密码算法芯片抗功耗攻击能力量化模型研究

提出了一种密码算法部件功耗信噪比模型,对模型进行了形式化证明,并在DES密码算法部件上进行了实验验证.理论和实验证明了该模型的有效性,通过该模型可以量化评估密码算法的抗功耗攻击能力.相比其他同类模型,此模型更简化,计算性能更高,同时对信噪比模型进行了相关拓展,可以扩展到功耗攻击的输入明文样本数来量化评估密码算法部件的抗功耗攻击能力.

A Quantied Model of Anti-attack Capability on Cipher-chip Power Consumption

SNR(Signal Noise Ratio) model of a cryptographic algorithm components was proposed. The formal proof and the experiment in DES cryptographic algorithm show that the model is effective. The proposed model can assess anti-Cipher-power attack capability, and can also be extended to quantify anti-power analysis attacks capability of the secret chip with the plaintext input.