Patent ID: 8184811
Filing Date: 2012-05-22
Classification: G06F,H04L,H04W

Abstract:
1. A content management method, comprising: receiving, from a mobile device, a combined hash associated with digital content; determining a user identifier associated with the mobile device; selecting a service provider key from among a plurality of service provider keys, the selection being made based on the user identifier, wherein the service provider key is the same for different user identifiers, and wherein the service provider key is unknown to a user of the mobile device; generating a benchmark hash by hashing together at least the user identifier and the service provider key; making a determination of whether the benchmark hash is the same as the combined hash; if the determination is that the benchmark hash is the same as the combined hash, then, directly in response to the determination, reporting to the mobile device that the user is authorized to use the content; and if the determination is that the benchmark hash is not the same as the combined hash, then, directly in response to the determination, reporting to the mobile device that the user is not authorized to use the content.