Title：System and method for actively defending hardware Trojan on storage path
Country：China
Patent No.：202010294220.5
Legal Status：Under review
Inventor：Liji Wu, Jian Wu, Xiangmin Zhang, Xiangyu Li, Dewei Wang
Assignee：Tsinghua University
Address：Tsinghua University,Haidian District Beijing 100084, China
Filing Date：2020-04-15
Issue Date：
Abstract：
The invention provides a system and method for actively defending hardware Trojan on a storage path, and the system comprises: a secret key unit which is connected with a CPU and is used for generating a secret key needed by a code transformation operation and a decoding operation according to an instruction of the CPU; a transcoding unit which is connected with the memory and the secret key unit,and is used for acquiring original data, performing transcoding operation on the original data by utilizing the secret key and transmitting the original data to the memory for storage; and a decodingunit which is connected with the memory and the secret key unit and is used for acquiring the data output by the memory and decoding the data output by the memory by utilizing the secret key. According to the method, the primary Trojan horse and the high-order Trojan horse can be effectively defended, the hardware Trojan horse resisting performance can be fully achieved, the speed requirement ofa memory can be met, and normal work of a chip is guaranteed.
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