TYING A DIGITAL LICENSE TO A USER AND TYING THE USER TO MULTIPLE COMPUTING DEVICES IN A DIGITAL RIGHTS MANAGEMENT (DRM) SYSTEM

摘要

A FIRST TRUSTED COMPONENT (18) ON A FIRST COMPUTING DEVICE (14) PERFORMS CRYPTOGRAPHY, EVALUATION, AND ENFORCEMENT AND IS TIED THERETO, AND A FIRST USER-MACHINE CERTIFICATE (28) ASSOCIATED WITH THE FIRST COMPUTING DEVICE (14) IS TIED TO A USER. CORRESPONDINGLY, A SECOND TRUSTED COMPONENT ON A SECOND COMPUTING DEVICE PERFORMS CRYPTOGRAPHY, EVALUATION, AND ENFORCEMENT AND IS TIED THERETO, AND A SECOND USER-MACHINE CERTIFICATE ASSOCIATED WITH THE SECOND COMPUTING DEVICE IS ALSO TIED TO THE USER. THE FIRST TRUSTED COMPONENT (18) OBTAINS THE CONTENT FOR RENDERING ON THE FIRST COMPUTING DEVICE (14) BY WAY OF THE FIRST USER-MACHINE CERTIFICATE (28) AND THE LICENSE (16), AND THE SECOND TRUSTED COMPONENT OBTAINS THE CONTENT FOR RENDERING ON THE SECOND COMPUTING DEVICE BY WAY OF THE SECOND USER-MACHINE CERTIFICATE AND THE SAME LICENSE (16).