To more efficiently control access to secret information.
The system stores an expected value for each hash value of a plurality of components included in the system. Further, the system stores the expected value of certification information which serves as a condition for allowing access to secret information, by associating it with the secret information. The system has a register for storing the certification information for certifying completeness of the plurality of components. First, the system stores a value calculated by inputting each expected value further into a hash function as the certification information before the plurality of components are started. Then, the hash value of a newly started component is calculated, and with the condition that the calculated hash value is different from the expected value, the certification information of the register is updated. Then access to the secret information is allowed with the condition that the expected value of the certification information and the certification information of the register match.
COPYRIGHT: (C)2007,JPO&INPIT
Nakamura Megumi
Takuya Sanshin
Kichi Hama Sachiko
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| JP2004280284A |
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| US20050108564 |
Yoshihiro City
Takeshi Ueno
Tasaichi Tanae