Encryption system with transaction coded decryption key

摘要: The encryption secured computer system (10) includes a server (12) that communicates with clients (14-20) across public network (21) using novel transaction coded decryption key technology discourages wrongful redistribution of protected information such as digital musical scores, and allows for tracking infringing activity. In one implementation, the distributes access software partially encrypted scores to upon request. A client can sample prior consummating transaction. When score is selected, enters payment assigned password specific functions enable use by employing software. Any subsequent together be traced due identifying encoded into password.