A new unified image encryption algorithm based on a lifting transformation and chaos

Image encryption is one of the most effective means to ensure the security of image information in network communications. A new unified image encryption system with identical encryption and decryption algorithms was proposed in this paper. In this system, an external key and the Hénon map are used to generate the equivalent secret keys. Then, a kind of lifting-like transformation is employed to diffuse the image information to fulfill the image...