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An enhanced encryption algorithm for video based on multiple Huffman tables

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Abstract

Encryption is one of the fundamental technologies that is used in the security of multimedia data. Unlike ordinary computer applications, multimedia applications generate large amount of data that has to be processed in real time. This work investigates the problem of efficient multimedia data encryption. A scheme known as the Randomized Huffman Table scheme was recently proposed to achieve encryption along with compression. Though this scheme has several advantages it cannot overcome the chosen plaintext attack. An enhancement of this Huffman scheme is proposed in this work which essentially overcomes the attack and improves the security. The proposed encryption approach consists of two modules. The first module is the Randomized Huffman Table module, the output of which is fed to the second XOR module to enhance the performance. Security analysis shows that the proposed scheme can withstand the chosen plaintext attack. The efficiency and security of the proposed scheme makes it an ideal choice for real time secure multimedia applications.

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Authors and Affiliations

  1. Department of ECE, Sri Manakula Vinayagar Engineering College, Puducherry, India

    L. M. Varalakshmi

  2. Department of ECE, Pondicherry Engineering College, Puducherry, India

    Sudha G. Florence

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  1. L. M. Varalakshmi
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  2. Sudha G. Florence
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Correspondence to L. M. Varalakshmi.

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Varalakshmi, L.M., Florence, S.G. An enhanced encryption algorithm for video based on multiple Huffman tables. Multimed Tools Appl 64, 717–729 (2013). https://doi.org/10.1007/s11042-011-0963-2

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  • DOI: https://doi.org/10.1007/s11042-011-0963-2

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