计算机工程与设计
計算機工程與設計
계산궤공정여설계
COMPUTER ENGINEERING AND DESIGN
2015年
4期
872-878
,共7页
多图像同步加密%角度旋转复用技术%率失真控制%结构相似度%熵模型%串扰效应
多圖像同步加密%角度鏇轉複用技術%率失真控製%結構相似度%熵模型%串擾效應
다도상동보가밀%각도선전복용기술%솔실진공제%결구상사도%적모형%천우효응
multi-images simultaneous encryption%rotation angle multiplexing technology%rate distortion control%structural similarity%entropy model%crosstalk effects
为对多图像进行同步加密，解决当前多图像加密算法因采用压缩思想导致的串扰效应，提出角度旋转复用技术耦合率失真优化控制的多图像同步加密算法。引入 DCT （discrete cosine transform）与 ZigZag 机制，基于角度旋转思想，设计复用技术，将多个明文转换成复合矩阵，借助 IDCT （inverse discrete cosine transform），形成置乱图像；设计率失真优化控制技术，嵌入复用技术中，减少失真度；构造加密函数，获取密文。仿真结果表明，该加密机制高度安全，与当前多图像加密机制相比，解密质量更高，失真度更小。
為對多圖像進行同步加密，解決噹前多圖像加密算法因採用壓縮思想導緻的串擾效應，提齣角度鏇轉複用技術耦閤率失真優化控製的多圖像同步加密算法。引入 DCT （discrete cosine transform）與 ZigZag 機製，基于角度鏇轉思想，設計複用技術，將多箇明文轉換成複閤矩陣，藉助 IDCT （inverse discrete cosine transform），形成置亂圖像；設計率失真優化控製技術，嵌入複用技術中，減少失真度；構造加密函數，穫取密文。倣真結果錶明，該加密機製高度安全，與噹前多圖像加密機製相比，解密質量更高，失真度更小。
위대다도상진행동보가밀，해결당전다도상가밀산법인채용압축사상도치적천우효응，제출각도선전복용기술우합솔실진우화공제적다도상동보가밀산법。인입 DCT （discrete cosine transform）여 ZigZag 궤제，기우각도선전사상，설계복용기술，장다개명문전환성복합구진，차조 IDCT （inverse discrete cosine transform），형성치란도상；설계솔실진우화공제기술，감입복용기술중，감소실진도；구조가밀함수，획취밀문。방진결과표명，해가밀궤제고도안전，여당전다도상가밀궤제상비，해밀질량경고，실진도경소。
To synchronously encrypt multiple images and solve the crosstalk effects induced by adopting the compression idea in existed multi-image encryption algorithms,the multi-image encryption algorithm based on multiplexing technology coupled rate distortion optimization control was proposed.The multiplexing technology was designed based on DCT (discrete cosine trans-form)and ZigZag mechanism,as well as the angle rotation idea was adopted to take multi-images into one composite matrix,and the composite permutation image was obtained by IDCT (inverse discrete cosine transform).The rate distortion optimization controlling technique was designed to embed into the multiplexing technology for reducing the distortion.The encryption function was constructed to diffuse the permutation image.Simulation results show that this encryption mechanism is highly secure,com-pared with current multi-image encryption algorithm,the decryption quality of this algorithm is better with lossless distortion.
