查询词典 substitution cipher

ABSTRACT This thesis is devoted to the design and security analysis of block cipher systems.

本文主要研究迭代型分组密码体制的设计与安全性分析。

Still somehow, I could read, write, and cipher ...

还有一些话，我可以读，写和密码。。。

It's a telegram in cipher.

这是密码电报。

Ciphering information with Cipher technology is the most common and effective method.

军事通信的安全保密是国防建设中的重要问题，如何确保重要信息的安全也就成为各方关注的一个重点，采用密码技术对信息加密是最常用、最有效的安全保护手段。

DES, together with its ciphering algorithm, and basic theory of stream cipher are associated with, and the misled application of DES is also taken into account.

信息安全技术主要是研究计算机系统信息的机密性、完整性、可获取性和真实性，它的核心是加密技术。信息是一种资源，也是一种财富。

Article 38 The testing and evaluation work on passwords and ciphering equipments used for protecting information system security shall be undertaken by an evaluation agency authorized and admitted by the State Cipher code Administration.

第三十八条信息系统中的密码及密码设备的测评工作由国家密码管理局认可的测评机构承担，其他任何部门、单位和个人不得对密码进行评测和监控。

A new block cipher is designed where the diffusion of matrix multiplication is combined with the confusion of specially designed matrix operation to encrypt information.

设计了一种新的分组密码算法，该算法利用矩阵乘法的扩散作用与专门设计的一种矩阵运算的混乱作用实现对信息的加密。

In this paper we firstly discuss the general concepts of compter security and cryptology, and then describe the mostly used modern encryption methods and technologies. We detail the advantages and disadvantages of symmetric algorithm, public-key algorithm and one-way hash function. At last we put forward a new block cipher - permutation code, and describe the secret hash digital signature and online electronic contracting with the trusted third party system.

本文首先讨论计算机安全和密码学的一般概念，然后介绍现代加密手段常用的方法和技术，详细讨论了对称加密方法、公开密钥加密方法和单向散列加密方法的优点和不足，进而提出了一种新型的分组加密算法—排列码加密算法，并在此基础上实现了保密散列数字签名算法和有可信第三方参与的网上电子签约。

In order to cipher out sum of square and effect estimation of combining ability, transpose procedure, merge sentence and z=x + y, gi= 1/(p+2 *(hi-2*zh/p), sij = xij -/(p+2)+ 2*zh/(p+1 *(p + 2) etc. transformations are applied in this study .New data gather and varieties are produced from original data to meet the analysis by using the sentences of keep, file, infile, put,set and so on.Multiple comparison of combining ability effect is carried outin SAS system by using fuctions of probf (f,dfl,df2), probt, tinv and lag , transformations of LSD0.o5=ee*abstinv(px,dfe, LSD0.01=ee*abstinv(pj ,dfe , and conditional sentence of if, then.

主要须用到transpose过程，merge语句以及统计代换z=x+y、gi=1／(p+2*(hi—2*zh／p)和sij=xij-／(p+2)+2*zh／(p+1*(p+2)等算出各种配合力平方和及其效应估计；用语句keep、file、infile、put、set等通过原始数据资料产生各种新的数据集和变量以满足分析需要；利用概率函数probf(f，df1，df2)和probt，反概率函数tinv，延迟函数lag，LSD_(0.05)=ee*abstinv(px，dfe、LSD_(0.01)=ee*abstinv(Pj，dfe等几个统计代换，以及if、then条件语句等实现了配合力显著性测验和配合力效应之差的显著性测验。

It has important guidance significance for taking differential cryptanalysis to the design and analysis of stream cipher

这对于如何进一步把差分分析引入到流密码的设计和分析中具有重要的指导意义。

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。