The thesis is focused on the access control model for workflow systems and the security analysis of workflow systems by formal methods.
本文研究了工作流系统的访问控制模型及其安全性分析的方法。
Formal methods for protocol analysis ware put forward based on changing the security problem into a mathematical problem, which we can rigorously prove it instead of judging by intuition.
安全协议形式化分析技术的提出，将协议的安全性问题转化为数学问题，采用数学证明的手段来代替直觉的判定，近年来已逐步被公认为解决安全问题的合理方案。
Formal methods for protocol analysis ware put forward based on changing the security problem into a mathematical problem, which we can rigorously prove it instead of judging by intuition.
安全协议形式化分析技术的提出，将协议的安全性问题转化为数学问题，采用数学证明的手段来代替直觉的判定，近年来已逐步被公认为解决安全问题的合理方案。
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