查询词典 cryptanalysis

Linear cryptanalysis is one of the most important attacks of block cipher systems such as Feistel netowrks and substitution-permutation networks.

线性攻击法是针对区块加密系统的最重要的法法之一。

Chapter 5 deals with the cryptanalysis of stream ciphers.

本章最后证明了钟控序列的复杂度以概率1达到极大。

Block cipher; group encryption; S-box; SPN; AES; SAFER; CAST; RC6; differential ciyptanalysis; linear cryptanalysis; key schedule; keyed authentication code; Hash function

信息科技，电信技术，通信分组密码；群加密； S盒； SPN； AES； SAFER； CAST； RC6；差分密码分析；线性密码分析；密钥编排算法；加密认证码； Hash函数

To begin with, theory of FCSR and its sequence is summarized and investigated. Furthermore, emphasis is placed on the vaule of 2-adic complexity. A conclusion is drawn that the vaule lies in the relation between 2-adic complexity and lineai complexity of a same seqence. Fact that there exists sequence with high linear complexity but low 2-adic complexity is given and analyzed. The value of 2-adic complexity in cryptanalysis can be directly drawn from the very fact. A series of problems are opened based on the value and discussions are done in various depth. Some good results are obtained in these problems such as the 2-adic complexity distribution of periodic sequences and the stability of 2-adic complexity. The value of FCSR in stream cipher design is discussed at the same time.

首先对FCSR及其序列理论进行了系统的总结和研究，然后重点探讨了2-adic复杂度的流密码意义，通过论证表明，存在线性复杂度较大而2-adic复杂度较小的序列类，从而明确了2-adic复杂度的流密码分析意义，进而提出了一系列相关的研究问题并进行了不同深度的探讨，对其中周期序列的2-adic复杂度分布和2-adic复杂度的稳定性等问题得到了较好的结果；同时对FCSR的流密码设计意义进行了探讨，对其中的问题给出了一些思路或简单结论。

PKCS is an interface for public key cryptanalysis rasied by RSA Co.

他们往往为了换设备不得不修改已有的程序代码，使得后期的维护比较困难。

Some initial cryptanalysis and detailed statistical tests of SCF are given, the results show that SCF can resist some known cryptanalytic attacks and has excellent statistical properties.

并且对SCF作了一些初步的密码分析和详细的统计测试，结果表明：SCF密码足够抵抗一些已知的密码分析、具有很好的统计性能。

I can do simple painting, carpentry and plumbing.

我能做简单的油漆、木工和修水管等工作。

The motivations, notations and outline of this work are also given in this chapter.

从这个意义上讲，这些时滞是无害的。然后用实例说明这三个定理的应用和互不包含性。