vb信息加密与隐藏工具的设计与实现.doc

分类号：TP309.2 U D C：D10621-408-(2007)5776-0 密 级：公 开 编 号：2003032028 成都信息工程学院 学位论文 信息加密与隐藏工具的设计与实现 论文作者姓名： 张磊 申请学位专业： 网络工程 申请学位类别： 工学学士 指导教师姓名（职称）： 韩斌（副教授） 论文提交日期： 2007年06月10日 信息加密与隐藏工具的设计与实现 摘 要 当今时代，随着电脑的普及应用和互联网的快速发展，网络中露出的安全问题引起普遍关注，网络的安全，完整性、可鉴别性和不可否认性 关键词：安全；加密；信息；隐藏 The Design and Implementation of an Information Encryption and Hiding Tool Abstract In modern times, with the universal application of computers and rapid development of the Internet, more people have paid attention to the security issues in the Internet. The security issues mainly refer to network information security, so it needs some protection measures and provides appropriate security services. As the protection measures of information security, the encryption and information hiding technology provides the functions of integration, authentication, and non-repudiation for the signing message. In some applications, it only needs to be verified by some recipients while keeping the message secret from public. This paper mainly researches the information encryption and hiding technology and introduces the application prospects of the information security. Based on the acquired knowledge, a simple information encryption and hiding tool is designed, and it provides the functions of encryption and information hiding, and the handing object refers to the text and picture. The symmetric encryption algorithm is applied into the text encryption while a picture is hidden in another picture. The purpose of this design is to make the application of information encryption and hiding in real life understood, as well as to describe the principles of the technology on the whole. In addition, the designing result can be applied into the teaching and experiments. Key words: security; encryption; information; hiding 目 录 论文总页数：23页 1 引言 1 1.1 课题背景 1 1.2 本课题研究意义 1 2 信息隐藏技术 1 2.1 信息隐藏简介 1 2.2 信息隐藏技术的分类 2 2.3 信息隐藏关键技术 3 2.4 信息隐藏的应用领域 3 3 加解密相关技术 4 3.1 密码学知识