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基于双混沌系统的带秘密密钥散列函数构造
  • 期刊名称：通信学报, Vol.27, No.9, pp.27-33, 2006.
  • 时间：0
  • 分类：TP309.2[自动化与计算机技术—计算机系统结构;自动化与计算机技术—计算机科学与技术]
  • 作者机构：[1]重庆大学计算机科学与工程学院,重庆400044, [2]重庆教育学院计算机与现代教育技术系,重庆400067
  • 相关基金：国家自然科学基金资助项目（60573047）;重庆市科委自然科学基金资助项目（CSTC200582286）;重庆市教委基金资助项目（kj051501）
  • 相关项目：基于混沌密码学的安全JPEG2000图像编码系统的设计和实现
关键词： 数据安全, 散列函数, 混沌, 逐段非线性映射, data security, Hash function, chaos, piecewise nonlinear map
中文摘要：

在对逐段非线性映射详细分析的基础上，提出一种用逐段非线性映射构造基于扰动的双混沌数字系统方法，然后建立一个基于双混沌系统的带秘密密钥的散列算法，算法以迭代初始点作为秘密密钥，以粗粒化的迭代轨迹作为其散列值。实验结果表明，这种算法具有对初值有高度敏感性、很好的单向性、弱碰撞性，较基于单一混沌映射的散列函数具有更强的保密性能，且实现简单。

英文摘要：

Analyzed the chaotic and cryptographic properties of a piecewise nonlinear map, a couple chaotic digital system was proposed based on perturbing which used the piecewise nonlinear, then a new approach to construct keyed Hash function was presented. The approach used the initial value of the couple chaotic system as the secret key and the coarse-graining trajectory as Hash values. Simulation results show that the chaotic keyed Hash function based on the couple chaotic system has good one-way, weak collision property, better security and it can be realized easily.

同期刊论文项目
基于混沌密码学的安全JPEG2000图像编码系统的设计和实现
期刊论文 68
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