Probabilistic encryption

Algorithm

Scheme (mathematics)

Chaotic

CHAOS (operating system)

Hash function

Computer security

Deterministic encryption

Lorenz system

Theoretical computer science

Encryption

Image processing

Computer science

Acoustics

Physics

Mathematics

Multiple encryption

Image (mathematics)

Plaintext

Key space

Mathematical analysis

Plaintext-aware encryption

Artificial intelligence

Digital image

Permutation (music)

Computer vision

Key (lock)

Nonlinear Dynamics

A novel and secure plaintext-related image encryption scheme is given in this paper using hyper-chaotic Lorenz system and hash function. In our scheme, we used the classical encryption architecture: permutation and diffusion. The initial conditions of hyper-chaotic Lorenz system which is employed in permutation and key stream generation algorithms are generated by information of the original image and initial key. Therefore, the encryption process has a strong relationship with plain image in the proposed scheme. So, our work performs excellently on resisting the known-plaintext attack. In addition, results of many widely used security analyses and comparisons with other works show that our work has outstanding security performance for the digital image communication.

A novel plaintext-related image encryption scheme using hyper-chaotic system