【摘 要】
：
Based on the different representations of the finite field GF(256),there are different AES implementations,called dual ciphers.They have the same encryption process as AES,but with parameters modified
【机 构】
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National cybersecurity school,Wuhan university,China Suzhou Guoxin Company
【出 处】
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第十二届中国可信计算与信息安全学术会议
论文部分内容阅读
Based on the different representations of the finite field GF(256),there are different AES implementations,called dual ciphers.They have the same encryption process as AES,but with parameters modified.The research of dual ciphers initially aims to find more efficient AES implementations,and later it is found that they can be used to resist side-channel attacks and for white box ciphers.In this paper,based on the rotation of columns,we propose new AES dual ciphers,which use AES directly,but with the input matrix and output matrix rotated.The key expansion algorithm only needs some change on the computation sequence.Because of these features,there is almost no extra cost in implementing dual ciphers and it is easy for dual ciphers to work with other side channel protection methods to protect AES in more dimensions.
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