PROGRAM EXECUTION APPARATUS, CONTROL METHOD, CONTROL PROGRAM AND INTEGRATED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide an information processing apparatus 100 which reduces an overhead associated with processing not directly related to information security such as encryption by securing confidentiality by encryption or the like.

SOLUTION: The information processing apparatus 100 includes: an application program A158 that includes an instruction for encryption which uses a key; a tampering detection unit 135x that detects tampering of the program; a CPU 141 that operates according to instructions and outputs a direction for encryption upon detecting the instruction for encryption; a data encryption/decryption function unit 160 that controls switching to a protective mode according to the direction; and a protected data operation unit 155 that stores a key in association with the program, outputs the key in the protective mode, and controls switching to a normal mode. The data encryption/decryption function unit 160 executes the encryption in the normal mode using the received key.

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