Methods and systems for tamper resistant files

Details Methods and systems for tamper resistant files Methods and systems for tamper resistant files

2011-06-14

2011-06-14

Zand, Kambiz (Department: 2434)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

By stored data protection

C380S030000, C713S194000

Reexamination Certificate

active

07962765

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.

REFERENCES:
patent: 2005/0198517 (2005-09-01), Ivanov et al.
patent: 2006/0021064 (2006-01-01), England et al.
patent: 2006/0098824 (2006-05-01), Mao
patent: 2007/0016801 (2007-01-01), Bade et al.
patent: 2007/0232316 (2007-10-01), Reda et al.

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