Patent ID: 8964989
Filing Date: 2015-02-24
Classification: H04L

Abstract:
1. A method for generating a key among first and second designated clients in a multi-party quantum key distribution system comprising: providing a quantum channel including a plurality of nodes including: transmitting a quantum signal over the quantum channel from the originating node to the terminating node, the quantum signal including a plurality of photons representative of a plurality of bits; performing an operation on the quantum signal at each of the intermediate nodes; revealing via a public communication path, a) complete information regarding the transmission of the plurality of photons at the originating node, b) complete information regarding the measurement of the plurality of photons at the terminating node, c) complete information regarding the operation performed at the plurality of intermediates nodes except N determining, at the first and second designated clients, a cryptographic key shared between the first and second designated clients based on the revealed information.