加密算法及其应用研究

【作者】 徐荣峰；

【导师】 杜承烈；

【作者基本信息】 西北工业大学 ， 计算机科学与技术， 2006， 硕士

【副题名】基于椭圆曲线密码体制的加密邮件实现技术研究

【摘要】 随着网络技术的发展和应用范围的扩大,网上信息交换日趋频繁和重要,从而需要建立安全的信息系统。为此,需要研究和分析现有密码算法,并从中选择较适合的密码算法用于实际的信息传输应用系统。 本文较深入地研究并分析了当今流行的几种主要加密算法,包括对称加密算法、非对称加密算法和椭圆曲线密码技术,在算法软件实现的基础上进行了安全性能的实验分析和比较;作为论文的主要工作,开发了基于上:述密码算法的加密电子邮件系统,并进行了实例测试。作者的主要工作有: 1.主要对对称加密AES、非对称加密RSA和椭圆曲线密码体制ECC-MV等加密算法的安全性能和实现技术进行了研究。 2.设计了基于AES、RSA和ECC-MV等加密算法的组件框架,对三类加密算法进行优化组合,构建了该加密体系的总体结构及其DLL组件调用接口,并将其应用于加密电子邮件系统的设计与实现。 3.基于上述加密算法组件框架,把ECC-MV单算法组件、ECC-MV&AES(密钥发送用ECC-MV)、RSA&AES(密钥发送用RSA)算法组合的DLL动态连接库应用于所设计的加密电子邮件系统,进行了实际性能测试和结果分析比较。更多还原

【Abstract】 With the development and the ampliative applying-scope of network technology, the exchange of network information is more frequent and important, so we need to establish secure information system. Therefore, it is necessary to study and analyze some cryptogrammic arithmetics and select appropriate ones to apply in the practical information system.This dissertation analyzes the existing popular cryptogram arithmetic, including symmetry cryptogrammic arithmetic, unsymmetry cryptogrammic arithmetic and elliptical curve cryptogrammic technology, and investigates their security characteristics based-upon the software realizations of these arithmetics. As the main work of this dissertation, this paper develops an encrypted e-mail system, and performs some practical tests. The primary works are:1. Deeply research the security performance and realization technologies about the symmetry cryptogrammic arithmetics, the unsymmetry cryptogram arithmetic and the elliptical curve cryptogrammic arithmetic based on the elliptical curve encryption theory.2. Design a framework of encrypting arithmetic components based on AES,RSA, and ECC-MV methods, optimize and assemble these cryptogrammic arithmetics, construct the global structure of the system and the interfaces of DLL components for calling these arithmetics, and use these interfaces in the design and realization of the encrypted e-mail system.3. Based on the above encrypting arithmetic framework, apply the DDL library in the designed encrypted e-mail system, do some practical performance tests, and analyse their results.更多还原