ARIA分组密码差分功耗分析

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。

Differential Power Analysis against ARIA Block Cipher

This paper introduces theories which are based upon power consumption models and data-dependent power consumption and presents the methods and steps of differential power analysis in detail.We use DPA attack on Block Cipher ARIA by S-box lookup table in the operating leak and correct secret key of encryption algorithm is cracked successfully with simulating experiments.Experiment results demonstrate that ARIA is vulnerable to DPA attack by nonlinear S-box lookup table in the operating leak.Simulation environment of 800 samples are enough to recover forward four round key,and then the 128 bit master key can be obtained by key expansion algorithm.