The Research of A Digital Still Image Cryptosystem

Abstract

In this paper, based on the analysis of digital static images and general channel characteristics, a method of encrypting and decrypting digital static images using pseudo-noise and periodic transposition cipher technology is proposed. When it is transmitted to the receiving end, the public key RSA is used to encrypt the key for confidential transmission, and the CRC-CCITT cyclic redundancy detection code is used to check and code the key. Experiments show that the effect of image encryption and decryption is consistent with theoretical analysis; the realization of public key RSA and CRC-CCITT can better ensure the safe and reliable transmission of information on common channels