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.