The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 2011
Filed:
Jun. 14, 2007
David H. Malcolm, Somerville, MA (US);
David H. Malcolm, Somerville, MA (US);
Red Hat, Inc., Raleigh, NC (US);
Abstract
Embodiments of the present invention provide a tamper proof file system. In particular, the present invention utilizes a virtual block device that is coupled with a real block device and a private/public key pair. The virtual block device receives the original data and then digitally signs it with the private key. The virtual block device then passes the digitally signed data to the real block device for storage. In order to retrieve or verify the data, the virtual block device may provide the public key and an acknowledgment. The acknowledgment may include a hash of the public key. The virtual block device is configured to discard the private key and to be removed from the system based on a finite lifespan.