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    • 8. 发明授权
    • System and method for secure data disposal
    • 用于安全数据处理的系统和方法
    • US07853804B2
    • 2010-12-14
    • US11852418
    • 2007-09-10
    • Daryl Carvis CromerHoward Jeffrey LockerRandall Scott Springfield
    • Daryl Carvis CromerHoward Jeffrey LockerRandall Scott Springfield
    • G06F11/30G06F7/04H04L29/06
    • G06F21/575
    • A system, method, and program product is provided that initializes expected PCRs stored in a TPM by generating and storing a random number, seeding expected PCRs with the random number, inputting a set of startup code processes to a hash algorithm resulting in a set of hash values, updating the expected PCRs using the set of hash values, and saving the expected PCRs in a nonvolatile data area that is secured by the TPM. Upon reboot, the random number is retrieved from the nonvolatile data area, the PCRs are seeded with the retrieved random number, the startup code processes are input to the hash algorithm process resulting in another set of hash values, the PCRs are updated using the resulting set of hash values, and an encrypted data object is decrypted in response to the PCRs being the same as the expected PCRs.
    • 提供了一种系统,方法和程序产品,其通过生成和存储随机数来初始化存储在TPM中的预期PCR,将随机数的种子预期PCR输入到一个散列算法中,从而产生一组 散列值,使用该组散列值更新预期PCR,并将预期PCR保存在由TPM保护的非易失性数据区域中。 在重新启动时,从非易失性数据区域检索随机数,用检索的随机数种子PCR,将启动代码处理输入到散列算法处理,得到另一组散列值,使用所得到的更新PCR 响应于与预期PCR相同的PCR来解密加密数据对象。