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Partial Encryption on SPIHT Compressed Images

  • Nidhi Taneja
  • Balasubramanian Raman
  • Indra Gupta
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5909)

Abstract

Recently, Multimedia security paradigm has shifted towards encryption techniques combined with compression systems to meet the constraints of wireless networks. Several techniques of encryption with compression have been proposed to reduce processing time, but either they are insecure or computationally intensive. An efficient partial encryption technique based on SPIHT compressed bitstream is thus proposed to provide an efficient encryption for digital images. A satisfactory level of security is achieved with encryption of less than 0.5% of data for image encoded at 0.8 bpp by encrypting the bits as well as their locations. The proposed technique has large key space and can withstand approximation and brute force attacks.

Keywords

Vector Versus Enhancement Layer Cipher Image Encryption Technique Brute Force Attack 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Nidhi Taneja
    • 1
  • Balasubramanian Raman
    • 2
  • Indra Gupta
    • 1
  1. 1.Department of Electrical EngineeringIIT RoorkeeIndia
  2. 2.Department of MathematicsIIT RoorkeeIndia

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