Manipulating rights-to-execute in connection with a software copy protection mechanism
November 28, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3798359 Block cipher system for data security Operating system authenticator Hierarchical security mechanism for dynamically assigning security levels to object programs Computer software security system Microprocessor for executing enciphered programs Protection of data processing system against unauthorized programs Cryptographic file security for single domain networks Method and apparatus for controlling usage of a programmable computing machine Crypto microprocessor for executing enciphered programs InventorsApplicationNo. 441221 filed on 11/28/1989US Classes:705/54Adding plural layers of rights or limitations by other than the original producerExaminersPrimary: Tarcza, Thomas H.Assistant: Cain, David Attorney, Agent or FirmForeign Patent References
International ClassH04L 009/00AbstractA software asset protection mechanism segregates the right to execute software from the software itself. The rights to execute, when installed on a composite computing system, are stored in a coprocessor element of the composite computing system. The software asset protection mechanism is enhanced as described herein by providing for the manipulation of those rights to execute. More particularly, the rights to execute can be conditioned at least in terms of a valid period of execution at least in terms of a valid period of execution or a valid number of executions. The rights to execute can be safely transferred from one coprocessor to another, or can be returned to the software vendor. Finally, a method of backing up the rights to execute to provide the user with the rights to execute in case the coprocessor element of the composite computing system fails.Other References
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