Cryptography – Communication system using cryptography – Fiber optic network
Reexamination Certificate
2002-07-17
2008-11-25
Brown, Christopher J (Department: 2134)
Cryptography
Communication system using cryptography
Fiber optic network
C380S278000, C713S171000
Reexamination Certificate
active
07457416
ABSTRACT:
Methods and systems are provided for distributing key information by securely transmitting light information in a network along a path comprised of a plurality of network devices and by using a key distribution center (KDC) connected with the network. Three or more user devices connected with the network are specified as constituting a secure communication group. Each user device sets up an end-to-end path to the KDC by configuring at least one of the network devices to direct light information along the path. Thereafter, a user key is established between each user device and the KDC, by sending light information using randomly selected quantum bases through the path. The KDC determines a shared secret key, and notifies each user device of the shared secret key by sending the result of a calculation based on the shared secret key and each user key through the network.
REFERENCES:
patent: 4445116 (1984-04-01), Grow
patent: 4649233 (1987-03-01), Bass et al.
patent: 4770535 (1988-09-01), Kim et al.
patent: 5058973 (1991-10-01), Refregier et al.
patent: 5243649 (1993-09-01), Franson
patent: 5307410 (1994-04-01), Bennett
patent: 5311572 (1994-05-01), Friedes et al.
patent: 5339182 (1994-08-01), Kimble et al.
patent: 5400325 (1995-03-01), Chatwani et al.
patent: 5414771 (1995-05-01), Fawcett, Jr.
patent: 5469432 (1995-11-01), Gat
patent: 5502766 (1996-03-01), Boebert et al.
patent: 5515438 (1996-05-01), Bennett et al.
patent: 5535195 (1996-07-01), Lee
patent: 5602916 (1997-02-01), Grube et al.
patent: 5675648 (1997-10-01), Townsend
patent: 5710773 (1998-01-01), Shiga
patent: 5729608 (1998-03-01), Janson et al.
patent: 5732139 (1998-03-01), Lo et al.
patent: 5757912 (1998-05-01), Blow
patent: 5764765 (1998-06-01), Phoenix et al.
patent: 5764767 (1998-06-01), Beimel et al.
patent: 5768378 (1998-06-01), Townsend et al.
patent: 5768391 (1998-06-01), Ichikawa
patent: 5805801 (1998-09-01), Holloway et al.
patent: 5850441 (1998-12-01), Townsend et al.
patent: 5911018 (1999-06-01), Bischel et al.
patent: 5953421 (1999-09-01), Townsend
patent: 5960131 (1999-09-01), Fouquet et al.
patent: 5960133 (1999-09-01), Tomlinson
patent: 5966224 (1999-10-01), Hughes et al.
patent: 6005993 (1999-12-01), MacDonald
patent: 6028935 (2000-02-01), Rarity et al.
patent: 6052465 (2000-04-01), Gotoh et al.
patent: 6097696 (2000-08-01), Doverspike
patent: 6122252 (2000-09-01), Aimoto et al.
patent: 6130780 (2000-10-01), Jaonnopoulos et al.
patent: 6145024 (2000-11-01), Maezawa et al.
patent: 6154586 (2000-11-01), MacDonald et al.
patent: 6160651 (2000-12-01), Chang et al.
patent: 6188768 (2001-02-01), Bethune et al.
patent: 6233075 (2001-05-01), Chang et al.
patent: 6233393 (2001-05-01), Yanagihara et al.
patent: 6272548 (2001-08-01), Cotter et al.
patent: 6289104 (2001-09-01), Patterson et al.
patent: 6341127 (2002-01-01), Katsube et al.
patent: 6378072 (2002-04-01), Collins et al.
patent: 6430345 (2002-08-01), Dultz et al.
patent: 6463060 (2002-10-01), Sato et al.
patent: 6507012 (2003-01-01), Medard et al.
patent: 6519062 (2003-02-01), Yoo
patent: 6529498 (2003-03-01), Cheng
patent: 6532543 (2003-03-01), Smith et al.
patent: 6538990 (2003-03-01), Prorock
patent: 6539410 (2003-03-01), Klass
patent: 6560707 (2003-05-01), Curtis et al.
patent: 6563796 (2003-05-01), Saito
patent: 6594055 (2003-07-01), Snawerdt
patent: 6605822 (2003-08-01), Blais et al.
patent: 6646727 (2003-11-01), Saleh et al.
patent: 6647010 (2003-11-01), Ford et al.
patent: 6650805 (2003-11-01), Chen et al.
patent: 6654346 (2003-11-01), Mahalingaiah et al.
patent: 6678379 (2004-01-01), Mayers et al.
patent: 6684335 (2004-01-01), Epstein et al.
patent: 6728281 (2004-04-01), Santori et al.
patent: 6748434 (2004-06-01), Kavanagh
patent: 6754214 (2004-06-01), Mahalingaiah
patent: 6778557 (2004-08-01), Yuki et al.
patent: 6799270 (2004-09-01), Bull et al.
patent: 6801626 (2004-10-01), Nambu
patent: 6836463 (2004-12-01), Garcia-Luna-Aceves et al.
patent: 6862564 (2005-03-01), Shue et al.
patent: 6882431 (2005-04-01), Teich et al.
