Associating policy with unencrypted digital content

摘要

A content license associated with unencrypted digital content is generated, the content license including both an identifier of the unencrypted digital content and a content policy. At a user device, a determination is made as to whether the content license corresponds to particular unencrypted digital content. Use of the particular unencrypted digital content by the computing device is permitted in accordance with the content policy if the content license corresponds to the particular unencrypted digital content. However, use of the particular unencrypted digital content by the computing device based on the content license is prohibited if the content license does not correspond to the particular unencrypted digital content.

主权项

1. A method comprising:
under control of one or more hardware processors with executable instructions: obtaining an identifier of unencrypted digital content, the identifier of the unencrypted digital content comprising a value generated by applying a hash function to one or more public keys used to generate digital signatures of one or more portions of the unencrypted digital content; generating a content license intended for a target device and associated with the unencrypted digital content, the content license including the identifier of the unencrypted digital content, an encrypted content binding key, and a content policy, the identifier of the unencrypted digital content and the encrypted content binding key usable to determine whether the content license corresponds to the unencrypted digital content, the generating including encrypting a content binding key with a public key of the target device, the content binding key usable to generate a content binding value for the unencrypted digital content by using the content binding key to encrypt the identifier of the unencrypted digital content; and communicating the content license to the target device, allowing the target device to use the unencrypted digital content only in accordance with the content policy in the content license associated with the unencrypted digital content.