07380120 is referenced by 127 patents and cites 342 patents.

In a system for providing access control management to electronic data, techniques to secure the electronic data and keep the electronic data secured at all times are disclosed. According to one embodiment, a secured file or secured document includes two parts: an attachment, referred to as a header, and an encrypted document or data portion. The header includes security information that points to or includes the access rules and a file key. The access rules facilitate restrictive access to the secured document and essentially determine who/when/how/where the secured document can be accessed. The file key is used to encrypt/decrypt the encrypted data portion. Only those who have the proper access privileges are permitted to retrieve the file key to encrypt/decrypt the encrypted data portion.

Title
Secured data format for access control
Application Number
10/74804
Publication Number
7380120 (B1)
Application Date
February 12, 2002
Publication Date
May 27, 2008
Inventor
Denis Jacques Paul Garcia
Palo Alto
CA, US
Agent
Sterne Kessler Goldstein & Fox P L L C
Assignee
Guardian Data Storage
DE, US
IPC
H04N 7/167
H04L 9/32
G06F 11/30
G06F 12/14
G06F 7/04
G06F 17/30
G06K 9/00
H04L 9/00
View Original Source