一种针对椭圆曲线密码算法点乘实现的新型水平攻击

Study on a Novel Horizontal Attack on ECC Point Multiplication

阐述对椭圆曲线密码算法的窗口法点乘实现进行安全性分析,提出一种新型水平攻击侧信道分析方法,即使在椭圆曲线密码算法点乘实现带有常规侧信道防护措施的情况下也能够完成攻击获取点乘计算中的敏感信息。在Sasebo-Gii评估板上对上述方法进行验证。实验表明,攻击者仅需要一条椭圆曲线点乘的功耗曲线就可以攻击出其中的密钥。基于这类攻击方法,给出了相关的防护方案。

This paper studies the security of ECC point multiplication with slide window method and proposes a novel horizontal attack on the implement.The attacker can exploit the sensitive information during ECC point multiplication by our method even when the implement is with protection.Experimental results based on Sasebo-Gii show a successful attack needs only one power consumption curve of ECC point multiplication.This paper also the countermeasure against the attack.