功耗分析攻击中的功耗与数据相关性模型

在对密码设备进行功耗分析攻击时，攻击者需要建立密钥或者与密钥关联的数据值与被攻击设备的功耗相关性模型，藉此通过对功耗的分析破解出敏感信息。从攻击者的角度对器件功耗物理特性分析的基础上，重构了汉明距离模型和汉明重量模型，并从理论上证明了汉明重量模型的正确性，并建立起MCU功耗采集平台，验证了汉明重量模型的有效性和实用性。

Power model in power analysis attack

A mapping relation model should be established between data value and power value which is collected from device under attack when the power analysis attack accuse.The sensitive information can be fund through the power trace analysis using this type of relation.Hamming distance model and hamming weight model were described based on device’s physical characteristics.Furthermore,the correctness of hamming weight model was proved not only by Formula Derivation,but also by experiment under power consumption collection platform based on MCU.The experimental results show that hamming weight model is a valid and practicable model in power analysis attack.