公开(公告)号：US20230169167A1

公开(公告)日：2023-06-01

申请号：US17958775

申请日：2022-10-03

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Takahiro MINAKI

IPC: G06F21/55

CPC classification number: G06F21/554 ,  G06F2221/034

Abstract: A semiconductor device provides a method to avoid side-channel attacks. While the logic circuit A for performing the encryption process does not operate, by operating the logic circuit B (performing processing other than the encryption) having a circuit scale of approximately the same as the logic circuit A, the change in the consumption current interlocked with the operation state of the logic circuit A is shielded, it is possible to make it difficult to decrypt the encryption key of the logic circuit A by analyzing the current waveform.