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:
Feb. 10, 2009
Filed:
Nov. 13, 2000
Applicants:
Thomas Valfridsson, Skellefte{dot over (a)}, SE;
Ulf Mattsson, UM Cos Cob, CT (US);
Inventors:
Thomas Valfridsson, Skellefte{dot over (a)}, SE;
Ulf Mattsson, UM Cos Cob, CT (US);
Assignee:
Protegrity Corporation, Stamford, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for encryption of the content in a database, the method including the steps of detecting that a predetermined time period has elapsed, generating an unexpired encryption key, associating the unexpired encryption key with expiration information, scanning the database for an encrypted item, the encrypted item corresponding to a plaintext item, the encrypted item having been encrypted using an expired encryption key, and encrypting the plaintext item, using the unexpired encryption key, into a reencrypted item.