FDTLS: Supporting DTLS-Based Combined Storage and Communication Security for IoT Devices

摘要

This work presents FDTLS, a security framework that combines storage and network/communication-level security on resource limited Internet of Things (IoT) devices using Datagram Transport Layer Security (DTLS). While coalescing the storage and networking security schemes can reduce redundant and unnecessary cryptographic operations, we identify security-and system-level challenges that can occur when applying DTLS towards such concept. FDTLS addresses these challenges by employing an asymmetric key generation scheme, a virtual peer-based handshaking mechanism, and a header size reduction scheme. Our results obtained using Contiki-based implementations on OpenMote devices show that compared to using storage and networking security separately, FDTLS can reduce the network response latency and improve energy savings.