基于Biba和Clark-Wilson策略的混合强制完整性模型
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Supported by the National High-Tech Research and Development Plan of China under Grant No.2007AA010601 (国家高技术研究发展计划(863)); the Defense Pre-Research Project of the “Eleventh Five-Year-Plan” of China (国家“十一五”国防预研项目)


Hybrid Mandatory Integrity Model Composed of Biba and Clark-Wilson Policy
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    摘要:

    商业应用需要实施完整性策略保护.Biba模型提供了一种简洁的多级完整性控制方案,但是需要引入可信主体来保证实施的可用性.而Clark-Wilson模型通过可监控的状态转换提供了一种完备的完整性保护,但其复杂性影响了该模型的完整实现.提出的模型以Biba严格完整性策略为基础,同时根据可信主体在其生命周期所属的状态实施Biba低水标策略.对可信主体在其生命周期发生的状态转换及相应的低水标参数调整,采用Clark-Wilson模型来进行监控.在有效解决了Biba策略的可用性问题和Clark-Wilson模型监控量过大给系统带来的配置和运行负担问题的同时,继承它们的优点.证明了该策略融合方案是可行的、安全的.

    Abstract:

    Commercial application requires protection of integrity policy. Biba model provides a simple multi-level integrity access control scheme but it needs the introduction of trusted subject to ensure the usability. Clark-Wilson model provides a complete integrity protection by means of controlled state transaction, but its entire implementation is hindered by its complication. This paper proposes a model that enforces Biba strict integrity policy as basic access control mechanism, at the same time enforces Biba low-water-mark policy on trusted subjects according to the state in their lifecycle. Clark-Wilson model is used to control and audit subject’s state transition and run time adjustment of low-water-mark policy parameters. This paper solves the usability problem introduced by Biba policies and high configuration burden and runtime overload introduced by massive supervising task of Clark-Wilson, while at the same time borrows their merits. This policy composition scheme is proved to be applicable and secure.

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周洲仪,贺也平,梁洪亮.基于Biba和Clark-Wilson策略的混合强制完整性模型.软件学报,2010,21(1):98-106

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  • 收稿日期:2007-12-16
  • 最后修改日期:2008-10-27
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