Encryption system with transaction coded decryption key

H - Electricity – 04 – L

Patent

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Details

H04L 9/32 (2006.01) G06F 1/00 (2006.01) G06F 21/00 (2006.01) G06Q 20/00 (2006.01) G07F 7/00 (2006.01) G07F 7/10 (2006.01) G07F 17/16 (2006.01) G10H 1/00 (2006.01) H04L 9/14 (2006.01) H04L 29/06 (2006.01) H04L 29/08 (2006.01)

Patent

CA 2220457

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

L'invention est un système informatique protégé par chiffrement (10) comportant un serveur (12) qui communique avec ses clients (14-20) par le truchement d'un réseau public (21) en utilisant pour les transactions une nouvelle technologie de déchiffrement qui gêne la redistribution non autorisée d'informations protégées telles que les compositions musicales, et permet de retracer les violations. Dans l'une des concrétisations de l'invention, le serveur (12) distribue sur demande aux clients un logiciel d'accès et des compositions musicales partiellement chiffrées. Le client peut examiner les compositions partiellement chiffrées avant une transaction. Quand il a sélectionné une composition, le client introduit une information de paiement et se voit attribuer un mot de passe particulier pour lui-même et sa transaction. Ce mot de passe sert de clé de déchiffrement qui permet au client en question d'utiliser la composition musicale en se servant du logiciel d'accès. Toute redistribution non autorisée ultérieure de cette composition musicale et de ce mot de passe peut être retracée grâce à l'information d'identification du client qui est codée dans le mot de passe.

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