基于魔方原则的图像加密算法研究

The Research on Image Encryption Algorithm Based on Rubik's Cube Principle

传统数字图像加密手段往往加密方法单一或者密钥空间小,容易被攻击。通过对秘密图像进行双重加密来提高信息传递的安全性。第一步是根据魔方映射原则置乱原有像素,扩大密钥空间。第二步是将置乱后的秘密图像按照本文提出的水印方法嵌入到一幅公开的图像中,增强隐蔽性。两步相结合大大提高信息传输的安全性,使魔方加密技术得到更好的推广。

Traditional digital image encryption is easily to be attacked,which is caused by single encryption approach and less key space.The secret image is double encrypted,which are divided into two steps.The first step is to expand the key space to disrupt the original pixel according to the principle of Rubik's cube mapping.The second step is to embed the secret image of disrupting into a public image according to the watermark method proposed in this paper to enhance the concealment.The combination of two steps greatly contributes to improve the security of information transmission,and to make the cube encryption technology get better promotion.