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
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"title_en": "Privacy-Preserving DRM",
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"date": "2010-04-13",
"date_original": "April 13, 2010",
"url": "https://www.nist.gov/publications/privacy-preserving-drm",
"source": "NIST Publications",
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"authors_en": "Radia Perlman, Charles Kaufman, Ray Perlner",
"abstract_excerpt_en": "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",
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{
"title_en": "Privacy-Preserving DRM",
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