The OpenWrt Project is a Linux operating system targeting embedded devices. Instead of trying to create a single, static firmware, OpenWrt provides a fully writable filesystem with package management.
Wireless sensor networks will be widely deployed in the near future. While much research has focused on making these networks feasible and useful, security has received little attention.
What key challenges does SPINS address for sensor network security?The research identifies critical constraints such as limited processing power and energy of sensors, which traditional security algorithms cannot effectively address, particularly highlighting the impracticability of RSA for these devices.How does μTESLA enhance authenticated broadcast for sensor networks?μTESLA introduces delayed key disclosure using symmetric mechanisms, significantly reducing overhead from approximately 24 bytes to just a few bytes per packet, making authenticated broadcasts feasible for low-power nodes.What are the main features of the Sensor Network Encryption Protocol (SNEP)?SNEP offers data confidentiality, authentication, integrity, and freshness with low overhead, adding only 8 bytes per message while maintaining robust security through its use of MACs and counters.