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:
Sep. 22, 2009
Filed:
Aug. 11, 2003
David Grawrock, Aloha, OR (US);
Kevin Jones, Portland, OR (US);
David Grawrock, Aloha, OR (US);
Kevin Jones, Portland, OR (US);
Symantec Corporation, Mountain View, CA (US);
Abstract
A machine system includes bubble protection for protecting the information of certain classes of files from unauthorized access by way of unauthorized classes of programs at unauthorized periods of time. The machine system additionally may have On-The-Fly (OTF) mechanisms for automatic decryption of confidential file data on a per-use basis and automatic later elimination of the decrypted data by scorching and/or re-encrypting is disclosed. The system can operate within a multi-threaded environment. The machine system additionally may have a digital signature mechanism for protecting file data from unauthorized tampering. The machine system additionally may have a volume-encryption mechanism for protecting plaintext versions of file data from exposure in events of power outages.