A quick safari through the reconfiguration jungle
Proceedings of the 38th annual Design Automation Conference
Analyzing the energy consumption of security protocols
Proceedings of the 2003 international symposium on Low power electronics and design
Analyzing and modeling encryption overhead for sensor network nodes
WSNA '03 Proceedings of the 2nd ACM international conference on Wireless sensor networks and applications
Security in embedded systems: Design challenges
ACM Transactions on Embedded Computing Systems (TECS)
TinyPK: securing sensor networks with public key technology
Proceedings of the 2nd ACM workshop on Security of ad hoc and sensor networks
TinySec: a link layer security architecture for wireless sensor networks
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
A dynamic operating system for sensor nodes
Proceedings of the 3rd international conference on Mobile systems, applications, and services
Avrora: scalable sensor network simulation with precise timing
IPSN '05 Proceedings of the 4th international symposium on Information processing in sensor networks
A Unified Optimal Voltage Selection Methodology for Low-Power Systems
ISQED '07 Proceedings of the 8th International Symposium on Quality Electronic Design
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Wireless embedded systems, especially life-critical body-area networks, need security in order to prevent unauthorized and malicious users from injecting traffic and accessing confidential data. Coupled with the security costs in system performance and power consumption, embedded systems are also restricted by the type of security that can fit in their limited memory. To address these issues, we introduce a Dynamic Security System (DYNASEC), a novel architecture that ensures message integrity and confidentiality in wireless embedded systems. A delay-aware heuristic attempts to maximize security levels of different nodes throughout the system while ensuring that timing constraints are met. This experimental analysis on a reconfigurable electrocardiogram (ECG) application validates the efficacy of the DYNASEC architecture in a body area network. Our experiments demonstrate that DYNASEC enables lightweight medical embedded systems to dynamically optimize security levels to meet timing constraints in a body sensor network.