Fault Tolerant Infective Countermeasure for AES

摘要: Infective countermeasures have been a promising class of fault attack countermeasures. However, they subjected to several attacks owing lack formal proofs security and improper implementations. In this paper, we first provide information theoretic proof for one the most recently proposed state art infective against DFA, under assumption that adversary does not change flow sequence or skip any instruction. Subsequently, identify weaknesses in infection mechanism countermeasure could be exploited by which sequence. Furthermore, propose an augmented scheme obtained introducing suitable randomizations reduce success probabilities such attacks. All claims validated supporting simulations real life experiments on SASEBO-W platform. We also compare tolerance provided our existing scheme.