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| 一种用户受限的数字指纹编码方法 | |
| 引用本文： | 余永升,程金树,魏志华,陈晓苏.一种用户受限的数字指纹编码方法[J].华中科技大学学报(自然科学版),2012,40(10):5-8. |
| 作者姓名： | 余永升 程金树 魏志华 陈晓苏 |
| 作者单位： | 1. 武汉理工大学绿色建筑材料与制造教育部工程研究中心,湖北武汉430070 华中科技大学计算机科学与技术学院,湖北武汉430074 2. 武汉理工大学绿色建筑材料与制造教育部工程研究中心,湖北武汉,430070 3. 华中科技大学计算机科学与技术学院,湖北武汉,430074 |
| 基金项目： | 国家高技术研究发展计划资助项目(2007AA01Z309);中央高校基本科研业务费专项资金资助项目(2012-IV-058) |
| 摘 要： | 针对用户数量受限的应用环境，给出一种以一系列小的BIBD（balancedincompleteblockdesign）关联矩阵取补转置得到的编码矩阵，替代单位标准正交阵中的非零元素构成2层的级联码，与混沌序列异或，并根据合谋假设计算并重复码字后分配给分组用户的数字指纹方案．基于该方案，研究了分组编码的区块矩阵的大小对编码抗合谋攻击的影响，讨论了用户分组的合理性原则．实验表明：选取大小相近的内码矩阵块并设置相对均衡的用户分组，对提高指纹编码的抗合谋攻击能力和编码效率有着积极的作用． |
| 关 键 词： | 数据安全 图像处理 数字水印 数字指纹 泄密者追踪 分组方案 |
User-limited digital fingerprint code scheme |
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| Yu Yongsheng,Chen Jingshu,Wei Zhihua,Chen Xiaosu.User-limited digital fingerprint code scheme[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2012,40(10):5-8. | |
| Authors: | Yu Yongsheng Chen Jingshu Wei Zhihua Chen Xiaosu |
| Institution: | 1(1 The Green Building Materials and Manufacturing Engineering Research Center of Ministry of Education,Wuhan University of Technology,Wuhan 430070,China;2 School of Computer Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,China) |
| Abstract: | To study the applied environment with limited quantity of users,a serial small transposed matrixes of balanced incomplete block design was used in the digital fingerprint code method for limited users to replace the nonzero elements of unit matrix.A two-level code was built,and duplicates a few times based on the situation of collusion attacks and distributes to users was duplicated.Based on the scheme,the influence on the ability of anti-collusion attack brought from the size of block matrix was studied,and the principle of grouping users was analyzed.Research shows that it is helpful to improve the anti-collusion ability of the codeword and efficiency of encoding by choosing similar size block matrix and setting balanced users′ groups. |
| Keywords: | security of data image processing digital watermarking digital fingerprint trace traitor grouping method |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |