电子设计工程
電子設計工程
전자설계공정
Electronic Design Engineering
2015年
20期
31-33,37
,共4页
AES算法%列混淆%掩码%中间值%能量分析
AES算法%列混淆%掩碼%中間值%能量分析
AES산법%렬혼효%엄마%중간치%능량분석
AES algorithm%MixColumns%mask%intermediate values%power analysis
随着AES算法的推广应用,在资源受限的智能卡等嵌入式设备中,如何有效抵抗能量分析攻击,提高密码芯片的安全性,这一课题已引起了越来越多学者们的广泛关注. 本文针对该问题,提出了一种改进的固定值掩码防御方法.该方法在简单固定值掩码方法的基础上,增加另一组掩码值,在列混淆的过程中随机调用实现对状态矩阵的分行掩码,从而减小列混淆操作可能导致的掩码相互抵消,暴露中间值的可能性. 通过搭建能量分析平台进行实验分析,并与其他防御方法相比较分析,结果表明改进后的防御方法安全性更高,能够抵抗二阶差分能量分析攻击.
隨著AES算法的推廣應用,在資源受限的智能卡等嵌入式設備中,如何有效牴抗能量分析攻擊,提高密碼芯片的安全性,這一課題已引起瞭越來越多學者們的廣汎關註. 本文針對該問題,提齣瞭一種改進的固定值掩碼防禦方法.該方法在簡單固定值掩碼方法的基礎上,增加另一組掩碼值,在列混淆的過程中隨機調用實現對狀態矩陣的分行掩碼,從而減小列混淆操作可能導緻的掩碼相互牴消,暴露中間值的可能性. 通過搭建能量分析平檯進行實驗分析,併與其他防禦方法相比較分析,結果錶明改進後的防禦方法安全性更高,能夠牴抗二階差分能量分析攻擊.
수착AES산법적추엄응용,재자원수한적지능잡등감입식설비중,여하유효저항능량분석공격,제고밀마심편적안전성,저일과제이인기료월래월다학자문적엄범관주. 본문침대해문제,제출료일충개진적고정치엄마방어방법.해방법재간단고정치엄마방법적기출상,증가령일조엄마치,재렬혼효적과정중수궤조용실현대상태구진적분행엄마,종이감소렬혼효조작가능도치적엄마상호저소,폭로중간치적가능성. 통과탑건능량분석평태진행실험분석,병여기타방어방법상비교분석,결과표명개진후적방어방법안전성경고,능구저항이계차분능량분석공격.
With the popularization and application of the AES algorithm, in resource limited embedded devices, such as smart card, how to effectively resist power analysis attacks, and improve the security of cryptographic chip, this topic has aroused broad attention of more and more scholars. Aiming at this problem, this paper put forward an improved defense method that based on the fixed value masking scheme. The method need to add another group of mask values on the basis of the simple fixed mask method, in order to use different values to mask each row of the state matrix. In this way we can reduce the possibility of the occurrence of mask values may offset each other circumstances and exposure the intermediate values during the MixColumns operations. Through building a power analysis platform for experimental analysis, compared with other defense methods, results show that:the improved defense method has a higher security. It is able to resist second-order DPA attacks.
