ROBUST SCAN TECHNIQUE FOR SECURED AES AGAINST DIFFERENTIAL CRYPTANALYSIS BASED SIDE CHANNEL ATTACK
A. Tamilarasan, A. Bharathi Anbarasan · 2015
The proposed is a scan-protection scheme that provides testing facilities both at production time and over the course of the circuits life. The underlying principle is to scan-in both input vectors and expected responses and to compare expected and actual responses within the circuit. This scheme avoids the use of authentication tests. The proposed scan-protection scheme for the most secured cryptographic algorithm (AES Algorithm) to implement on any hardware with BIST architecture. This proposed method uses a Robust Scan Flip-Flops (RSFF) that delivers different outputs state for the same scan input. Thus the technique is unsusceptible to side channel attacks that hackers use to easily scan the encryption/decryption key and algorithm implementation.