J4 ›› 2015, Vol. 42 ›› Issue (4): 176-181.doi: 10.3969/j.issn.1001-2400.2015.04.029

• 研究论文 • 上一篇    下一篇

利用文本鲁棒特征的零知识水印安全检测方案

付章杰1,2;束建钢1,2;孙星明1,2;周璐1,2   

  1. (1. 南京信息工程大学计算机与软件学院,江苏 南京  210044;
    2. 南京信息工程大学 江苏省网络监控工程中心,江苏 南京  210044)
  • 收稿日期:2014-03-25 出版日期:2015-08-20 发布日期:2015-10-12
  • 通讯作者: 付章杰
  • 作者简介:付章杰(1983-),男,讲师,博士,E-mail: wwwfzj@126.com.
  • 基金资助:

    国家自然科学基金资助项目(61232016, 61173141, 61173142, 61173136, 61103215, 61373132, 61373133); 国家科技部(气象)行业科技专项资助项目(GYHY201206033)

Secure zero knowledge watermark detection scheme  based on the text robust feature

FU Zhangjie1,2;SHU Jiangang1,2;SUN Xingming1,2;ZHOU Lu1,2   

  1. (1. College of Computer and Software, Nanjing Univ. of Information Science and Technology, Nanjing  210044, China;
    2. Jiangsu Center of Network Monitoring Engineering, Nanjing Univ. of Information Science and Technology, Nanjing  210044, China)
  • Received:2014-03-25 Online:2015-08-20 Published:2015-10-12
  • Contact: FU Zhangjie

摘要:

数字水印的安全性不能完全依赖于算法或密钥本身.为了提高水印的安全性,笔者利用密码学中零知识证明的方法,提出一种基于非对称加密的文本零知识水印检测方案.该方案包括4个组成部分: 首先提出了一种文本鲁棒特征提取算法,使之能够有效地把不同文本区别开来; 然后把提取的特征作为水印信息产生的一部分,利用混沌映射产生水印信息;接着利用常见的文本水印方法嵌入到文本文档中去; 当发生版权争议时,验证者和证明者根据零知识水印检测协议来验证载体中是否存在水印.在水印检测时,该方案不会暴露有关水印的秘密而能检测出水印,使攻击者难以利用水印检测时的信息来修改、伪造或移去水印.在协议执行过程中,该方案没有暴露任何有关水印的秘密信息,提高了水印检测的安全性.

关键词: 数字水印, 零知识证明, 版权保护, 非对称加密

Abstract:

The security of a digital watermarking scheme must not depend on the watermarking algorithm itself or the embedding key. To improve the security of the digital watermarking scheme, the zero knowledge watermark detection (ZKWD) scheme based on asymmetric encryption is proposed for a plain text. The scheme consists of four components. Firstly, text features are extracted using the robust feature extraction method, and watermarking information is generated using the logistic chaotic map function. Then watermarking information is embedded into the original text medium using the common text watermarking method. When a copyright dispute occurs, the verifier and prover could verify the embedded watermark information according to the proposed ZKWD protocol based on asymmetric encryption. Using the method of zero knowledge proof, the watermark information could be detected without exposing the secrets related to the watermark, which makes the attacker unable to modify, forge or remove the watermark using the information obtained in the process of watermarking detection. The scheme does not leak any information to the verifier, and improves the security of watermarking detection.

Key words: digital watermarking, zero knowledge, copyright protection, asymmetric encryption

中图分类号: 

  • TP30912