A Novel Octuple Images Encryption Algorithm Using Chaos in Wavelet Domain

  • Musheer Ahmad
  • Bashir Alam
  • Arpit Jain
  • Vipul Khare
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 131)

Abstract

The advancements in the network and multimedia technologies have made information security more exigent and demanding. It brings new challenges to develop security methods that are credential enough to encrypt a number of images and generate a single encrypted image containing the information of all plain-images. Here, we propose a novel image encryption algorithm which has the efficacy of encrypting eight distinct plain-images simultaneously. Low frequency components of plain-images are selected and processed. The algorithm makes use of three chaotic systems to get visual effect of disorder, distorted and indistinguishable single encrypted image. The encryption/decryption processing operations such as chaos-based circular rotation and random mixing of pixels are carried out in wavelet domains. The one-dimensional chaotic maps are used to generate two chaotic key images needed for circular rotation. A two-dimensional chaotic map is employed for randomly shuffling the coefficients matrix received after mixing. The performance of proposed algorithm is analyzed through experimentation against pixels correlation, peak signal to noise ratio, key sensitivity and key space. It is found that the simulation results validate the effectiveness of the proposed octuple images encryption algorithm.

Keywords

Octuple image encryption Security Chaotic systems Circular rotation Wavelet domain 

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Musheer Ahmad
    • 1
  • Bashir Alam
    • 1
  • Arpit Jain
    • 2
  • Vipul Khare
    • 3
  1. 1.Department of Computer Engineering, Faculty of Engineering and TechnologyJamia Millia IslamiaNew DelhiIndia
  2. 2.Department of Computer and Information Science and EngineeringUniversity of FloridaFloridaUSA
  3. 3.Department of Computer Science and Information TechnologyJaypee Institute of Information TechnologyNoidaIndia

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