MGT: A multi-grained memory hash mechanism for embedded processor

Zhenglin Liu, Qingchun Zhu, Wenjie Huo, X. Zou, Lian Huai
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引用次数: 1

Abstract

Memory integrity verification has been widely used to protect off-chip memory from the tamper attacks. In this paper, we propose a new hash mechanism, multi-grained hash tree (MGT), to optimize the run-time performance of memory integrity verification. This new scheme adopts variable granularities to hash the nodes on different levels, and caches these nodes in a split hash cache. The experimental results indicate that our new multi-grained scheme has 10.8% performance speedup even with a small hash cache, and reduces 53.69% initialization latency on average.
MGT:嵌入式处理器的多粒度内存散列机制
存储器完整性验证已被广泛用于保护片外存储器免受篡改攻击。本文提出了一种新的哈希机制——多粒度哈希树(MGT)来优化内存完整性验证的运行时性能。该方案采用可变粒度对不同级别的节点进行散列,并将这些节点缓存在拆分散列缓存中。实验结果表明,即使使用较小的散列缓存,我们的多粒度方案也有10.8%的性能加速,平均减少53.69%的初始化延迟。
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