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:
Apr. 23, 2013
Filed:
Apr. 12, 2010
Applicant:
Stephen Waller Melvin, San Francisco, CA (US);
Inventor:
Stephen Waller Melvin, San Francisco, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 11/30 (2006.01); G06F 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus are utilized to manage keys associated with encrypted stored information. Sensitive information is stored in an encrypted form, and by creating and deleting the keys needed to decrypt information according to a time-based policy, the convenient expiration of stored data can be realized. By periodically erasing old keys and creating new keys, information that has not been written recently becomes virtually deleted. A refresh policy can be utilized to cause information that is read to be re-encrypted using a newer key, thereby extending the time before it will become inaccessible.