Cryptography – Key management – Having particular key generator
Patent
1994-06-29
1995-12-05
Barron, Jr., Gilberto
Cryptography
Key management
Having particular key generator
375364, 375367, H04L 912, H04L 7033
Patent
active
054736943
ABSTRACT:
A cascaded synchronized system includes a nonlinear transmitter, a nonlinear cascaded receiver, a phase-detector/controller coupled to the receiver, and a signal generator also coupled to the receiver. The transmitter is responsive to an externally generated transmitter forcing signal for producing and transmitting a chaotic communications signal containing phase information. The cascaded receiver is responsive to a receiver forcing signal and to the chaotic communications signal for producing a chaotic receiver output signal containing phase information. The phase-detector/controller is responsive to the chaotic communications signal and to the receiver output signal for producing a correction signal. The signal generator is responsive to the correction signal for producing the receiver forcing signal in phase with and having the same frequency as the transmitter forcing signal.
REFERENCES:
patent: 3439279 (1969-04-01), Guanella
patent: 3947634 (1976-03-01), Betts
patent: 4301537 (1981-11-01), Roos
patent: 4606041 (1986-08-01), Kevin
patent: 4790013 (1988-12-01), Kage
patent: 4799259 (1989-01-01), Ogrodski
patent: 4827514 (1989-05-01), Ziolko et al.
patent: 4893339 (1990-01-01), Brights et al.
patent: 5007087 (1991-04-01), Bernstein et al.
patent: 5048086 (1991-09-01), Bianco et al.
patent: 5245660 (1993-09-01), Pecora et al.
patent: 5379346 (1995-01-01), Pecora et al.
K, Murali et al., "Synchronizing Chaos in Driven Chua's Circuit", Internanal Journal of Bifurcation and Chaos, vol. 3, No. 4 (1993), pp. 1057-1066.
K. Murali et al., "Transmission of Signals by Synchronization in A Chaotic Van Der Pol-Duffing Oscillator", Sep. 1993, Physical Review E, vol. 48, No. 3 pp. R1624-R1626.
U. Tietze.Ch.Schenk, "Electronic Circuits Design and Applications", pp. 861-869, Springer-Verlag, Berlin (1991).
Jacek M. Kowalski et al., "Asymptotically Synchronous Chaotic Orbits in Systems of Excitable Elements", Physical Review A, vol. 42, No. 10, 15 Nov. 1990, pp. 6260-6263.
Herbert G. Winful et al., "Synchronized Chaos and Spatiotemporal Chaos in Arrays of Coupled Lasers", Physical Review Letters, vol. 65, No. 13, Sep. 24, 1990, pp. 1575-1578.
James P. Crutchfield, "Chaos", Scientific American, Dec. 1986, pp. 46-57.
Alan V. Oppenhein et al., "Signal Processing in the Context of Chaotic Signals", presented in 1992, IEEE International Conference on Acoustics, Speech and Signal Processing, pp. IV-117 thru-120.
Lj. Kocarev et al., "Experimental Demonstration of Secure Communications VIA Chaotic Synchronization", International Journal of Bifurcation and Chaos, vol. 2, No. 3 (1992), pp. 709-713.
U. Parlitz et al., "Transmission of Digital Signals by Chaotic Synchronization", International Journal of Bifurcation and Chaos, vol. 2, No. 4, (1992), pp. 973-977.
Kevin M. Cuomo et al., "Circuit Implementation of Synchronized Chaos with Applications to Communications", Physical Review Letters, vol. 71, No. 1, Jul. 5, 1993, pp. 65-68.
Alexander A. Chernikov et al., "Chaos: How Regular Can it Be?", Physics Today, Nov. 1988, pp. 27-35.
Alan Wolf et al., "Determining Lyapunov Exponents from a Time Series", Physica 16D, (1985) pp. 285-317.
Y. S. Tang et al., "Synchronization and Chaos", IEEE Transctions on Circuits and Systems, vol. CAS-30, No. 9, Sep. 1983, pp. 620-626.
Greg M. Bernstein et al., "Secure Random Number Generation using Chaotic Circuits", IEEE, (1989) pp. 0640-0644.
Thomas L. Carroll et al., "Synchronizing Chaotic Systems", Paper presented at the SPIE, 14-15 Jul. 1993, San Diego, Calif., vol. No. 2038, Chaos in Communictions (1993).
Earle R. Hunt et al., "Keeping Chaos at Bay", IEEE Spectrum Nov. 1993, pp. 32-36.
Louis M. Pecora, "Synchronization in Chaotic Systems", Physical Review Letters, vol. 64, No. 8, 19 Feb. 1990, pp. 821-824.
Louis M. Pecora et al., "Driving Systems with Chaotic Signals", Physical Review A, vol. 44, No. 4, 15 Aug. 1991, pp. 2374-2383.
William L. Ditto et al., "Mastering Chaos", Scientific American, Aug. 1993, pp. 78-84.
Robert Langreth, "Engineering Dogma Gives Way to Chaos", Science, vol. 252, 10 May 1991, pp. 776-778.
Lou Pecora et al., "Driving Nonlinear Systems with Chaotic Signals" Proceedings of the 1st Experimental Chaos Conference.
Lou Pecora et al., "Synchronized Chaotic Signals and Systems", Proceedings of ICASSP Conference, San Francisco, Calif., Mar. 9.
Thomas L. Carroll et al., "Communicating with Chaos", 1993 NRL Review, May 1993, pp. 75-82.
Thomas L. Carroll et al. "Synchronizing Chaotic Circuits", IEEE Transactions on Circuits and Systems, vol. 38, No. 4, Apr. 1991.
Thomas L. Carroll et al, "A Circuit For Studying the Synchronization of Chaotic Systems", International Journal of Bifurcation and Chaos, vol. 2, No. 3, (1992), pp. 659-666.
Thomas L. Carroll et al., "Cascading Synchronized Chaotic Systems", Physica D, (1993) pp. 126-140.
Joseph Neff, "Circuits That Get Chaos in Sync", Scientific American, Aug. 1993, pp. 120-122.
Carroll Thomas L.
Heagy James F.
Pecora Louis M.
Barron Jr. Gilberto
Kalish Daniel
McDonnell Thomas E.
The United States of America as represented by the Secretary of
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