Super-distribution of protected digital content
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United States of America Patent
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-
Sep 15, 2009
Grant Date -
May 4, 2006
app pub date -
Oct 21, 2005
filing date -
Aug 13, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Super distribution of protected digital content is disclosed. According to one embodiment of the invention previously purchased encrypted digital content is received from a purchaser of the digital content. The purchaser of the previously purchased encrypted digital content is different from the recipient of the encrypted digital content. A secure transmission is established with an authorization authority for decrypting the content. A first decryption key for decrypting at least part of the previously purchased encrypted content as permitted by the authorization authority is received from the authorization authority. The at least part of the previously purchased encrypted content is decrypted as permitted by the authorization authority.
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