CAJ | 학술논문

针对单一混沌系统安全性低、图像置乱与扩散无法抵御选择明文攻击及效率低等问题，在分析传统图像加密算法的基础上，提出一种多混沌系统图像加密方法。算法采用图像置乱与扩散相结合，引入Logistic 及Kent产生控制参数，设计了明密文相关的多轮加密策略。经过分析测试，算法具有更高的执行效率，两轮加密即可满足图像的安全性及实时性要求。
침대단일혼돈계통안전성저、도상치란여확산무법저어선택명문공격급효솔저등문제，재분석전통도상가밀산법적기출상，제출일충다혼돈계통도상가밀방법。산법채용도상치란여확산상결합，인입Logistic 급Kent산생공제삼수，설계료명밀문상관적다륜가밀책략。경과분석측시，산법구유경고적집행효솔，량륜가밀즉가만족도상적안전성급실시성요구。
In order to solve the problem that single chaotic system low-security,scrambling and diffusion can not resist the chosen plaintext attack and low efficiency,analysing the conventional image encryption algorithm,this paper presented a novel image encryption algorithm based on multiple chaotic systems.It combined image scrambling and image diffusion,selected Lo-gistic and Kent map generate control parameters and correlation the plain and cipher image with iterated times.Simulation re-sults and theoretical analysis show that the algorithm satisfies the requirements of the safety and real-time.