attack vt. 1.攻击 (opp. defend)。 2.非难,抨击。 3.着手,动手,投入。 4.(疾病)侵袭。 5.【化学】腐蚀。 We will not attack unless we are attacked; if we are attacked, we will certainly counter- attack。 人不犯我,我不犯人;人若犯我,我必犯人。 attack a task 动手工作。 attack a problem 着手解决问题。 Strong acids attack metals. 强酸对金属有腐蚀作用。 be attacked with (a disease) 害(病)。 n. 1.攻击 (opp. defense), 袭击。 2.抨击。 3.【航空】迎角,冲角,攻角。 4.着手,动手。 5.发作,发病。 6.(表演或竞赛中的)主动。 A- is the best defense. 进攻是最好的防御。 an attack formation 攻击队形。 have an attack of 为…所侵袭;害,患(病)。 make an attack on 攻击。 n. -er 攻击者。
Improved collision attack on hash function md5 md5-hash函数的碰撞攻击的改进
Our study concentrates on the birthday attack, the length extension attack, the differential analysis, the message modification method, the multi-collision attack, the fixed point attack and the neutral bit attak 重点介绍了其中几种起关键作用的攻击技术:生日攻击、长度扩展攻击、差分分析技术、多冲突攻击、消息修改技术、固定点攻击和不相关位攻击技术。
The design and analysis of block ciphers are the hotspots in the field of information security . recently people presented multiset attack which includes square attack 、 collision attack and integral attack to attack block cipher with square-like structure . later multiset attack is also used to attack block ciphers whose structure is not square-like . this paper discusses basic theory, methods, application of the multiset attack 分组密码的设计与分析是目前信息安全领域中的热点问题,新出现的分组密码基本上都采用了结构非常清晰的sp网络结构,针对这种结构的分组密码,人们提出了multiset攻击,包括square攻击、碰撞攻击和积分攻击。
The additional operation to pad 0 or 1 to the beginning of the message blocks makes the length extension attack not to be work . the method to construct the encryption block based on aes makes the algorithm stay safe under the differential cryptanalysis . the secure domain extension method makes it resist on the multi-collision attack 算法附加的填充操作使它能抵抗长度扩展攻击、所采用的基于aes的加密模块使它能抵抗差分分析、采用的安全的域扩展使它能抵抗多冲突攻击、采用的安全pgv方案使它能有效抵抗固定点攻击;总体上,它能达到
In 2001, rijndael is declared to be the new aes . gilbert h and minier m presented collision attack on rijndael whose plaintext block length is 128 bits, which can attack 7 round rijndael-192 / 256 with attack complexity 2140 . in this paper we analyse collision attack on rijndael and make use of the shortcomings of rijndael ’ s key schedule to improve collision attack . the improvement makes 7 rounds of rijndael-128 be broken successfully and attack complexity is 2124 gilberth和minierm针对明文分组长度为128比特的rijndael提出了碰撞攻击,可以攻击7轮rijndael-192/256,攻击复杂度为2140。我们分析了对rijndael实施的碰撞攻击,并根据rijndael密钥扩展算法的特点,对碰撞攻击的算法进行了改进,使得该攻击可以攻击7轮rijndael-128,攻击复杂度为2124,低于穷尽攻击。
In 2001, rijndael is declared to be the new aes . gilbert h and minier m presented collision attack on rijndael whose plaintext block length is 128 bits, which can attack 7 round rijndael-192 / 256 with attack complexity 2140 . in this paper we analyse collision attack on rijndael and make use of the shortcomings of rijndael ’ s key schedule to improve collision attack . the improvement makes 7 rounds of rijndael-128 be broken successfully and attack complexity is 2124 gilberth和minierm针对明文分组长度为128比特的rijndael提出了碰撞攻击,可以攻击7轮rijndael-192/256,攻击复杂度为2140。我们分析了对rijndael实施的碰撞攻击,并根据rijndael密钥扩展算法的特点,对碰撞攻击的算法进行了改进,使得该攻击可以攻击7轮rijndael-128,攻击复杂度为2124,低于穷尽攻击。
In 2001, rijndael is declared to be the new aes . gilbert h and minier m presented collision attack on rijndael whose plaintext block length is 128 bits, which can attack 7 round rijndael-192 / 256 with attack complexity 2140 . in this paper we analyse collision attack on rijndael and make use of the shortcomings of rijndael ’ s key schedule to improve collision attack . the improvement makes 7 rounds of rijndael-128 be broken successfully and attack complexity is 2124 gilberth和minierm针对明文分组长度为128比特的rijndael提出了碰撞攻击,可以攻击7轮rijndael-192/256,攻击复杂度为2140。我们分析了对rijndael实施的碰撞攻击,并根据rijndael密钥扩展算法的特点,对碰撞攻击的算法进行了改进,使得该攻击可以攻击7轮rijndael-128,攻击复杂度为2124,低于穷尽攻击。