@inproceedings{0eb5220819564d61b2ca2285f3543205,
title = "Privacy-preserving digital rights management",
abstract = "DRM systems provide a means for protecting digital content, but at the same time they violate the privacy of users in a number of ways. This paper addresses privacy issues in DRM systems. The main challenge is how to allow a user to interact with the system in an anonymous/pseudonymous way, while preserving all security requirements of usual DRM systems. To achieve this goal, the paper proposes a set of protocols and methods for managing user identities and interactions with the system during the process of acquiring and consuming digital content. Furthermore, a method that supports anonymous transfer of licenses is discussed. It allows a user to transfer a piece of content to another user without the content provider being able to link the two users. Finally, the paper demonstrates how to extend the rights of a given user to a group of users in a privacy preserving way. The extension hides the group structure from the content provider and at the same time provides privacy among the members of the group.",
author = "C. Conrado and M. Petkovic and W. Jonker",
year = "2004",
doi = "10.1007/978-3-540-30073-1_7",
language = "English",
isbn = "3-540-22983-3",
series = "Lecture Notes in Computer Science",
publisher = "Springer",
pages = "83--99",
editor = "W. Jonker and M. Petkovic",
booktitle = "Proceedings of the Secure Data Management (SDM 2004), 30 August 2004, Toronto, Canada",
address = "Germany",
}