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. 27, 2021
Filed:
Feb. 16, 2017
Blue Armor Technologies, Llc, Houston, TX (US);
John William Hayes, Reno, NV (US);
Douglas A. Laird, Los Gatos, CA (US);
Charles Andrew Gram, Reno, NV (US);
Blue Armor Technologies, LLC, Houston, TX (US);
Abstract
Methods and apparatus for a Secure Time Communication System () are disclosed. One embodiment of the invention provides secure and non-interactive communication of clock information over an unsecured communications channel. This communication provides perfect forward secrecy, while detecting and blocking message spoofing, message replay, denial of service and cryptographic performance attacks. This mechanism also bounds the effect of message delay manipulation. The mechanism consists of two components, a filtered time encryptor () and a filtered time decryptor (). The filtered time encryptor () produces a message in two parts; a time token followed by an encrypted message body. The time token is used as a filter to detect most attacks and to determine the message key.