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:
Aug. 30, 2016
Filed:
Sep. 15, 2015
Applicant:
Bogart Associates, Vienna, VA (US);
Inventors:
Timothy Tutt, Vienna, VA (US);
John Richard Sherwood, Seattle, WA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); H04L 9/32 (2006.01); H04L 9/08 (2006.01); H04W 12/04 (2009.01); H04W 12/06 (2009.01);
U.S. Cl.
CPC ...
H04L 63/0428 (2013.01); H04L 9/0861 (2013.01); H04L 9/3271 (2013.01); H04L 63/068 (2013.01); H04L 63/168 (2013.01); H04W 12/04 (2013.01); H04W 12/06 (2013.01);
Abstract
The present invention provides an efficient secure end-to-end messaging system utilizing encrypted ephemeral messages. The method comprises the steps of using a combination of HTTPS for transport security, using symmetric key cryptography with rotating temporary keys for individual message security, and using elliptic curve cryptography for key derivation and message authentication. The key rotation scheme used provides forward secrecy even between messages and perfect forward secrecy between sessions.