Privacy-preserving DRM

  title={Privacy-preserving DRM},
  author={Radia J. Perlman and Charlie Kaufman and Ray A. Perlner},
This paper describes and contrasts two families of schemes that enable a user to purchase digital content without revealing to anyone what item he has purchased. One of the basic schemes is based on anonymous cash, and the other on blind decryption. In addition to the basic schemes, we present and compare enhancements to the schemes for supporting additional features such as variable costs, enforcement of access restrictions (such as "over age 21"), and the ability of a user to monitor and… CONTINUE READING
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