Patent ID: 7076661

Claim:
A system for denying access to second pre-encrypted content generated by a compromised off-line encryption device, the system comprising: the off-line encryption device having a processor for executing one or more software instructions for encrypting content to form a first pre-encrypted content and an associated first encryption record having a first time stamp; and an encryption renewal system having a processor for executing one or more software instructions for receiving a signal indicating the first time stamp as a last authorized time stamp, one or more software instructions for receiving a request to access the second pre-encrypted content, the request being accompanied by a second encryption record having a second time stamp, and one or more software instructions for determining whether the second time stamp predates or is contemporaneous to the first time stamp, if yes, granting the request to access the second pre-encrypted content, and if the second time stamp is subsequent to the first time stamp, denying the request to access the second pre-encrypted content.