计算机与现代化

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基于混沌序列的量子图像加密方案

  

  1. (东北石油大学计算机与信息技术学院,黑龙江大庆163318)
  • 收稿日期:2019-07-06 出版日期:2020-03-24 发布日期:2020-03-30
  • 作者简介:卢爱平(1977-),女,河南舞钢人,副教授,博士,研究方向:量子智能计算,量子图像处理,E-mail: lu_ap@sina.com; 通信作者:李盼池(1969-),男,教授,研究方向:量子智能计算,量子图像处理,E-mail: lipanchiemail@126.com。
  • 基金资助:
    国家自然科学基金资助项目(61702093); 东北石油大学引导性创新基金资助项目(2018YDL-20)

Quantum Image Encryption Scheme Based on Chaotic Sequence

  1. (School of Computer & Information Technology, Northeast Petroleum University, Daqing 163318, China)
  • Received:2019-07-06 Online:2020-03-24 Published:2020-03-30

摘要: 针对量子图像加密问题,设计一种基于混沌序列的加密方案。首先,采用NEQR模型描述量子图像,然后,采用3种混沌序列和受控旋转门使每个颜色比特随机旋转±π/4弧度,完成加密过程。解密时,首先根据密钥生成混沌序列,然后使每个颜色比特随机旋转π/4弧度即可。该方法加密后的直方图呈均匀分布,且密钥空间大,抗攻击能力强。经典计算机上的仿真结果表明该方法有较好的安全性。

关键词: 量子图像描述, 混度序列, 量子图像加密, 量子图像处理

Abstract: Aiming at the problem of quantum image encryption, this paper designs an encryption scheme based on chaotic sequence. Firstly, the NEQR (Novel Enhanced Quantum Representation) model is used to represent quantum images. Then, three chaotic sequences and controlled rotation gates are used to make each color qubit rotate randomly by ±π/4 radians to complete the encryption process. When decrypting, the chaotic sequence is first generated according to the secret key, and then each color qubit is rotated randomly by π/4 radians. The encrypted histogram is uniformly distributed, and the secret key space is large, the anti-attack ability is strong. The simulation results on the classical computer show that the method has better security.

Key words: quantum image representing, chaotic sequence, quantum image encrypting, quantum image processing

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