Digital rights management retrieval system

摘要

A digital rights management retrieval system is provided. In some embodiments, a digital rights management system includes receiving a first notification from a first client device of a first protected content transaction for a first user with a first content distributor, wherein the first notification includes a first network address for the first content distributor; receiving a second notification from the first client device of a second protected content transaction by the first user with a second content distributor, wherein the second notification includes a second network address for the second content distributor; and maintaining a first list of content distributors for the first user, wherein the first list includes a network address for each content distributor from which the first user has downloaded protected content.

主权项

1. A method comprising:
digitally signing, by a digital rights management system, a certificate with a private key in response to receiving a credentials request for a user from a client device via a data network, wherein the signed certificate is usable by the client device for authentication with multiple unaffiliated content distributors; transmitting, by the digital rights management system, the signed certificate and a public key to the client device via the data network, wherein the public key corresponds to the private key; receiving, by the digital rights management system, an unsigned license for digital content from a content distributor that has authenticated the client device using the signed certificate; digitally signing, by the digital rights management system, the license by using the private key to encrypt a portion of the license, wherein the encrypted portion is decryptable by the client device using the public key provided to the client device with the signed certificate; and transmitting, by the digital rights management system, the signed license to the content distributor, wherein the signed license authorizes use of the digital content by the client device.