Patent ID: 7036011
Filing Date: 2006-04-25
Classification: G06F,G06Q,H04L

Abstract:
1. A method of digital rights management (DRM), comprising the steps of: receiving content at a client computer, wherein the content is encrypted with an encryption key; the client computer requesting the encryption key from a server using a digital certificate, wherein the digital certificate includes a public key of a public key infrastructure (PKI) key pair, the server is remote from the client computer and a first hardware profile of the client computer is stored and linked with a copy of the digital certificate on the server, and the requesting step includes transmitting a second hardware profile of the client computer to the server; the server receiving the request; determining if the digital certificate is valid, wherein the determining step determines whether the second hardware profile is the same as the first hardware profile; encrypting the second hardware profile of the client computer with a random session key; and encrypting the random session key with the public key of the PKI key pair.