Software pay per use system
April 29, 2014. 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 ReferencesCryptographic decoder for computer programs Software distribution system Digital computer system for executing encrypted programs Software usage authorization system with key for decrypting/re-encrypting/re-transmitting moving target security codes from protected software License mangagement system and license storage key Software distribution system Secure system for activating personal computer software at remote locations Apparatus and method for licensing software on a network of computers Key management system File encryption method and file cryptographic system InventorsApplicationNo. 152769 filed on 11/15/1993US Classes:705/53, Including third party for collecting or distributing payment (e.g., clearinghouse)380/282By public key methodExaminersPrimary: Cangialosi, SalvatoreAttorney, Agent or FirmInternational ClassH04L 009/00AbstractA pay per use system for of the unauthorized use of computer software. An encryption program encodes original software to produce secured software. The encoding is accomplished by using cryptographic techniques. In order to use the software, a user must call a telephone number to receive the cryptographic keys necessary to decrypt the secured software. Thus, users must pay for each use of the secured software. The system allows software developers to freely distribute the secured software. Copies of the secured software may be freely made, because payment is based on each use of the software not on each copy of the software.Other References
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