查询词典 cryptography

RSA cryptography system is the easiest system to be understood among the public key cryptography systems and it's the most populer cryptography system in use. This paper will go into the RSA cryptography system and implement a small cryptosystem using Boland C++ to module the course of the RSA cryptography system.

RSA密钥体制是公开密钥体制中最容易理解，也是应用最广泛的一种加密方法，本文在深入研究RSA密钥体制的基础上，使用Boland C++实现了一个小型的RSA加密系统来模拟RSA算法的整个过程。

The quantum cryptography communication is the combination of classical cryptography theory and quantum mechanics.

量子密码通信是经典密码学与量子力学相结合的新兴交叉学科。

Keywords: distributed cryptography; provable security; composable security; threshold cryptography; secure multiparty computation

中文关键词：分布式密码；可证安全性；组合安全性；门限密码；安全多方计算

The first chapter of this paper explains the development of cryptography, tradition cryptogram, Public Key Cryptosystem and the future of cryptography.

第一章就密码学的发展，古典密码及公开密钥技术进行说明，并对未来密码系统的发展进行了展望。

ECC system makes use of the finite group of elliptic curve on the finite field instead of finite cyclic group used in the discrete logarithm problem. The theory of ECC is being studied a lot and it is the focus of the cryptography and the industrial estate, especially the technique of the implementation of ECC.In this thesis, the meaning of the information technology is discussed firstly, then we analyze the classical cryptography algoritham. After that, the mathematics base of elliptic curve cryptosytems are introduced, especially the theory of the finite field. As for some algorithms, we also give out the program of reliazation.

随后，介绍了研究椭圆曲线密码系统所需要的数学理论基础，特别是有限域中的椭圆曲线理论，并对相关的方法给出相应的实例及其程序实现；论文第三章讨论给出了椭圆曲线密码体制的研究现状，综述了椭圆曲线与现有一些密码算法的结合，介绍了椭圆曲线的离散对数问题以及椭圆曲线面临的攻击，详细描述了椭圆曲线密码系统的实现细节及各个部分的实验数据。

This book will focus on the core of Cryptography of issues, from the application point of view of discrete mathematics of cryptography on a system.

本书将重点集中放在密码学研究的核心问题上，从应用离散数学的角度对密码学进行了系统阐述。

Therefore, the proposed parallel algorithm can be applied to speed the selection of the base point of the elliptic curve cryptography over GF, improving the speed of encryption and decryption of ECC.

因此该算法可用于椭圆曲线密码(Elliptic Curve Cryptography， ECC)中基点的快速选取，从而提高ECC的加／解密速度。

E. Hellman ""New Direction in Cryptography"" in which put forward a kind of brand-new cryptology design thought, causing a revolution of cryptography, from but founded the new era of public key cryptography.

Hellman发表了"密码学中的新方向"一文，提出了一种崭新的密码设计思想，导致了密码学的一场革命，从而开创了公钥密码学的新纪元。

The book is divided into eight chapters, mainly introduced the super-elliptic curve cryptography algorithms of number theory based on hyperelliptic curve cryptography system, in addition to the core algorithm for computing sub-groups, from the ECC's technical standards to the super-elliptic curve cryptosystem implementation technology, but also on the super-elliptic curve cryptography and ECC and RSA in the security strength, complexity and the realization on the comparison.

全书共分八章，主要介绍了超椭圆曲线密码体制的算法数论基础、超椭圆曲线的密码学体系、除子群运算的核心算法、从ECC的技术标准到超椭圆曲线密码体制的实现技术，同时也对超椭圆曲线密码体制与ECC及RSA在安全强度、复杂度以及实现上进行了比较。

Quantum cryptology is a new method for secret communications. Compared to the classical cryptography, the greatest advantages of quantum cryptography are provable security and detectives; this is because the security of quantum cryptography is ensured by quantum no-cloning and Heisenberg's uncertainty principle that instead of relying on some complex mathematical problems.

量子密码技术是一种实现保密通信的新方法，它比较于经典密码的最大优势是具有可证明安全性和可检测性，这是因为量子密码的安全性是由量子物理学中量子不可克隆性和Heisenburg测不准原理来保证的，而不是依靠某些难解的数学问题。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。