title: Novel image encryption based on quantum walks.
abstract: Quantum computation has achieved a tremendous success during the last decades. In this paper, we investigate the potential application of a famous quantum computation model, i.e., quantum walks (QW) in image encryption. It is found that QW can serve as an excellent key generator thanks to its inherent nonlinear chaotic dynamic behavior. Furthermore, we construct a novel QW-based image encryption algorithm. Simulations and performance comparisons show that the proposal is secure enough for image encryption and outperforms prior works. It also opens the door towards introducing quantum computation into image encryption and promotes the convergence between quantum computation and image processing.
authors.affiliation: 1] College of Computer Science and Technology, Beijing University of Technology, Beijing 100124, China [2] State Key Laboratory of Information Security (Institute of Information Engineering, Chinese Academy of Sciences, Beijing 100093).
authors.forename: Yu-Guang
authors.initials: YG
authors.lastname: Yang
authors.affiliation: College of Computer Science and Technology, Beijing University of Technology, Beijing 100124, China.
authors.forename: Qing-Xiang
authors.initials: QX
authors.lastname: Pan
authors.affiliation: College of Computer Science and Technology, Beijing University of Technology, Beijing 100124, China.
authors.forename: Si-Jia
authors.initials: SJ
authors.lastname: Sun
authors.affiliation: College of Computer Science and Technology, Beijing University of Technology, Beijing 100124, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Xu