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Secure multimedia distribution in cloud computing using re-encryption and fingerprinting
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DOI：10.1007/s11042-018-6981-6.png)
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摘要
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Recently, cloud computing becomes a main platform for the distribution of multimedia content. The paradigm of multimedia distribution has been shifted from the models in traditional ways to the one in cloud computing. Security and privacy are two most important issues in multimedia distribution. The new model in cloud computing concerns the following issues. Firstly, outsourced content should be confidential except a data owner (DO). Secondly, the CSP is semi-trusted in the public cloud computing environment. A malicious data user (DU) may collude with the CSP to harm the DO's rights and interests. Thirdly, the rights and interests of DU, including anonymity and unlinkability, should be protected. Based on the above problems, we propose and analyze a Multimedia Distribution based Re-encryption and Fingerprinting (MDRF) scheme in cloud computing. The proposed scheme 1) allows efficient distribution of the content while preserving security and privacy of copyright holders and end users, 2) resolve the problems of piracy tracing, collusion resistance, and dispute resolution, and 3) protect the rights and interests of DU, including anonymity and unlinkability. The analysis part demonstrates that the security of DO and DU are well provided in the proposed scheme. The experimental results evaluate the performance of our framework in terms of collusion resistance of the fingerprint and imperceptibility of fingerprint embedding.
Keyword:
Re-encryption
Fingerprint
Cloud computing
Multimedia distribution
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3.2W
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