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Yuefei Zhu - One of the best experts on this subject based on the ideXlab platform.

  • Constant round password based authenticated key exchange protocol for dynamic groups
    Financial Cryptography, 2008
    Co-Authors: Yuefei Zhu
    Abstract:

    In this paper, we extend the work of Abdalla et al. to take into account the notion of dynamicity in the membership and present an improved compiler that transforms any provably secure password-based authenticated 2-party key exchange into a more attractive password-based authenticated group key exchange. The resulting protocol is a provably secure and efficient dynamic password-based authenticated group key exchange protocol in a Constant number of rounds. To the best of our knowledge, our proposal is the first solution to Design Constant-round password-based authenticated group key exchange protocols for dynamic groups. Furthermore, its security result does not assume the Random Oracle model or the ideal cipher model.

  • Financial Cryptography - Constant-Round Password-Based Authenticated Key Exchange Protocol for Dynamic Groups
    Financial Cryptography and Data Security, 1
    Co-Authors: Yuefei Zhu
    Abstract:

    In this paper, we extend the work of Abdalla et al. to take into account the notion of dynamicity in the membership and present an improved compiler that transforms any provably secure password-based authenticated 2-party key exchange into a more attractive password-based authenticated group key exchange. The resulting protocol is a provably secure and efficient dynamic password-based authenticated group key exchange protocol in a Constant number of rounds. To the best of our knowledge, our proposal is the first solution to Design Constant-round password-based authenticated group key exchange protocols for dynamic groups. Furthermore, its security result does not assume the Random Oracle model or the ideal cipher model.

H.p. Weber - One of the best experts on this subject based on the ideXlab platform.

Rudolf Weber - One of the best experts on this subject based on the ideXlab platform.

  • Self-adapting thermal lens to compensate for the thermally induced lens in solid state lasers
    Laser Resonators III, 2000
    Co-Authors: Thomas Graf, Rudolf Weber, Eduard Wyss, Heinz Weber
    Abstract:

    The thermally induced lens is a critical issue in high-power diode-pumped solid-state lasers. A self-adaptive scheme to balance the thermal lenses in laser resonators is presented. The requirements for the thermo-optical self-adaptive element and its influence on the resonator are discussed. With an appropriate compensating element and the correct resonator Design, Constant beam parameters are expected to be achieved over a pump range of several kilowatts.© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

  • Self-adjusting compensating thermal lens to balance the thermally induced lens in solid-state lasers
    IEEE Journal of Quantum Electronics, 2000
    Co-Authors: Rudolf Weber, Th. Graf, H.p. Weber
    Abstract:

    The thermal lens is a critical issue, particularly in high-power diode-pumped solid-state laser rods. A self-adjusting scheme for compensation of the thermally induced lens is presented. The requirements for such an element and its influence on the resonator are discussed. With an appropriate compensating element and a suitable resonator Design, Constant beam parameters are expected to be achieved over a pump range of several kilowatts.

Th. Graf - One of the best experts on this subject based on the ideXlab platform.

M.s. Cha - One of the best experts on this subject based on the ideXlab platform.

  • Time-censored ramp tests with stress bound for Weibull life distribution
    IEEE Transactions on Reliability, 1997
    Co-Authors: Sun Bai, Y.r. Chun, M.s. Cha
    Abstract:

    This paper considers ramp tests for Weibull life distribution when there are limitations on test stress and test time. The inverse power law and a cumulative exposure model are assumed. Maximum likelihood estimators of model parameters and their asymptotic covariance matrix are shown. The optimum ramp test plans are given which minimize the asymptotic variance of the ML estimator of a specified quantile of log(life) at Design Constant stress. The effects of the pre-estimates of Design parameters are studied.