Worst-case execution time analysis of security policies for deeply embedded real-time systems
Worst-case execution time analysis of security policies for deeply embedded real-time systems
复制标题
深度嵌入式实时系统安全策略的最坏情况执行时间分析
DOI：
10.1145/1366283.1366291
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Sibin Mohan
中科院分区：
文献类型：
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作者：
Sibin Mohan
深度嵌入式系统由于其体积小以及在关键基础设施中所起的重要作用，往往具有独特的限制条件。问题包括代码大小受限、对实际硬件的访问受限等等。在实时系统中，这些问题变得更加关键，因为安全策略不仅必须在上述限制条件下发挥作用，还必须确保不延误任务期限。实时系统中安全策略的一个关键信息是安全代码的最坏情况执行时间（WCET）。本文探讨了在实施此类安全策略时面临的一些问题，以及确定其最坏情况执行时间的过程。
Deeply embedded systems often have unique constraints because of their small size and vital roles in critical infrastructure. Problems include limitations on code size, limited access to the actual hardware, etc. These problems become more critical in real-time systems where security policies must not only work within the above limitations but also ensure that task deadlines are not missed. A critical piece of information for security policies in real-time systems is the worst-case execution time (WCET) of the security code. This paper addresses some of the issues faced in the implementation of such security policies and also the process of determining WCETs for them.