一种黑洞数和Logistic混沌序列的图像加密应用

图像加密技术是数字信息保护的一种有效手段。在信息技术的发展下，人们对图像信息安全性的要求越来越高。本文提出了一种基于黑洞数和Logistic混沌序列的图像加密算法。本算法通过对黑洞数的研究，利用黑洞数发生器产生伪混沌序列，将该序列作为初始参数代入logistic算法，产生混沌密钥流对图像进行加密。实验结果表明该方法运算速度快，产生的置乱和加密序列的安全性很高。

An Application in Image Encryption Algorithm By Black-Hole Numbers and Logistic Chaos Sequence

As the development of information technology, people need more security on image safety. Image encryption is an effective technology for the digital information protection. This thesis introduces a new image encryption algorithm based on Black-hole numbers and Logistic chaos sequence. By research the Black-hole number, it can have a chaos sequence and the chaos sequence which will be sent into Logistic algorithm as the initial parameters. Then the algorithm can generate chaotic key stream for image encryption. The result shows that the system runs fastly and security of the image encryption is very high.