Data integrity checking circuit

摘要

A secured electronic device comprises a microprocessor (303) and a memory (302), the microprocessor allowing to read data from the memory and write data into the memory. Integrity checking means allow to perform an integrity check on data stored in the memory. The secured electronic device further comprises an integrity circuit that is connected to exchange data with the microprocessor and to exchange data with the memory such that the microprocessor reads and writes data from the memory through the integrity circuit, the integrity circuit comprising the integrity checking means.