SEMICONDUCTOR INTEGRATED CIRCUIT AND DATA TRANSFER METHOD
PROBLEM TO BE SOLVED: To provide a semiconductor integrated circuit which improves resistance against power analysis attack with less circuit change from an existing semiconductor integrated circuit and with less random number bit and without deteriorating a transfer performance.SOLUTION: A semicond...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a semiconductor integrated circuit which improves resistance against power analysis attack with less circuit change from an existing semiconductor integrated circuit and with less random number bit and without deteriorating a transfer performance.SOLUTION: A semiconductor integrated circuit 1 of the present embodiment comprises inversion control parts 6 which are provided at input/output ends of a CPU 3, memory units 4A, 4B and a cryptographic coprocessor 5. In the semiconductor integrated circuit 1, confidential information data is inverted at random depending on random number bit output from a random number generation unit 7 at the time of data transfer. |
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