摘要
为提高混沌通信系统的安全性能,在分段抛物映射基础上提出一种利用复合序列的混沌加密方案。该算法通过随机改变区间划分,克服了现有混沌映射的局限性,提高了混沌序列的复杂度.对图像信息加密的理论分析和仿真结果表明,该方案有较高的保密性能,可抵御多种类型的攻击,并扩大了密钥空间.
To improve the security features of chaotic communication system , a chaotic encryption scheme was developed based on piecewise parabolic map, and composite sequence was used. The scheme overcomes the limitation of current chaotic map through stochasticly changing the interval division, and the complexity of chaotic sequence was improved. Simulations on image encryption show that the scheme has excellent security features to fight back some kinds of attacks, and enlarges the key space.
出处
《大连海事大学学报》
EI
CAS
CSCD
北大核心
2008年第2期53-56,60,共5页
Journal of Dalian Maritime University
基金
国家自然科学基金资助项目(60671061)
关键词
混沌加密
分段抛物映射
复杂度
安全性能
chaotic encryption
piecewise parabolic map
complexity
security features
