McGinn IP Law Group, PLLC
Semiconductor integrated circuit
A logic circuit includes n storage elements (n is a positive integer) which can each store 1-bit information, and an attack detection circuit. The attack detection circuit includes an error determination circuit which can detect through a logic operation that k-bit or less errors (k is a positive integer) have occurred in n-bit codes stored in the n storage elements, and a light irradiation detection circuit which has light detection elements and can detect that light has been irradiated to (k+1) or more of the n storage elements, and it is determined that the logic circuit has been attacked from outside when the error determination circuit detects an error or the light irradiation detection circuit detects light irradiation.
Renesas Electronics Corporation
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G06F G06F G06F G06F G06F G06F H03K
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Takanori Yoshiyuki
Miyoshi Amanuma