CAJ | 학술논문

为了提高保密图像传输安全性, 基于超混沌序列提出一种图像置乱与置换加密方案。根据明文像素信息对超混沌序列进行改造处理, 使得密钥序列对明文图像敏感, 再根据分离置乱密钥序列与灰度值置换密钥序列分别对图像像素执行置乱与置换操作。仿真结果表明, 加密图像灰度分布均衡, 密文对明文与密钥高度敏感, 可有效抵御统计、穷举、差分等多种攻击, 验证了方案的可行性。
위료제고보밀도상전수안전성, 기우초혼돈서렬제출일충도상치란여치환가밀방안。근거명문상소신식대초혼돈서렬진행개조처리, 사득밀약서렬대명문도상민감, 재근거분리치란밀약서렬여회도치치환밀약서렬분별대도상상소집행치란여치환조작。방진결과표명, 가밀도상회도분포균형, 밀문대명문여밀약고도민감, 가유효저어통계、궁거、차분등다충공격, 험증료방안적가행성。
In order to improve the security of secret image transmission, this paper put forward a kind of image encryption scheme based on hyper-chaotic sequences. Firstly, it added plaintext pixel information to the transformation of each element of hyper-chaotic sequences which resulted in both key sensitivity and plaintext sensitivity. Then, it shuffled and encrypted the plaintext pixels according to the separation scrambling key sequences and the gray replacement key sequences pixel by pixel. The simulation results show that the gray distribution of encrypted image is balanced with its cipher-text sensitive to plain-text and key, and it is secure with strong resistibility to various attacks, such as statistical, exhaustive and differential attacks, verifying the feasibility of this scheme.