Microprocessor comprising signing means for detecting an error injection attack

摘要

The method involves allowing deterministic logic address, control or data signals on a control bus (CB), an address bus (AB) and a data bus (DB) of an integrated circuit (IC). Current cumulative signatures are produced from the logical signals until a final cumulative signature is obtained, at the end of the execution of a sequence. The final cumulative signature is compared with an expected signature. - An INDEPENDENT CLAIM is also included for an integrated circuit comprising a central processing unit for executing a program comprising an instruction-code