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    ASIA unversity > 資訊學院 > 資訊工程學系 > 期刊論文 >  Item 310904400/18602


    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/18602


    Title: A Cryptographic Key Assignment Scheme with Adaptable Time-token Constraint in a Hierarchy , vol.3, no.4, pp. 1–16, October 2008.
    Authors: 陳興忠;Chen, Hsing-Chung
    Contributors: 資訊工程學系
    Keywords: key assignment;proactive key management;access control;adaptable time-token
    Date: 2008-10
    Issue Date: 2012-11-26 13:55:49 (UTC+8)
    Abstract: A scheme, which uses flexible cryptographic key management upon adaptable time-token
    constraint for a user hierarchy access control (UHAC) scheme, is proposed in this paper. For
    adapting the changeability in a UHAC system, we propose a technique of assigning
    independent time-token which is distributed by a trusted agency server to reply an authorized
    user for once secure access request. The key feature of the technique is to adapt some secure
    parameters in distributed time-token for responding to each legal access request. Further, all
    class keys will be updated proactively by the concept of proactive key management, which
    makes the advantage that is proven and free from the scenario of the collusive attack example
    which proposed by Yi et al. in [18]. This cryptographic key assignment scheme based on the
    difficulty in solving a discrete logarithm, with adaptable time-token constraint, can achieve
    better security and more efficient management, than the conventional UHAC scheme.
    Besides, our scheme provides a flexible manner and dynamic key management to increase the
    availability of user access in UHAC structure
    Relation: International Journal of Multimedia and Ubiquitous Engineering
    Appears in Collections:[資訊工程學系] 期刊論文

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