摘要
为完善Seal演算的自身性质及形式化证明移动代码的安全性,从上下文等价性角度研究了Seal演算的等式特性及其应用。首先定义了Seal演算的可观察性和上下文等价性,然后通过两个判断上下文等价性的定理给出了Seal演算上下文等价性的判定方法,最后依据上下文等价性证明了Seal演算的防火墙等式。结果表明,Seal演算上下文等价性可以正确地描述Seal演算的等式特性,并可判定Seal演算的安全特性。
In order to improve the theory of Sealcalculus the security of mobile code, the equivalence in Sealcalculus is developed. The contextual equivalence of Sealcalculus is given. Through two theorems a method for judging contextual equivalence of the Seal calculus is presented. Firewall Equation of Sealcalculus based on the contextual equivalence of the Seal calculus is proved. It is indicated that the contextual equivalence of Sealcalculus may describe accurately the equivalence in Sealcalculus and judge the security characteristic of Sealcalculus.
出处
《吉林大学学报（信息科学版）》
CAS
2003年第3期269-274,共6页
Journal of Jilin University（Information Science Edition）
