Research on Digital Image Encryption Based on Chaotic Syste

With the continuous development of the information age, the speed of information dissemination is accelerating, the channels of dissemination are increasing, and the scope of dissemination is increasing, which has greatly improved our lives and brought a lot of convenience. But at the same time, the information technology has also brought many problems. The security of information is undoubtedly the top priority we should consider.If the security of information dissemination and storage is not guaranteed, personal privacy and national security will be greatly violated. In this situation, the level of information encryption technology is also rising. This paper studies the principle and application of digital image encryption algorithm. In this paper, the chaotic system based on logistic map is used to encrypt the image. Firstly, the related knowledge of chaos and cryptography is briefly introduced, and the principle and steps of digital image encryption are described; Furthermore, the encryption process is based on Logistic map, generating a group of chaotic sequences, which are XOR processed with the original image pixels to obtain a new image. Finally, the new image’s original content cannot be recognized by the naked eye, that is, the encrypted image, and the original image can be decrypted. By changing the key parameters, the encryption characteristics are studied to test the feasibility and practical application of the encryption algorithm.