The Research Of A New Side-Channel Attack And Defense Policy

In recent years, researchers may use to achieve more and noted the characteristics and operating environment attacks. Side-Channel attacks, primarily through its protocol implementation of information disclosure, rather than traditional password-based protocol specification of the mathematical basis for analysis. A new side-channel attack presented here: differential behavior analysis. Differential behavior analysis is based on the differential power attack and differential fault attacks, a new attack, the attacker has some advantages of the two attacks, while providing the required information on the entire encryption process is less than the above two methods, the paper theoretical analysis of the attack on the AES implementation, and gives the part of the operation result.the use of differential behavior analysis on China's WAPI wireless LAN encryption algorithm in SMS4 analyzed, and theoretically verified its feasibility. SMS4 algorithm is the official publication of the first commercial cryptographic algorithms, using the SP-type structure, this differential behavior analysis of the feasibility of the SMS4 on a theoretical analysis.For the differential behavior analysis on the implementation of AES and SMS4 analyzes the attack: Differential Power attack and differential fault attacks, and according to the two attacks against the defense strategy, in theory, analysis of proposed security for the differential behavior defense strategy, and analysis of the possible increase in complexity and computational overhead.