Patent ID: 7921291
Filing Date: 2011-04-05
Classification: G06F

Abstract:
1. A method for releasing a data processing unit for processing project data of a project; comprising: requesting usage permission for using the data processing unit to process project data belonging to a predetermined project, the predetermined project data being cryptographically protected; transmitting the predetermined, cryptographically protected project data via a communication network to a usage-permission generating device; generating a first signature by signing the predetermined, cryptographically protected project data belonging to the project, the predetermined, cryptographically protected project data being signed by the usage-permission generating device; verifying the first signature for correctness; releasing the data processing unit to process the project data belonging to the project if the first signature is verified as correct; and assigning a client a plurality of value units for the release of the data processing unit for multiple projects, wherein the plurality of value units are devalued at a usage permission generating device in response to a request generated under usage of the verified first client signature for a usage right.