A novel chaos-based partial image encryption scheme using Lifting Wavelet Transform

Fadia Ali Khan, Jameel Ahmed, Jawad Ahmad, Jan Sher Khan, Fawad Ahmad, Vladimir Stankovic, Hadi Larijani

Research output: Contribution to conferencePaperpeer-review

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Depending on applications and specific security requirements, digital images can either be fully or partially encrypted. Partial encryption is one of the methods that reduces computational and processing cost. To achieve partial encryption, chaotic maps in combination with different transforms, like the Wavelet Transform (WT), Discrete Cosine Transform (DCT) and Lifting Wavelet Transform (LWT) are often used. Due to higher efficiency and fast processing, LWT is preferred over wavelet transform. In this paper, a novel partial image encryption scheme based on LWT, Secure Hash Algorithm (SHA-512), Logistic-sine chaotic map, TD-ERCS chaotic map and Substitution Box (S-Box) is presented. In comparison to other schemes, the proposed encryption technique is computationally efficient, secure and sensitive to initial key conditions.
Original languageEnglish
Number of pages2
Publication statusE-pub ahead of print - 17 Feb 2019
EventThe First International Nonlinear Dynamics Conference - Sapienza University of Rome, Rome, Italy
Duration: 17 Feb 201920 Feb 2019


ConferenceThe First International Nonlinear Dynamics Conference
Abbreviated titleNodycon
Internet address


  • digital images
  • encryption


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