›› 2011, Vol. 24 ›› Issue (3): 1-.

• 论文 •    下一篇

基于DSP的混沌数字图像加密与硬件实现

徐小云,禹思敏,徐礼国   

  1. (广东工业大学 自动化学院,广东 广州 510006)
  • 出版日期:2011-03-15 发布日期:2011-03-11
  • 作者简介:徐小云(1986-),女,硕士研究生。研究方向:混沌理论与保密通信。徐礼国(1984-),女,硕士研究生。研究方向:混沌理论与保密通信。
  • 基金资助:

    广东省“211工程”基金资助项目(粤发改[431])

Chaotic Digital Image Encryption and its Hardware Implementation Based on DSP Technology

 XU Xiao-Yun, YU Si-Min, XU Li-Guo   

  1. (College of Automation,Guangdong University of Technology,Guangzhou 510006,China)
  • Online:2011-03-15 Published:2011-03-11

摘要:

介绍了在DSP基础上,实现数字图像的混沌加密及硬件实现方法。根据离散化和数字化处理技术,对三维Lorenz混沌系统作离散化处理,用C语言和DSP技术产生三维Lorenz混沌迭代序列,分别对数字图像的红、绿、蓝三基色信号进行混沌加密和解密。基于芯片型号为 TMS320VC5509A的DSP开发平台,以bmp格式的灰度图像为例,设计了Lorenz混沌序列对数字图像进行加密与解密算法,给出了DSP硬件实现结果表明,改善了安全性、提高了速度、满足了实时性要求。

关键词: Lorenz系统;图像加密;DSP;混沌加密;硬件实现

Abstract:

A novel method for realizing chaotic digital image encryption and its hardware implementation based on DSP is presented.By the discrete and digital process technology,the three-dimensional Lorenz chaotic system is made discrete and Lorenz chaotic iteration sequence is generated by using Hardware Description Language C and DSP technology.Red,green,and blue tricolor signals of the image are encrypted and decrypted,respectively.On the basis of the DSP exploitation platform with TMS320VC5509A chip,a gray image with an   BMP format is taken as an example.The digital image encryption and decryption algorithm using Lorenz chaotic sequence is designed,and DSP hardware implementation result is given.

Key words: Lorenz system;image encryption;DSP;chaos encryption;hardware implementation

中图分类号: 

  • TN910