项目名称: 混沌密码及其应用于图像保护的关键技术和评测方法研究
项目编号: No.60873201
项目类型: 面上项目
立项/批准年度: 2009
项目学科: 金属学与金属工艺
项目作者: 邓绍江
作者单位: 重庆大学
项目金额: 31万元
中文摘要: 在本项目中,我们针对计划书的内容,围绕数字混沌的密码学特性、混沌图像加密技术、混沌Hash函数的构造等几个方面开展了深入的研究。对连续混沌映射的离散化通用方法开展了研究,掌握了基于离散混沌映射的独立同分布随机序列的产生机制;研究并实现了一些随机数发生器和基于离散混沌变换的安全替代及S盒构造;研究了数字混沌与图像等数字媒体内容加密、分析之间的联系,在对其他学者的学术成果进行深入分析的基础上提出了一些高效的混沌图像加密算法;研究了混沌分组密码的理论和通用设计方法,图像保护领域的混沌分组密码工作模式,根据“#26080;碰撞”#25490;列的概念提出了四叉树排列算法;对文本认证的核心-混沌Hash函数进行了系统深入的研究,总结出不同的混沌Hash函数的构造思路及基于混沌的Hash函数构造应该遵循的若干基本设计原则,并提出了一系列的混沌Hash构造方法,更重要的是创新性地提出了基于混沌理论的图像hash算法;对无线传感器网络的密钥管理及人体传感器进行了研究,提出了一种基于查找表映射Hash的无线传感器网络密钥预分配管理方案。
中文关键词: 混沌密码:图象保护:密码工作模式:评测体系
英文摘要: In this project, we have researched the features of chaotic cipher、chaotic image encryption and chaotic hash function according to the content of plan. Through the generalized means of chaos discretization researched, we have mastered the generation mechanism of independent and identically distributed random sequence based on discrete chaotic map; we have researched the generation of pseudo-random sequence by chaotic map, the secure substitution and S-box construction; we have researched the general means of chaotic image encryption based on in-depth analysis on the academic achievements of other scholars; we have researched the theory and general design method of chaotic block cipher. We proposed the quadtree structure sorting algorithm according to ‘ollision-free’based on the research of the chaotic block cipher mode in image protection; we deeply studied chaotic hash function and summed up the different construction ideas and basic design principles of constructing chaotic hash function; we proposed a series of chaotic hash structure method, and more importantly, we put forward the innovative image-based hash algorithm based on chaos theory; we also researched the key management of WSN and BSN, and proposed the pre-distribution key management based on look-up table mapping hash.
英文关键词: chaotic cipher;image protection;cipher mode;evaluation system