密码分析的

When we make use of linear cryptanalysis method, finding the best linear approximation of the encrypting algorithm is very important.

在线性密码分析方法中，寻找加密算法的最佳线性逼近是很关键的一步。

Bent function is a class of the highest nonlinearity Boolean function, and Boolean function is the key in the cipher system.

Bent函数是一类具有最高非线性度的布尔函数，布尔函数是对称加密密码体制设计和分析的关键。

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。

This is a dedicated machine cryptanalysis in World War II has been applied.

这是一种专用的密码分析机，在第二次世界大战中得到了应用。

In cryptanalysis , a pair of consecutive letters

密码分析中一对连缀的字母对。

In cryptanalysis, a triple of successive letters.

密码分析中的一组三个连续字母。

Lee's signcryption scheme with public verifiability is cryptoanalyzed and improved.

对Lee等提出的可公开验证签密方案进行了密码分析和改进。

To address this problem, a new method of security analysis of QKD protocols is introduced. Based on the equivalence attack model of QKD protocols which is refered to Biham's proving, the protocol is divided into two parts: the body and the attack, then a Petri-net model of BB84 is obtained, and a security analysis is followed.

为了简化量子密码协议的安全性证明以及建立一种通用的证明方法，基于Petri 网提出一种量子密钥分配协议的形式化分析方法，根据Biham 的等效对称化攻击模型，将协议分为主体模型和攻击模型两部分，建立了BB84 协议的Petri 网模型，然后对模型进行安全性分析，分析结果表明， BB84协议是无条件安全的。

Because of its compactness, fineness and unambiguity, formal analysis of cryptographic protocol has been an efficient and correct method step by step.

形式化分析由于其精炼、简洁和无二义性逐步成为分析密码协议的一条可靠和准确的途径。

After amplying a 2.2kb fragment form the PPV-SC1 RF-DNA,we clone the fragment into pMD 18-T,named pTNSl.The whole sequence which is 1989 bp long was determined by sequencing, including the complete ORF of PPV-SC1 NS1 which encoding 662 amino acids.Alignment of pairs of sequence indicates that there are 98% and 99% similary with other porcine parvovirus strains Kresse and NADL-2, respectively. Multiple sequence alignment discloses that there are a few difference between ppv-scl nsl gene and other ppv nsl gene: A-G at 39nt,T-C at 153nt,A-G at 175nt, A-C at 1117nt, A-C at 1535nt .Alternative codon in ppv-scl nsl have distinctly different frequentfy by codonbias analysis at EMBOSS(http://genopole.toulouse.inra.fr/bioinfo/emboss). Thereis not distinct hydrophobicity and transmenbrane helices in ppv-scl nsl protein. Struction domain anslysis of PPV-SC1 NS1 protein indicate that there are a ATP/GTP-binding site motif A at 398-405,16 Protein kinase C phosphorylation site,21 Casein kinase II phosphorylation site,and 3 cAMP/cGMP-dependent protein kinase phosphorylation site.At the same time ,there is a same motif between ppv-scl nsl and Poxvirus D5 protein-like which may share in the same fuction which is necessary during virion duplication.

将PPV-SC1 NS1序列与其他PPV NS1基因进行多序列比对，结果显示，PPV-SC1 NS1与其他的PPV NS1的同源性较高，仅存在个别的差异，分别是第39位A→G，第153位T→C，第175位A→G，第1117位A→C，第1535位A→C；同源搜索比较表明，PPV-SC1与PPV NS1同源性可达98％、99％，与其他的细小病毒NS1基因也存在很大的保守性；密码子偏向性分析结果表明PPV-SC1 NS1基因在同一氨基酸的不同密码子的选择上存在一定的偏向性；PPV-SC1 NS1蛋白总体上说具有亲水性不存在明显的疏水性区段，用swiss TMPRED软件预测PPV-SC1 NS1的跨膜区，返回的结果并没有得到有显著意义的跨膜区的存在；根据基于motif数据库的结构域预测，PPV-SC1 NS1的第393-415位氨基酸残基存在潜在的ATP／GTP结合位点，该蛋白还存在16个蛋白激酶C磷酸化位点，21个酪蛋白激酶2磷酸化位点，3个cAMP-／cGMP依赖蛋白激酶磷酸化位点，PPV-SC1 NS1蛋白与POX_D5(痘病毒D5蛋白)具有一致的保守结构域，推测NS1可能与POX_D5有类似的功能。

What are your goals and strategies for growth?

你的成长目标和策略是什么？

And unto the angel of the church in Sardis write; These things saith he that hath the seven irits of God, and the seven star I know thy works, that thou hast a name that thou livest, and art dead.

3：1 你要写信给撒狄教会的使者，说，那有神的七灵和七星的，说，我知道你的行为，按名你是活的，其实是死的。