patent: 6895092 (2005-05-01), Tomita
patent: 6897434 (2005-05-01), Kumar et al.
patent: 6986056 (2006-01-01), Dultz et al.
patent: 7035411 (2006-04-01), Azuma et al.
patent: 2002/0015573 (2002-02-01), Ishibashi
patent: 2002/0021467 (2002-02-01), Oefk et al.
patent: 2002/0025041 (2002-02-01), Tomita
patent: 2002/0097874 (2002-07-01), Foden et al.
patent: 2002/0141019 (2002-10-01), Chang et al.
patent: 2003/0002674 (2003-01-01), Nambu et al.
patent: 2003/0059157 (2003-03-01), DeCusatis et al.
patent: 2003/0231771 (2003-12-01), Gisin et al.
patent: 2004/0005056 (2004-01-01), Nishioka et al.
patent: 2004/0008843 (2004-01-01), Van Enk
patent: 2004/0019676 (2004-01-01), Iwatsuki et al.
patent: 2004/0109564 (2004-06-01), Cerf et al.
patent: 2004/0136321 (2004-07-01), Ren et al.
patent: 2004/0165884 (2004-08-01), Al-Chalabi
patent: 2004/0190725 (2004-09-01), Yuan et al.
patent: 2005/0094818 (2005-05-01), Inoue et al.
DeBashis Basak, Daniel O. Awduche, John Drake and Yakov Redhter, Multi-protocol Lambda Switching: Issues in Combining MLPS Traffic Engineering Control with Optical Cross-connects, IEFT Internet Draft Memo, http://www.ieft.org/shadowhtml, Feb. 2000, pp. 1-9.
Daniel O. Awduche, Yakov Rekhter, John Drake and Rob Coutun, Mullti-protocol Lambda Switching: Combining MPLS Traffic Engineering Control with Optical Crossconnects, IETF Internet Draft Memo, http://www.ietf.org/shadow.html, Jan. 2001, pp. 21.
Charles H. Bennett and Gilles Brassard, Quantum Cryptography: Public Key Distribution and Coin Tossing, Intl. Conf. On Computers, Systems & Signal Processing, Bangalore, India, Dec. 10-12, 1984, 5 pages.
Donald S. Bethune and Williams P. Risk, Prototype Autocompensated Quantum Cryptography System Based on Polarization Splitting of Light, Session QC41, DCOMP/CCP99: Quantum Computing and Cryptography, MAr. 24, 1999 (4 pages).
D.S. Bethune and W.P. Risk, An Autocompensating Fiber-Optic Quantum Crytopgraphy System Based on Polarization Splitting of Light, IEEE Journal of Quantum Electronics, vol. XX, No. Y, 1999.
Graham P. Collins, Quantum Cryptography Defies Eavesdropping, Physics Today, Nov. 1992, p. 21-23.
L.Y. Lin, E.L. goldstein and R.W. Tkach, Free-Space Micromachined Optical Switches for Optical Networking, IEEE Journal of Selected Topics in Quantum Electronics, vol. 5, No. 1, Jan./Feb. 1999.
S. Eisenberg and R. Boger, Lucent Technologies names Cherry Murray Physical Science Research Vice President, http://www.lucent.com/press/0300/00328.bla.html, Mar. 28, 2000 (2 pages).
Simon J.D. Phoenix, Stephen M. Barnett, Paul D. Townsend and K.J. Blow, Multi-user Quantum Cryptography on Optical Networks, Journal of Modern Optical Letter, vol. 42, No. 6, 1995, pp. 1155-1163.
Laser End-Point Detection System, IBM Technical Disclosure Bulletin, vol. 28, No. 7, Dec. 1985, pp. 3151-3163.
E. Rosen, A. Viswanathan and R. Callon, Multiprotocol Label Switching Architecture, Internet Standards Track Protocol, Internet Official Protocol Standards (STD 1), Jan. 2001, pp. 1-61.
P.D. Townsend, J.G. Rarity and P.R. Tapster, Enhanced Single Photon Fringe Visibility in a 10 km-Long Prototype Quantum Cryptography Channel, Electronics Letters, vol. 29, No. 14, Jul. 8, 1993, pp. 1291-1293.
P.D. Townsend, Secure Key Distribution System Based on quantum Cryptography, Electronics Letters, vol. 30, No. 10, May 12, 1994, pp. 809-811.
P.D. Townsend, J.G. Rarity and P.R. Tapster, Single Photon Interference in 10km Long Optical Fiber Interferometer, Electronics Letters, vol. 29, No. 7, Apr. 1, 1993, p. 6334-635.
James A. Walker, Telecommunications Applications of MEMs, mstnews, Mar. 2000, p. 6-9.
Violations of a New Inequality for Classical Fields; Fransom, J.D.; Johns Hopkins University; NTIS-NASA Publication; Goddard Space Flight Center; Workshop on Squeezed States and Uncertainty Relations, Feb. 1991, pp. 23-32.
“Quantum key distribution: Real-time compensation of interferometer phase drift,” NTNU Department of Physical Electronics, pp. 1-45.
Bennett, C.H., et al., “Experimental Quantum Cryptography,” Journal of Crytopgraphy
BBN Technologies Corp.
Brown Christopher J
Ropes & Gray LLP
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