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:
Mar. 25, 2014
Filed:
Dec. 02, 2009
Simon Robert Wiseman, Malvern, GB;
Richard Middleton Hicks, Malvern, GB;
Brian Sinclair Lowans, Malvern, GB;
Simon Robert Wiseman, Malvern, GB;
Richard Middleton Hicks, Malvern, GB;
Brian Sinclair Lowans, Malvern, GB;
Qinetiq Limited, London, GB;
Abstract
A method of establishing a quantum key for use between a first network node (QNode) and a second network node (QNode) in a network for carrying out quantum cryptography includes a key agreement step carried out by a third node (QNode) and the second node (QNode) and a subsequent authentication step carried out by the first and second nodes directly. As the key agreement step does not involve QNode, another key agreement step may be simultaneously performed by another pair of network nodes QNode, QNodeto agree a quantum key for use by network nodes QNodeand QNode. The invention allows respective quantum keys to be established between a network node and each of a set of other nodes more rapidly than is the case if each quantum key is established serially by key agreement and authentication steps.