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:
Jul. 03, 2018
Filed:
May. 11, 2016
ID Quantique SA, Carouge, CH;
Simon Johnson, Chêne-Bougeries, CH;
Grégoire Ribordy, Troinex, CH;
id Quantique SA, Carouge, CH;
Abstract
A method for providing eavesdropping detection of an optic fiber communication between two users includes the steps of exchanging both data and probe signals through at least two channels () between the users, exchanging probe signals () on one channel (or) between quantum probe signal terminals, extracting a key for authentication from the probe signals, and exchanging data signals () between transmission units on another channel (or). A first portion of the key generated by the quantum probe signal terminals is used to authenticate the terminals, wherein a second portion of the key is dedicated to define commutation occurrences of commutation devices adapted to commutate the use of the channels () for data () and probe () signals, thus detecting an eavesdropping event () which triggers an alarm (). A further portion of the key can be used to encrypt the messages.