计算机技术与发展
計算機技術與髮展
계산궤기술여발전
COMPUTER TECHNOLOGY AND DEVELOPMENT
2014年
8期
126-130
,共5页
AES%Feistel结构%WTS策略%依赖性测试%不可能差分分析
AES%Feistel結構%WTS策略%依賴性測試%不可能差分分析
AES%Feistel결구%WTS책략%의뢰성측시%불가능차분분석
AES%Feistel structure%WTS strategies%dependence test%impossible differential analysis
AES为新的数据加密标准,通过研究分组密码算法加密的整体结构和AES加密算法,文中设计了一种基于Feistel结构和WTS策略的分组密码算法FWTS。 FWTS采用Feistel结构,轮函数借鉴AES的WTS策略,分组长度为256 bits,密钥长度为128 bits,192 bits,256 bits。通过依赖性测试表明,FWTS算法4轮充分满足雪崩效应、严格雪崩准则和完备性。通过不可能差分分析,FWTS算法的6轮不可能差分所需的时间复杂度要大于AES算法的6轮不可能差分的时间复杂度。FWTS算法的安全性不低于AES算法。通过效率测试表明FWTS的加密效率要高于AES。
AES為新的數據加密標準,通過研究分組密碼算法加密的整體結構和AES加密算法,文中設計瞭一種基于Feistel結構和WTS策略的分組密碼算法FWTS。 FWTS採用Feistel結構,輪函數藉鑒AES的WTS策略,分組長度為256 bits,密鑰長度為128 bits,192 bits,256 bits。通過依賴性測試錶明,FWTS算法4輪充分滿足雪崩效應、嚴格雪崩準則和完備性。通過不可能差分分析,FWTS算法的6輪不可能差分所需的時間複雜度要大于AES算法的6輪不可能差分的時間複雜度。FWTS算法的安全性不低于AES算法。通過效率測試錶明FWTS的加密效率要高于AES。
AES위신적수거가밀표준,통과연구분조밀마산법가밀적정체결구화AES가밀산법,문중설계료일충기우Feistel결구화WTS책략적분조밀마산법FWTS。 FWTS채용Feistel결구,륜함수차감AES적WTS책략,분조장도위256 bits,밀약장도위128 bits,192 bits,256 bits。통과의뢰성측시표명,FWTS산법4륜충분만족설붕효응、엄격설붕준칙화완비성。통과불가능차분분석,FWTS산법적6륜불가능차분소수적시간복잡도요대우AES산법적6륜불가능차분적시간복잡도。FWTS산법적안전성불저우AES산법。통과효솔측시표명FWTS적가밀효솔요고우AES。
AES is the advanced data encryption standard. A block cipher based on Feistel structure and WTS strategies named FWTS is designed by studying the overall structure of the block cipher and AES algorithm. FWTS algorithm adopts Feistel structure and its round function refers to WTS strategies of AES encryption. The block size of FWTS is 256 bits,the key size is 128 bits,192 bits,256 bits. De-pendence test shows that FWTS algorithm fully satisfies the avalanche effect with 4-round. Impossible differential analysis with 6-round presents that FWTS algorithm has a higher time complexity than AES. The security of FWTS algorithm is not lower than AES. The effi-ciency test shows that FWTS algorithm has a higher efficiency compared with AES.
