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:
Oct. 11, 2011
Filed:
Jun. 10, 2008
Apparatus and method for counter-based communications in wireless sensor networks and other networks
Denis Foo Kune, Saint Paul, MN (US);
Joseph John Kimball, Columbia, MO (US);
Thomas L. Phinney, Glendale, AZ (US);
Denis Foo Kune, Saint Paul, MN (US);
Joseph John Kimball, Columbia, MO (US);
Thomas L. Phinney, Glendale, AZ (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A method includes wirelessly receiving a message at a receiving node. The method also includes extracting a partial counter value from the message, where the partial counter value represents a subset of bits from a complete counter value of a transmitting node. The method further includes decrypting and authenticating the message based on the partial counter value. Decrypting and authenticating the message could include examining a bitmap to identify a bit value associated with the partial counter value, decrypting and authenticating the message if the identified bit value has a first value, and discarding the message if the identified bit value has a second value. Decrypting and authenticating the message could also include identifying at least one complete counter value at the receiving node based on the partial counter value and attempting to decrypt and authenticate the message using the at least one complete counter value.