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- W1904191545 abstract "Embedded system designers face a unique set of challenges in making their systems more secure, as these systems often have stringent resource constraints or must operate in harsh or physically insecure environments. One of the security issues that have recently drawn attention is software integrity, which ensures that the programs in the system have not been changed either by an accident or an attack. In this paper we propose an efficient hardware mechanism for runtime verification of software integrity using encrypted instruction block signatures. We introduce several variations of the basic mechanism, and give details of three techniques that are most suitable for embedded systems. Performance evaluation using selected MiBench, Mediabench, and Basicrypt benchmarks indicates that the considered techniques impose a relatively small performance overhead. The best overall technique has performance overhead in the range 0-8%, when protecting 128-byte instruction blocks with 16-byte signatures. With 64-byte instruction blocks, the overhead is in the range 0-15%; the average overhead with 8~KB cache is 1%. With additional investment in a signature cache, this overhead can be almost completely eliminated." @default.
- W1904191545 created "2016-06-24" @default.
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- W1904191545 date "2006-01-01" @default.
- W1904191545 modified "2023-09-26" @default.
- W1904191545 title "An efficient runtime instruction block verification for secure embedded systems" @default.
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