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Multimedia digital rights management based on selective encryption for flexible business model

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Abstract

This paper proposes an advanced encryption of MP3 and MPEG-4 coder with a quality degradation-based security model. For the MP3 audio, the magnitude and phase information of modified discrete cosine transform (MDCT) coefficients is encrypted. DCT coefficients and motion vectors (MVs) are used for the scrambling of the MPEG-4 video. This encryption scheme has a level of security, secures in perception, keeps format compliance, and obtains better time efficiency by reducing the encrypted volumes of multimedia contents. These properties make it practical to incorporate encryption and decryption process into compression and decompression process, and thus suitable for secure A/V transmission or sharing. Experimental results indicate that the proposed technique provides levels of security for a flexible business model and achieves a simple and coding-efficient architecture with no adverse impact on error resilience.

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Acknowledgments

This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No.2010-0008974). Correspondence should be addressed to Dr. Chun-Su Park (cspark@sejong.ac.kr)

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Authors and Affiliations

  1. Department of Information and Communication Engineering, Chosun University, 375 Seosuk-Dong, Dong-Gu, Gwangju, 501-759, South Korea

    Goo-Rak Kwon, Ramesh Kumar Lama & Jae-Young Pyun

  2. Department of Digital Contents, Sejong University, Seoul, South Korea

    Chun-Su Park

Authors
  1. Goo-Rak Kwon
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  2. Ramesh Kumar Lama
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  3. Jae-Young Pyun
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  4. Chun-Su Park
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Correspondence to Chun-Su Park.

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Kwon, GR., Lama, R.K., Pyun, JY. et al. Multimedia digital rights management based on selective encryption for flexible business model. Multimed Tools Appl 75, 6697–6715 (2016). https://doi.org/10.1007/s11042-015-2563-z

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  • DOI: https://doi.org/10.1007/s11042-015-2563-z

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