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Sensors 2018, 18(1), 251; https://doi.org/10.3390/s18010251

Unified Compact ECC-AES Co-Processor with Group-Key Support for IoT Devices in Wireless Sensor Networks

1
Dpto. Electrónica y Tecnología de Computadores, Universidad de Granada, 18071 Granada, Spain
2
Dpto. Matemáticas, Universidad de Almería, 04120 Almería , Spain
3
Dpto. Informática, Universidad de Almería, 04120 Almería, Spain
Current address: Facultad de Ciencias, Universidad de Granada, 18071 Granada, Spain.
*
Author to whom correspondence should be addressed.
Received: 12 December 2017 / Revised: 4 January 2018 / Accepted: 12 January 2018 / Published: 16 January 2018
(This article belongs to the Special Issue Security, Trust and Privacy for Sensor Networks)
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Abstract

Security is a critical challenge for the effective expansion of all new emerging applications in the Internet of Things paradigm. Therefore, it is necessary to define and implement different mechanisms for guaranteeing security and privacy of data interchanged within the multiple wireless sensor networks being part of the Internet of Things. However, in this context, low power and low area are required, limiting the resources available for security and thus hindering the implementation of adequate security protocols. Group keys can save resources and communications bandwidth, but should be combined with public key cryptography to be really secure. In this paper, a compact and unified co-processor for enabling Elliptic Curve Cryptography along to Advanced Encryption Standard with low area requirements and Group-Key support is presented. The designed co-processor allows securing wireless sensor networks with independence of the communications protocols used. With an area occupancy of only 2101 LUTs over Spartan 6 devices from Xilinx, it requires 15% less area while achieving near 490% better performance when compared to cryptoprocessors with similar features in the literature. View Full-Text
Keywords: elliptic curve cryptography; AES; IoT; WSN; cryptographic processor; FPGA elliptic curve cryptography; AES; IoT; WSN; cryptographic processor; FPGA
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Parrilla, L.; Castillo, E.; López-Ramos, J.A.; Álvarez-Bermejo, J.A.; García, A.; Morales, D.P. Unified Compact ECC-AES Co-Processor with Group-Key Support for IoT Devices in Wireless Sensor Networks. Sensors 2018, 18, 251.

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