from the identifier w, and decrypts the encrypted confidential information x with the key information k. At a timing where the identifier w is generated in the operation, the security device checks whether the current operating environment has largely changed from the initial generation (S311). If a change in operating environment is detected (S311→S312), the security device conducts a reset-up process (S312 to S315) of an authentication code h which is confidential information, and the encrypted confidential information x.
    • 在初始阶段(例如,出厂时),安全设备生成特定于安全设备的标识符w,利用PUF技术,从标识符w生成密钥信息k(k = HF(k)),生成加密 机密信息x通过用密钥信息k加密(x = Enc(mk,k))机密信息mk,并且将加密的机密信息x和密钥信息k的认证码h(h = HF'(k))存储 ,在非易失性存储器中。 在操作中,安全设备利用PUF技术生成标识符w,从标识符w生成密钥信息k,并用密钥信息k对加密的机密信息进行解密。 在操作中生成标识符w的定时,安全装置检查当前的操作环境是否从初始生成发生了很大的变化(S311)。 如果检测到操作环境发生变化(S311→S312),则安全装置进行作为机密信息的认证码h的复位处理(S312〜S315)和加密的机密信息x。
    • 6. 发明申请
    • INTEGRATED SECURITY DEVICE AND SIGNAL PROCESSING METHOD USED FOR AN INTEGRATED SECURITY DEVICE
    • 用于集成安全设备的集成安全设备和信号处理方法
    • US20150312047A1
    • 2015-10-29
    • US14651130
    • 2012-12-11
    • Daisuke SUZUKI
    • Daisuke SUZUKI
    • H04L9/32
    • H04L9/3278G09C1/00H04L9/0866H04L2209/122
    • An integrated security device, including: an encryption/decoding processing unit for executing processing necessary for authentication by using a logic circuit that forms an encryption/decoding function; a selector for selecting signals whose number corresponds to a specific number of lines from among signals from a plurality of intermediate nodes of the logic circuit in accordance with a selection signal; and a signal processing unit having a function of detecting a glitch caused by the signals corresponding to the specific number of lines, for implementing both a function of generating a physical random number and a function of generating a device identifier by a physical characteristic based on the glitch detected by switch-selecting the signals corresponding to the specific number of lines.
    • 一种集成安全装置,包括:加密/解码处理单元,用于通过使用形成加密/解码功能的逻辑电路执行认证所需的处理; 选择器,用于根据选择信号从来自逻辑电路的多个中间节点的信号中选择数量对应于特定行数的信号; 以及信号处理单元,其具有检测由与特定行数对应的信号引起的毛刺的功能,用于实现生成物理随机数的功能和基于物理特性的物理特性来生成设备标识符的功能 通过开关选择对应于特定行数的信号检测到毛刺。