For further details contact: N.RAJASEKARAN B.E M.S 9841091117,9840103301. IMPULSE TECHNOLOGIES, Old No 251, New No 304, 2nd Floor, Arcot road , Vadapalani , Chennai-26. www.impulse.net.in Email: ieeeprojects@yahoo.com/ imbpulse@gmail.com

1. Impulse Technologies
Beacons U to World of technology
044-42133143, 98401 03301,9841091117 ieeeprojects@yahoo.com www.impulse.net.in
Privacy Enabled Digital Rights Management Without Trusted
Third Party Assumption
Abstract
Digital rights management systems are required to provide security and
accountability without violating the privacy of the entities involved. However,
achieving privacy along with accountability in the same framework is hard as these
attributes are mutually contradictory. Thus, most of the current digital rights
management systems rely on trusted third parties to provide privacy to the entities
involved. However, a trusted third party can become malicious and break the
privacy protection of the entities in the system. Hence, in this paper, we propose a
novel privacy preserving content distribution mechanism for digital rights
management without relying on the trusted third party assumption. We use simple
primitives such as blind decryption and one way hash chain to avoid the trusted
third party assumption. We prove that our scheme is not prone to the “oracle
problem” of the blind decryption mechanism. The proposed mechanism supports
access control without degrading user's privacy as well as allows revocation of
even malicious users without violating their privacy.
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