Patent ID: 6850915
Filing Date: 2005-02-01
Classification: G06F

Abstract:
1. A method of controlling a distribution and/or use of computer-based objects including data collections and/or computer programs, the computer-based objects being stored in a server computer and made available on demand at least temporarily for a use in a client computer interconnected to the server computer via a data network, comprising the steps of: providing an user-specific access right indicator for granting a user an access right to a computer-based object depending on a user role; the user-specific access right indicator being digitally signed with a private signature key of an access rights administration entity; upon a user request for the computer-based object, transmitting the user-specific access right indicator to the client computer; sending a request to the server computer for a transmission of the computer-based object from the server computer to the client computer; validating the user-specific access right indicator in the server computer by a public signature key of the access rights administration entity for checking authorization of the request for the transmission of the computer-based object to the client computer; transmitting the computer-based object to the client computer after a successful validation of the user-specific access right indicator; and controlling access to the computer-based object in the client computer by a dedicated control program validating the user-specific access right indicator.