Netinfo Security ›› 2021, Vol. 21 ›› Issue (6): 45-51.doi: 10.3969/j.issn.1671-1122.2021.06.006

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Quantum Color Image Encryption Algorithm Based on Alternating Quantum Walk

LI Dan1(), YAN Ting1, GUO Rui2   

  1. 1. College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
    2. College of Communication and Information Engineering, Xi 'an University of Posts and Telecommunications, Xi’an 710061, China
  • Received:2020-11-26 Online:2021-06-10 Published:2021-07-01
  • Contact: LI Dan E-mail:lidansusu007@163.com

Abstract:

Confidential images need to be encrypted as securely as possible. In view of the fact that most of the classical image encryption algorithms only provide computational security, a quantum color image encryption scheme based on alternating quantum walk is proposed. The algorithm is an unconditional security quantum image encryption algorithm, which can resist quantum computer attacks in theory. In addition, complexity of the quantum circuit realized by the scheme is O(n+q), compared with the complexity O(2 2 n) required by classical image encryption. The efficiency is exponentially improved. And compared with quantum image encryption schemes, it has great advantages in security and resource consumption. So it has great potential applications in the future.

Key words: alternating quantum walk, quantum color image encryption, cryptographic secure pseudorandom number generator

CLC Number: