Reaserch Of Anti-Side Channel Attack Method Based On AES

Since AES has strict, efficient and secure mathematic structure, it has become a newadvanced encryption standard in the21st century, widely used in the security area of computercommunication and information system. SCA technique can be employed to recover theoriginal key of the algorithm with the physical information which leaks during the process ofalgorithm realization in the form of hardware or software. But this technique brings provedserious threaten to the safety of chip, which is an important carrier of algorithm realization.Guided with successful cases of SCA technology, this paper focuses on the theme of AESsafety realization and the research on methods of anti-SCA. The research attaches moreattention on the study of anti-DPA and anti-DFA and there are four main parts of this papershown as follows:1、A novel fault attack and its defensive measure based on AES: first, by analyzing thetraditional DFA scheme, a new attack scheme based on AES is proposed employing the multi-byterandom failure model, and MATLAB tool is used to verify the efficiency of the proposed scheme;then, according to the theory of cyclic redundancy checker, a new fault detector is proposed andapplied to algorithm realization with hardware when this process is deduced by random failure; atlast, Quartus II is used to simulate and verify the defense ability of the proposed circuit.2、A JK flip-flop design with anti-differential power attack property based on SABL: byanalyzing traditional flip-flop structure and the theory of side channel attack, the statefunction of JK flip-flop with invariable energy consumption is derived based on the workingcharacteristics of SABL unit and the characteristic equation of flip-flop, thus thecorresponding flip-flop is realized based on SABL. Experimental results show that this noveldesigned circuit has significant property of anti-differential power attack.3、Design and application of anti-differential power attack circuit based on MSMV: byanalyzing the principle of SABL and DPA, a dual-supply dual-vth dual rail pre-charge logiccircuit based on muti-supply muti-vth CMOS circuit techniques is proposed, and this structurehas low power and anti-differential power attack features. A novel full adder structure usingsuch logic is proposed. Experimental results show that this full adder has correct logicfunction and significant features of low power and anti-differential power attack. 4、Design of anti-zero value power attack circuit based on masking technique: by analyzingthe principle of DPA and the structure of AES, an AES Sub-Byte module design with anti-zerovalue power attack property and its VLSI implementation scheme is proposed. This scheme adoptskey module reuse method and data masking method, which has significantly decreased the chipsize and increased the operating speed. Experimental results show that the module performanceindex achieves great improvement.