Adaptive Quantum Image Encryption Method Based on Wavelet Transform

Abstract

An adaptive quantum image encryption method based on wavelet transform is designed. Since the characteristic of most information is centralized in the low frequency part after performing the wavelet transform, it reserves the image low frequency information only, so as to reduce the encryption workload. Then it encrypts the low frequency information by the random key stream generated by logistic map, the encryption process is realized by implementing XOR operation. In the decryption process, it carries out zero filling operations for high frequency coefficient to recover the decryption images which are equal to the plain images. At the same time, the relevant quantum logical circuit is designed. Statistical simulation and theoretical analysis demonstrate that the proposed quantum image encryption algorithm has higher security and lower computational complexity. So it is adaptive to the scenes that need to encrypt a large number of images during network transmission.

The Review of Quantum Cryptographic Techniques for Image

“…These values were encrypted by quantum logical circuit with a random key stream generated by logistic map. Several statistical tests were introduced to prove the ability of the proposed method in providing high security and a low degree of distortion for the decrypted images [37]. In this paper, the combination between quantum theory and genetic algorithms was proposed in the field of image-encryption.…”