multiset meaning in Chinese
多集
多重集合
Examples
- It is shown that the proposed refinement approaches have the commonly expected properties : the behaviour of the refined process can be inferred compositionally from the behaviour of the original process and from the behaviour of the processes substituted for actions ; the timed extensions of pomset partially ordered multiset trace equivalence and history preserving bisimulation equivalence are both congruences under the refinement ; the syntactic and semantic refinements coincide up to the aforementioned equivalence relations with respect to a cpo - based denotational semantics
然而，对于并发系统来说，时间指标是一个至关重要的因素，很多现实生活中的并发系统都跟时间密切相关，另外，紧急事件在实时并发系统中也是常见的现象，在已研究的动作精化理论当中紧急事件都仅仅只限于用来模拟超时事件，并且是不能被精化的，这对于很多现实系统来说是一个很大的限制。 - 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。 - Obviously rc6 is not square - like cipher . square attack can only attack few rounds of rc6 , because the data - rotations of rc6 affact the rules of propagation for active and passive words , which makes square attack ineffective . we analyse the square attack against serpent which is bit - oriented cipher , and the result shows that square attack on serpent is weak , because the bit - oriented linear operations interrupt the rules of propagation for active and passive multiset
我们将square攻击应用于rc6密码,发现square攻击只能攻击少数几轮rc6 ,这主要是因为rc6的数据依赖循环运算打乱了活动字节和固定字节的传播路径,使得攻击无法进行。我们分析了对serpent密码的square攻击, serpent密码的按比特线性混合运算打乱了所构造multiset的传播路径,使得攻击只能进行到3轮serpent密码。