An image encryption algorithm based on novel block scrambling scheme and Josephus sequence generator

This paper proposes a new image encryption algorithm using novel block-level scrambling scheme and bit-level filer diffusion technology. In order to increase the diversity of pseudo-random number generator (PRNG) and improve the security of encryption system, a new Josephus travel scheme is proposed in this paper. Then, based on the novel Josephus travel method, a novel block-level scrambling scheme and bit-vector diffusion operation are proposed to improve the encryption efficiency of the algorithm. Numerical simulation and comparison experiments shows that the proposed encryption algorithm has high security and faster encryption speed, and can resist various attacks.

Automated summary

This paper proposes a new image encryption algorithm that utilizes a novel block-level scrambling scheme and bit-level filter diffusion technology. By introducing a new Josephus travel scheme, the diversity of the pseudo-random number generator (PRNG) is increased and the security of the encryption system is improved. In addition, a novel block-level scrambling scheme and bit-vector diffusion operation are used to enhance the encryption efficiency of the algorithm. Numerical simulation and comparison experiments demonstrate that the proposed encryption algorithm has high security, faster encryption speed, and resistance against various attacks.