摘要:分析了密码算法加密过程的功耗泄露模型,给出了差分功耗分析的基本原理,针对ARIA分组密码中查找S盒的功耗泄漏进行了差分功耗分析,并进行仿真实验。实验结果表明:ARIA密码中S盒查表操作功耗消耗易遭受差分功耗攻击,对800个随机明文的功耗曲线进行实验分析,可获取ARIA加密前4轮轮密钥,结合密钥扩展算法即可获取128位的主密钥。
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