计算机工程 ›› 2012, Vol. 38 ›› Issue (18): 97-99.doi: 10.3969/j.issn.1000-3428.2012.18.026

• 安全技术 • 上一篇    下一篇

最小化扭曲的抗检测隐写算法

刘 华,汤光明   

  1. (解放军信息工程大学电子技术学院,郑州 450004)
  • 收稿日期:2011-09-30 修回日期:2011-11-21 出版日期:2012-09-20 发布日期:2012-09-18
  • 作者简介:刘 华(1985-),女,硕士研究生,主研方向:信息隐藏;汤光明,教授、博士生导师
  • 基金项目:

    河南省信息安全重点实验室基金资助项目(09ISLB001)

Undetectable Steganographic Algorithm of Minimized Distortion

LIU Hua, TANG Guang-ming   

  1. (Institute of Electronic Technology, PLA Information Engineering University, Zhengzhou 450004, China)
  • Received:2011-09-30 Revised:2011-11-21 Online:2012-09-20 Published:2012-09-18

摘要: 为提高秘密数据传输的安全性,提出一种最小化扭曲的图像隐写算法。根据图像平滑特性及具体隐写嵌入操作对特性的影响为载体像素分配扭曲值,以表征在该像素上进行特定嵌入操作对图像总体统计特性的影响程度,再利用STC码选择使图像整体扭曲函数最小的嵌入位置和嵌入方式进行信息嵌入。仿真实验结果表明,该算法具有良好的抗检测性。

关键词: 信息隐藏, 隐写术, 隐写码, 扭曲函数, 平滑度, STC码

Abstract: In order to improve the security of secret data transmission, a steganographic algorithm of minimized distortion is proposed. In order to express the influence of the pixel modification on the whole statistic character, scalar values are assigned to every pixel based on smoothness and impact of different embedding mode on it. Embedding is actualized by choosing the proper embedding position and mode utilizing Syndrome-trellis Codes(STC). Experiments show that the proposed algorithm possesses a good undtetability.

Key words: information hiding, steganography, steganographic code, distortion function, smoothness, Syndrome-trellis Codes(STC)

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