| 摘要: |
| 在移动资源演算(MR)中发现了一种干扰现象,称为直接访问干扰,该现象比移动灰箱演算(MA)中的墙干扰现象更具破坏力,因为在MR中恶意的环境或上下文可以不受限制地访问进程内部的敏感资源.因而该干扰问题当被视为一种程序运行错误.为了控制直接干扰现象,提出了一种MR的变体:安全移动资源演算(SR).它使用了一种类型系统来避免所有的直接访问干扰的发生.基于该研究,MA中的强干扰现象实际上是直接访问干扰的一种特殊形式,自然地,在SR中也得到了相应的控制.最后给出一些用例,说明如何使用新设计的演算系统,以及它的健壮性. |
| 关键词: 并发 移动计算 进程演算 类型系统 移动计算 |
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| 基金项目:Supported by the National Natural Science Foundation of China under Grant No60173033 (国家自然科学基金) |
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| Typing Mobile Resources |
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FU Cheng,YOU Jin-Yuan
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| Abstract: |
| A kind of interference, called direct access interference, is found in the calculus of Mobile Resources(MR), which will cause more damage than the grave interference one finds in the calculus of Mobile Ambients,because in MR malicious environments or contexts can freely access the sensitive resources inside a process. This kind of interference should be regarded as a program error. To control the direct access interference, we devise a variant of MR, the calculus of Safe Mobile Resources (SR). The authors use a type system to avoid the occurrence of all direct access interferences. Due to the study, the grave interference is a special form of the direct access interference, which is also controlled in SR. At the end of the paper, several examples are provided to illustrate how to use the new calculus and how robust it is. |
| Key words: concurrency mobile computing process calculi type system mobile resources |
