SECURE PROCESSOR

摘要

PROBLEM TO BE SOLVED: To enable selecting a key to be used for encrypting/decrypting data and an execution code by an instruction being executed.

SOLUTION: A secure processor comprises: instruction executing means for executing the instruction; loading/storing control means for controlling the loading/storing of data in an external memory according to a command from the instruction executing means; and encryption processing means for encrypting/decrypting data between the loading/storing control means and the external memory. The instruction executing means designates the key to be used for encrypting/decrypting data in the encryption processing means in response to the instruction being executed or an access address of data/instruction fetch by the instruction being executed.

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