Safety device against the unauthorized detection of protected data

摘要: The disclosure concerns the safety of confidential information contained in integrated circuits. In a certain number circuit applications and, more particularly, circuits cards known as "chip cards", it is necessary to prohibit access by unauthorized persons stored memory circuit. To prevent fraudulent practice examining current consumption at terminals during an operation reading or writing memory, protection used. This actuates simulation, according pseudo-random sequence generated generator, values identical those real cells.