Chaotic Sequence With 0-1 Random Matrix Image Encryption Technology Research And Implementation

With the coming of information age, the rapid development of network technology, various kinds of large information and multimedia digital products need to be transmitted through the Internet, it means that the protection of information security is particularly important. Therefore, in order to enhance the security of information, the digital image scrambling and encryption technology become an important technology for information encryption and protecting information security.At first, this paper examines the history of digital image scrambling and encryption technology and present situation of the development, introduced and analyzed the current digital image scrambling and encryption technology, as well as the development direction in the future. Algorithm of this paper is divided into two processes, scrambling and encryption process. Based on that the encryption algorithm has been mature, so this article focus on the image scrambling algorithm. Usually, to compare with the encrypted effect,the effect the traditional scrambling algorithm achieves after scrambling has a significant distance. Unlike some traditional scrambling algorithm, after scrambling the effect of the scrambling algorithm this paper proposes is close to the encrypted effect, this is the innovation of the algorithm.Algorithm’s implementation is that the algorithm generated respectively different chaotic sequence by Logistic equation, then generates different random matrix through different chaotic sequence. The generated random matrix is divided into two categories is the replacing random matrix and the reference random matrix. That is two purposes, scrambling and reference.The pixel value of scrambling matrix is specified as an integer between0and255, and the pixel value of the reference matrix is specified for only1and0. Then respectively each random matrix as the reference matrix, scrambling the position.Although in the process of program execution this algorithm comes at a cost in space and time, but the scrambling algorithm has obtained the good effect after the simulation and makes up for the shortage.