基于LSB的图像隐写算法设计与实现
摘要
隐写术是在载体中嵌入秘密信息进行秘密传输的技术，是当前信息安全研究中极为活跃和重要的组成部分，是涉及信息安全、多媒体信号处理和模式识别等学科的交叉课题。本论文介绍了隐写术的概念，研究了隐写术的技术原理，阐述了隐写术的发展现状，分析和比较常用隐写术实现的技术，重点探讨了基于LSB的隐写术以及改进的随机间隔法、LSB、LSB MATCH，并用VC++程序实现这三种隐写方法。仿真实验结果表明：在信息隐藏容量不变情况下，LSB隐写术具有易实现、能肓取的特点，随机间隔位LSB隐写术具有更好的隐密性，LSB MATCH具有良好的抗隐写分析性能。
关键词：信息隐藏；隐写术； LSB；LSB MATCH
Abstract
Steganography is to embed secret information in the vector transmission of secret technology, is the current information security research is extremely active and important part of which is related to information security, multimedia signal processing and pattern recognition, cross-disciplinary subject. This paper introduces the concept of steganography to study the technical principle of steganography, described the development status of steganography, analysis, and more commonly used steganography to achieve the technology, focus on the LSB-based steganography, and improved random interval method, LSB, LSB MATCH, and with VC + + program to achieve these three steganographic methods. Simulation results show that: the same capacity in the case of information hiding, LSB steganography are easy to implement, can take the characteristics of blind, random interval-bit LSB steganography has better privacy, LSB MATCH has a good anti-implicit written analysis of performance.
Keywords: information hiding; steganography; LSB; LSB MATCH
