Reducing network overhead of IoTDTLS protocol employing ChaCha20 and Poly1305

IP based communication protocols will play a key role enabling the pervasive connectivity among the devices within IoT network. Such a resource-restricted platform specific protocol is Datagram Transport Layer Security (DTLS) protocol. Applicability of DTLS to constrained environments is still a controversial issue because of its network overhead, memory management, and latency. This work presents a security scheme with two-way verification for wireless sensor nodes employing established standards with rather insignificant data transfer and handshaking latency. The recommended security scheme is built with a new cipher suite incorporated with an authentication algorithm “Poly1305” and an encryption algorithm “ChaCha20”.