Serial RRAM Cell for Secure Bit Concealing

Non-volatile memory cells are exposed to adversary attacks since any active countermeasure is useless when the device powered off. In this context, work proposes association of two serial RRAM devices as a basic cell store sensitive data, which could solve bothersome problem. This has three states: ‘1’, ‘0’, and masked. When system off or data not used, set masked state, where still stores ‘1’ ‘0’ but malicious capable extracting stored value using reverse engineering techniques. Before reading, needs be unmasked it afterwards until next reading request. The operation also provides robustness against side-channel attacks. presented experimental results confirm validity proposal.