Adaptive transparent encryption

Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Security kernel or utility

Reexamination Certificate

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Details

C713S164000, C713S167000, C726S001000, C726S003000, C726S027000, C726S030000, C709S246000, C705S051000

Reexamination Certificate

active

07100047

ABSTRACT:
A technique for adaptive encryption of digital assets such as computer files. The system model monitors passage of files to uncontrollable removable storage media or through network connections and the like which may indicate possible abuse of access rights. In accordance with a preferred embodiment, an autonomous independent agent process running at a point of use, such a background process in a client operating system kernel, interrupts requests for access to resources. The agent process senses low level system events, filters, and aggregates them. A policy engine analyzes sequences of aggregate events to determine when to apply encryption.

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patent: 2003/0051026 (2003-03-01), Carter et al.
patent: 2003/0120935 (2003-06-01), Teal et al.
patent: 2003/0145235 (2003-07-01), Choo
patent: 2004/0054894 (2004-03-01), Lambert
Kirichenko, A., “F-Secure Kernel Mode Cryptographic Driver, FIPS 140-2 Validation Security Policy”, F-Secure, Corp., Dec. 2001, entire document, cs-www.ncsl.nist.gov/cryptval/140-1/140sp/140sp237.pdf.
Reid, Jason F., et al, ‘DRM, Trusted Computing and Operating System Architecture’, 2005, Information Security Research Centre, Queensland Univer. of Technology, entire document, ‘http://crpit.com/confpapers/CRPITV44Reid.pdf’.

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