Computer and Modernization ›› 2011, Vol. 1 ›› Issue (3): 60-62.doi: 10.3969/j.issn.1006-2475.2011.03.016

• 图像处理 • Previous Articles     Next Articles

Binary Image Encryption Algorithm Based on Chaos and Walsh Transform

ZHANG Ya-hong1, LI Xin-wei2, CHEN Hui3   

  1. 1. Department of Computer Science and Technology, Guilin College of Aerospace Technology, Guilin 541004, China;2. Office of Education Administration, Guilin Medical University, Guilin 541004, China;3. College of Electronic Engineering and Automation, Guilin University of Electronic Technology, Guilin 541004, China
  • Received:2010-11-11 Revised:1900-01-01 Online:2011-03-18 Published:2011-03-18

Abstract: A binary image encryption algorithm based on chaos map and discrete Walsh transform is proposed. Firstly, chaos sequence is used to encrypt the image, then the encryption image is scrambled by the discrete Walsh transform, which can achieve high-strength encryption. The discrete Walsh transform can save computation time greatly. The simulation result shows that this algorithm has high quality of secrecy as well as short computation time.

Key words: image encryption, chaos map, discrete Walsh transform

CLC Number: