In recent years, the chaos based cryptographic algorithms have suggested some new and efficient way to develop secure fingerprint image encryption techniques. In this paper, a novel chaotic fingerprint images encryption scheme is proposed combining with shuttle operation and nonlinear dynamic chaos system. Firstly, a new image total shuffling operation is employed to shuffle the positions of image pixels in the spatial-domain. Then the discrete output signal of the nonlinear dynamic chaos system is preprocessed to confuse the relationship between the shuttled image and the cipher-image. The results of several experimental, statistical analysis and key sensitivity tests show that the proposed image encryption scheme provides an efficient and secure way for fingerprint images encryption and storage.
展开▼
