Paper 06

SCENARIOS FOR SECURING CONTENT DELIVERY IN THE DRM ENVIRONMENT

Antonius Cahya Prihandoko, Hossein Ghodosi, Bruce Litow

Abstract. In the DRM environment, content is usually distributed in an encrypted form. Typically, a secure encryption algorithm is utilized to accomplish such a protection. However, executing such an algorithm in an insecure environment may allow adversaries to compromise the system and obtain information of the decryption key. Keeping such a key secret is a major challenge for the content distribution system. We consider two solutions for securing content delivery. Firstly, modifying the algorithm implementation in such a way to make the implementation unintelligible. Secondly, setting a buyer-seller protocol to communicate the key securely. In addition, the protocol can be set to achieve content provider’s security and protect users’ privacy. This paper provides a study on these scenarios for DRM applications w.r.t securing content delivery.

Keywords: Digital Rights Management, Code Obfuscation, White-box Cryptography, One-time Program, Oblivious Transfer.

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