A Selective Video Encryption Scheme for MPEG Compression Standard

  • LIU Gang
    Graduate School of Information, Production and Systems, Waseda University
  • IKENAGA Takeshi
    Graduate School of Information, Production and Systems, Waseda University
  • GOTO Satoshi
    Graduate School of Information, Production and Systems, Waseda University
  • BABA Takaaki
    Graduate School of Information, Production and Systems, Waseda University

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With the increase of commercial multimedia applications using digital video, the security of video data becomes more and more important. Although several techniques have been proposed in order to protect these video data, they provide limited security or introduce significant overhead. This paper proposes a video security scheme for MPEG video compression standard, which includes two methods : DCEA (DC Coefficient Encryption Algorithm) and "Event Shuffle." DCEA is aim to encrypt group of codewords of DC coefficients. The feature of this method is the usage of data permutation to scatter the ciphertexts of additional codes in DC codewords. These additional codes are encrypted by block cipher previously. With the combination of these algorithms, the method provides enough security for important DC component of MPEG video data. "Event Shuffle" is aim to encrypt the AC coefficients. The prominent feature of this method is a shuffling of AC events generated after DCT transformation and quantization stages. Experimental results show that these methods introduce no bit overhead to MPEG bit stream while achieving low processing overhead to MPEG codec.

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詳細情報 詳細情報について

  • CRID
    1571980077385966592
  • NII論文ID
    110003486122
  • NII書誌ID
    AA10826239
  • ISSN
    09168508
  • 本文言語コード
    en
  • データソース種別
    • CiNii Articles

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