CAJ | 학술논문

针对图像在信息传播中安全性的问题，提出了基于图像像素值改变和位置置乱的混沌加密方法。该算法利用两个logistic方程，分别产生两个混沌序列。一个混沌序列对图像的像素值进行改变，另一个混沌序列对图像的像素位置置乱。选取两个不同的密钥，相比一维的logistic映射加密方法，实验表明该算法有更好的安全性能、更强的抗攻击能力以及良好的加密效果。
침대도상재신식전파중안전성적문제，제출료기우도상상소치개변화위치치란적혼돈가밀방법。해산법이용량개logistic방정，분별산생량개혼돈서렬。일개혼돈서렬대도상적상소치진행개변，령일개혼돈서렬대도상적상소위치치란。선취량개불동적밀약，상비일유적logistic영사가밀방법，실험표명해산법유경호적안전성능、경강적항공격능력이급량호적가밀효과。
For the information security of image transmission, the chaotic encryption algorithm based on image pixel values change and position scrambling was proposed in this paper. Using two logistic equations, two chaotic sequences were produced. A chaotic sequence was used to change the image pixel values, another to scramble image pixel positions. Choosing two different keys, compared with one-dimensional logistic map encryption method, experiment shows that the algorithm has better safety performance, stronger anti-attack capability and good encryption effect.