摘要
在基于汉明重量的简单能量泄露模型下,我们发现SMS4算法中某些操作会泄露出密钥信息,从而容易受到差分能量分析攻击。通过分析与实验我们证明了该攻击的可行性。随后提出两种对SMS4算法的改进,使其能抵御差分能量分析攻击,由此增强SMS4算法的安全性。
Under a simple power leakage model based on Hamming weight, we find some operation in SMS4 algorithm will leaks information about secret key which is vulnerable to differential Power Analysis attack. The attacks described are proven to be sound by using math analytical method and experiment. We propose two methods to modify the SMS4 algorithm in order to resistant against DPA and enhance the security of SMS4.
出处
《北京电子科技学院学报》
2008年第4期14-18,13,共6页
Journal of Beijing Electronic Science And Technology Institute
