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Security of embedded computing systems is becoming of paramount concern asthese devices become more ubiquitous, contain personal information and areincreasingly used for financial transactions. Security attacks targetingembedded systems illegally gain access to the information in these devices ordestroy information. The two most common types of attacks embedded systemsencounter are code-injection and power analysis attacks. In the past, a numberof countermeasures, both hardware- and software-based, were proposedindividually against these two types of attacks. However, no single systemexists to counter both of these two prominent attacks in a processor basedembedded system. Therefore, this paper, for the first time, proposes ahardware/software based countermeasure against both code-injection attacks andpower analysis based side-channel attacks in a dual core embedded system. Theproposed processor, named SecureD, has an area overhead of just 3.80% and anaverage runtime increase of 20.0% when compared to a standard dual processingsystem. The overhead were measured using a set of industry standard applicationbenchmarks, with two encryption and five other programs.

SecureD: A Secure Dual Core Embedded Processor