Simple untrusted network for quantum cryptography
First Claim
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1. A method for distributing quantum cryptographic keys among a plurality of user devices through a switch connected to the plurality of user devices, the method comprising:
- establishing a connection between two of the user devices by the switch;
establishing a Quantum Key Distribution session between the two user devices to facilitate sharing of secret key material between the two user devices; and
repeating the establishing a connection and the establishing a Quantum Key Distribution session for different pairs of the user devices.
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Abstract
A method and system for distributing quantum cryptographic keys among a group of user devices through a switch connected to the user devices are provided. A switch [1000] establishes a connection between two user devices [405a, 405b] according to a schedule. A Quantum Key Distribution (QKD) session is established between the two user devices [405a, 405b] to facilitate sharing of secret key material between the two user devices. Connections and QKD sessions may be established for different pairs of the user devices.
159 Citations
54 Claims
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1. A method for distributing quantum cryptographic keys among a plurality of user devices through a switch connected to the plurality of user devices, the method comprising:
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establishing a connection between two of the user devices by the switch; establishing a Quantum Key Distribution session between the two user devices to facilitate sharing of secret key material between the two user devices; and repeating the establishing a connection and the establishing a Quantum Key Distribution session for different pairs of the user devices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A system for distributing quantum cryptographic keys in an untrusted network, the system comprising:
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a switch; and a plurality of user devices, each of the user devices being configured to have a connection through the switch, wherein; the switch comprises; a connection establisher configured to establish a connection between pairs of the plurality of user devices according to a schedule;
one of the user devices comprises;a Quantum Key Distribution session manager configured to establish a Quantum Key Distribution session with another one of the user devices via the established connection; and a secret sharer configured to derive shared secret information with the another one of the user devices. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A switch configured to establish a connection between a plurality of pairs of quantum cryptographic user devices, the switch comprising:
a connection establisher configured to successively establish a connection between the pairs of the quantum cryptographic user devices according to a schedule. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41)
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42. A user device configured to communicate with a second user device via a Quantum Key Distribution switch configured to switch connections among a plurality of user devices, including the user device and the second user device, according to a schedule, the user device comprising:
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a QKD session manager configured to establish a QKD session with the second user device via the QKD switch; and a secret sharer configured to exchange secret information with the second user device over the QKD session passing through the QKD switch. - View Dependent Claims (43, 44, 45)
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46. A system for distributing quantum cryptographic keys in an untrusted network, the system comprising:
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means for establishing a connection between pairs of user devices according to a schedule; means for establishing a Quantum Key Distribution session between a pair of the user devices via the established connection; and means for agreeing upon shared secret information derived from the Quantum Key Distribution session.
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47. A computer-readable memory device having stored thereon instructions for at least one processor to perform a method, the method comprising:
successively establishing a connection between pairs of a plurality of quantum cryptographic user devices according to a schedule. - View Dependent Claims (48, 49, 50, 51)
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52. A computer-readable memory device having stored thereon instructions for at least one processor to perform a method, the method comprising:
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establishing a Quantum Key Distribution session between a first user device and a second user device via a Quantum Key Distribution switch, which is configured to switch connections among a plurality of user devices, including the first and the second user devices, according to a schedule; and agreeing on secret information derived from the Quantum Key Distribution session between the first user device and the second user device. - View Dependent Claims (53, 54)
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Specification