| 摘要 |
PROBLEM TO BE SOLVED: To efficiently perform a code applied with an electronic signature and enciphering, without having to significantly change the existing OS. SOLUTION: A hetero-multiprocessor system provided with a secure processor 24 and an ordinary processor 22 is constructed, and a secure task and a non- secure task are distributed to the respective processors. The enciphered code of the secure task is stored in a secure memory 23 and the secure memory 23 verifies the signature with the public key of an authentication station and informs whether or not the enciphered code is valid to the secure processor 24. The secure processor 24 fetches an enciphering instruction from the secure memory 23, decodes and performs that instruction. |
