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With the rapid deployment of Internet of Things (IoT) devices in applicationssuch as smarthomes, healthcare and industrial automation, security and privacyhas become a major concern. Recently, National Institute of Standards andTechnology (NIST) has initiated a lightweight cryptography (LWC) competition tostandardize new cryptographic algorithm(s) for providing security inresource-constrained environments. In this context, measuring the suitabilityof new algorithms with existing communication and authentication protocols isan important problem. This paper investigates the performance of three NISTlightweight authenticated ciphers in round 2 namely ACE, SPIX and WAGE in theWiFi and CoAP handshaking authentication protocols. We implement the WiFi andCoAP handshake protocols and the IEEE802.11a physical layer communicationprotocol in software defined radio (SDR) and embed these two handshakingprotocols into the IEEE802.11a OFDM communication protocol to measure theperformance of three ciphers. We present the construction of KDF and MIC usedin the handshaking authentication protocols and provide optimizedimplementations of ACE, SPIX and WAGE including KDF and MIC on three different(low-power) microcontrollers. The performance results of these three cipherswhen adopted in WiFi and CoAP protocols are presented. Our experimental resultsshow that the cryptographic functionalities are the bottleneck in thehandshaking and data protection protocols.

Implementation of three LWC Schemes in the WiFi 4-Way Handshake with Software Defined Radio