Cryptography – Key management
Reexamination Certificate
2005-06-16
2009-12-29
Simitoski, Michael J (Department: 2434)
Cryptography
Key management
C713S192000, C713S193000
Reexamination Certificate
active
07639819
ABSTRACT:
One embodiment of the present invention provides a system that facilitates using an external security device to secure data in a database without having to modify database applications. The system operates by receiving a request at the database to perform an encryption/decryption operation, wherein the encryption/decryption operation is performed with the assistance of the external security module in a manner that is transparent to database applications. In response to the request, the system passes a wrapped (encrypted) column key (a key used to encrypt data within the database) to an external security module, wherein the wrapped column key is a column key encrypted with a master key that exists only within the external security module. The system then unwraps (decrypts) the wrapped column key in the external security module to retrieve the column key. Next, the system returns the column key to the database. The system then performs an encryption/decryption operation on data in the database using the column key. Finally, the system erases the column key from memory in the database.
REFERENCES:
patent: 5144665 (1992-09-01), Takaragi et al.
patent: 6336900 (2002-01-01), Alleckson et al.
patent: 7028191 (2006-04-01), Michener et al.
patent: 7093137 (2006-08-01), Sato et al.
patent: 2002/0110244 (2002-08-01), Flanagan et al.
patent: 2003/0084306 (2003-05-01), Abburi et al.
patent: 2004/0255133 (2004-12-01), Lei et al.
patent: 2006/0053112 (2006-03-01), Chitkara et al.
“Encryption of Data at Rest”, Application Security Inc.'s White Paper, Sep. 2004.
Ho Min-Hank
Lei Chon
Wong Daniel Man-Hung
Youn Paul
Oracle International Corporation
Park Vaughan & Fleming LLP
Poltorak Peter
Simitoski Michael J
LandOfFree
Method and apparatus for using an external security device... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for using an external security device..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for using an external security device... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4147290