ECC算法的功耗分析研究

作者：赵 岚 日期：2007-08-31/span> 浏览：3757 查看PDF文档

                                                           ECC算法的功耗分析研究*
                                                                          赵 岚
                              （浙江大学 超大规模集成电路研究所，浙江 杭州 310027）

摘 要：随着旁道攻击方法的提出，在安全领域，就要求各类密码算法在实际应用时需要考虑抵抗此类攻击的能力。利用Simplepower功耗分析工具，对椭圆曲线密码（ECC）加密算法在GF(2m)域上的Montgomery标量乘法进行了抵抗，简单功耗分析（SPA）和差分功耗分析（DPA）的研究。结果表明，目前常用的Montgomery算法具有较好的抵抗SPA攻击的能力，但是对DPA攻击防护不够，从而得出ECC算法的实际应用还需要额外添加抗差分功耗分析的方法，以增强其抵抗DPA攻击的能力。
关键词：椭圆曲线密码；椭圆曲线离散对数问题；旁道攻击；差分功耗分析；简单功耗分析

                                       Research of poweranalysis to elliptic curve cryptography
                                                                                ZHAO Lan
                         （Institute of VLSI Design, Zhejiang University, Hangzhou 310027, China）

Abstract: After the development of sidechannel attack, these implementations in security area require more considerations to counteract these types of attacks. By using power analysis tool Simplepower, analysis was made to evaluate the security level of montgomery scalar multiplication on elliptic curve cryptography (ECC) when it was attacked by simple power analysis (SPA) and differential power analysis (DPA). The results show that Montgomery algorithm can prevent SPA attack while to DPA attack, it is less secure which mean extra methods should be used to protect against DPA.
Key words: elliptic curve cryptography (ECC); elliptic curve discrete logarithm problem; side channel attack; differential power analysis (DPA); simple power analysis （SPA)