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计算机工程 ›› 2010, Vol. 36 ›› Issue (9): 131-133. doi: 10.3969/j.issn.1000-3428.2010.09.045

• 安全技术 • 上一篇    下一篇

基于PDF417条码的信息隐藏算法

晁玉海,刘连山,薛立勤,张秀娟,王 量,王志友   

  1. (山东科技大学信息科学与工程学院,青岛 266510)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-05-05 发布日期:2010-05-05

Information Hiding Algorithm Based on PDF417 Barcode

CHAO Yu-hai, LIU Lian-shan, XUE Li-qin, ZHANG Xiu-juan, WANG Liang, WANG Zhi-you   

  1. (College of Information Science and Engineering, Shandong University of Science and Technology, Qingdao 266510)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-05-05 Published:2010-05-05

摘要: 针对现有隐藏方法存在嵌入信息量少、鲁棒性差、安全性低的不足,提出一种改进的基于PDF417条码的信息隐藏算法。该算法对隐藏信息进行扩频和映射处理,根据PDF417条码自身结构特点,通过微调条码中的条和空将信息隐藏其中。实验结果表明,该算法隐藏的信息在经受打印扫描和污损攻击后,仍具有较高提取率。

关键词: PDF417条码, 信息隐藏, 扩频, 映射嵌入, 鲁棒性

Abstract: Aiming at shortages of little capacity of embedded information, bad robustness and low secrecy for existing hiding algorithm, this paper proposes an improved information hiding algorithm based on PDF417 barcode. The algorithm goes on spread spectrum and map hiding information, according to self-structure feature of PDF417, and then information is hidden into micro-barcode by modifying the configuration of bar and space. Experimental results show that this algorithm had better extraction ratio to attack of printing scan and damage.

Key words: PDF417 barcode, information hiding, spread spectrum, mapping embedded, robustness

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