DES信息安全传递系统的设计与实现
本论文主要讨论了国内外密码学领域的研究现状，研究了网络通信数据加密技术以及密码学的原理，分析了网络数据安全研究的必要性，并阐述了数据加密在网络通信中的应用方案。最后用DES算法实现了对客户机/服务器进行加解密通信操作，以确保整个网络通信的传递安全。10481
关键词： DES；网络通信；加密技术；客户机/服务器；信息安全
The Design And Implementation Of Information Security Delivery System
Abstract: Along with the rapid development of network communication technology, has provided immeasurable changes for the quality of people’s life. While people are enjoying the great interest that information resources produce, severe trial is also on the way to challenge information security. Nowadays，users pay more attention to the secure transmission of information. What’s more, the information security is also the key of protecting everyone’s personal privacy.
This paper mainly summarizes the research in the field of cryptography and abroad situation, studying the technology of network communication data encryption and the principles of cryptography, analysing the necessity for network data security research, elaborating data encryption in the network communication applications eventually. To ensure the safety of the transmission network communication, have realized encryption and decryption operations on client/server through DES algorithm.
Keywords: DES; Network Communication; Encryption; Client / server; Information Security
目录
摘要 i
Abstract ii
目录 iii
1 绪论 1
1.1 研究的目的和意义 1
1.2 国内外研究水平 1
1.3 发展趋势 1
1.4 研究的方法和技术 2
1.5 研究的创新点 3
2 加密算法 4
2.1 对称密钥算法 5
2.2 公钥算法 5
2.3 对称密钥算法与公钥算法的比较 6
2.4 单向散列函数 7
2.5 加密算法的未来 7
3 需求分析和程序模块的设计 8
3.1 需求分析 8
3.2 通讯模块设计 8
3.3 数据DES加解密模块 10
3.3.1 DES算法原理 10
3.3.2 初始置换 13
3.3.3 DES轮结构 13
3.3.4 DES的S盒定义 15
3.3.5 DES加密算法的具体步骤 15
3.4 数据RSA加解密模块 16
3.4.1 RSA加密流程 16
3.4.2 RSA加密算法原理 16
3.4.3 RSA密钥产生 17
4 信息安全传递系统的实现 18
4.1 系统设计 18
4.2 通信模块的实现 18