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Quantum key management

United States Patent

9,509,506
November 29, 2016
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
Innovations for quantum key management harness quantum communications to form a cryptography system within a public key infrastructure framework. In example implementations, the quantum key management innovations combine quantum key distribution and a quantum identification protocol with a Merkle signature scheme (using Winternitz one-time digital signatures or other one-time digital signatures, and Merkle hash trees) to constitute a cryptography system. More generally, the quantum key management innovations combine quantum key distribution and a quantum identification protocol with a hash-based signature scheme. This provides a secure way to identify, authenticate, verify, and exchange secret cryptographic keys. Features of the quantum key management innovations further include secure enrollment of users with a registration authority, as well as credential checking and revocation with a certificate authority, where the registration authority and/or certificate authority can be part of the same system as a trusted authority for quantum key distribution.
Hughes; Richard John (Los Alamos, NM), Thrasher; James Thomas (Baltimore, MD), Nordholt; Jane Elizabeth (Los Alamos, NM)
LOS ALAMOS NATIONAL SECURITY, LLC (Los Alamos, NM)
13/ 599,816
20130083926
August 30, 2012
ACKNOWLEDGMENT OF GOVERNMENT SUPPORT This invention was made with government support under Contract No. DE-AC52-06NA25396 awarded by the U.S. Department of Energy. The government has certain rights in the invention.