Patent ID: 6957193
Filing Date: 2005-10-18
Classification: G06F,G06Q,H04L,H04N,Y10S

Abstract:
1. In a trusted system having at least one repository for controlling use of digital works in accordance with usage rights associated with the digital works, a method comprising: receiving a request to use a digital work in accordance with usage rights associated with the digital work, the usage rights specifying a manner of use and an access specification indicating a security class; determining a security level of a repository controlling the requested use; if the security level of the repository corresponds to the security class of the access specification specified in the usage rights associated with the digital work, granting the request and permitting exercise of the manner of use specified in the usage rights associated with the digital work in accordance with the usage rights, wherein the security class specified by the access specification indicates a minimum security level of a repository that can exercise the manner of use specified in the usage rights, the access specification is expressed with a grammar, and the digital work is encrypted; decrypting the digital work prior to exercising the manner of use, wherein a digital certificate is used for identification of the repository, the physical integrity of the repository is secured, digital works are accessed only through a transmission transaction protocol, and sensors are disposed on said repository to record attempts at physical and electronic tampering with the repository; and preventing performance of transaction when tampering is detected and reporting the detected tampering to a designated device.