CAJ | 학술논문

为了提高彩色图像信息的安全性,针对单一混沌系统的不足,提出一种基于组合混沌系统的彩色图像加密算法。首先将明文图像变化成为红( R)、绿( G)和蓝( B)三个分量,并采用小波变换分别对R,G,B三个分量进行分解,然后采用不同混沌系统对R,G,B三个分量的低频系统分别进行置乱处理,并采用小波重构得到加密后R,G,B分量,最后对组合R,G,B进行随机排列,得到密文图像,并采用仿真实验测试算法的性能。仿真结果表明,相对其它彩色图像加密算法,本文算法获得了更加理想的图像加密效果,在提高密钥空间的同时,抗攻击能力得到大幅度提升。
위료제고채색도상신식적안전성,침대단일혼돈계통적불족,제출일충기우조합혼돈계통적채색도상가밀산법。수선장명문도상변화성위홍( R)、록( G)화람( B)삼개분량,병채용소파변환분별대R,G,B삼개분량진행분해,연후채용불동혼돈계통대R,G,B삼개분량적저빈계통분별진행치란처리,병채용소파중구득도가밀후R,G,B분량,최후대조합R,G,B진행수궤배렬,득도밀문도상,병채용방진실험측시산법적성능。방진결과표명,상대기타채색도상가밀산법,본문산법획득료경가이상적도상가밀효과,재제고밀약공간적동시,항공격능력득도대폭도제승。
In order to improve the security performance of color image, a novel color image encryption algorithm based on multi-chaotic system is proposed in this paper. Firstly, R, G, B components are obtained from original color image, and wavelet transform is used to decompose the R, G, B components, and then different chaotic systems is a_dopt to scramble the R, G, low frequency of three components and the wavelet transform is used to reconstruct encrypt_ed R, G, B component, finally, the R, G, B is combined randomly to get the encryption image, and the performance is test by simulation experiments. The results show that, compared with other color image encryption algorithms, the proposed algorithm can obtain a more ideal image encryption effect in improving the key space and greatly enhance the anti attack capability.