| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance the security property by making it difficult to perform the estimation of internal key information or the analysis of hardware without performing post processing such as pattern cut, etc. <P>SOLUTION: An encryption device is equipped with: a storage means which stores data for inspection, parameters for inspection, random numbers for inspection, and a key for inspection as initial values; and an encryption processing means which performs encoding processing. The encryption processing means performs the encryption processing using the data for inspection, the parameter for inspection, the random numbers for inspection, and the key for inspection stored in the storage means, according to the instruction of an inspection mode is given from outside. <P>COPYRIGHT: (C)2004,JPO |
