Abstract
With the deepening of the research and development in the field of embedded devices, the paradigm of the Internet of things (IoT) is gaining momentum. Its technology’s widespread applications increasing the number of connected devices constantly. IoT is built on sensor networks, which are enabling a new variety of solutions for applications in several fields (health, industry, defense, agrifood and agro sectors, etc.). Wireless communications are indispensable for taking full advantage of sensor networks but implies new requirements in the security and privacy of communications. Security in wireless sensor networks (WSNs) is a major challenge for extending IoT applications, in particular those related to the smart-agro. Moreover, limitations on processing capabilities of sensor nodes, and power consumption have made the encryption techniques devised for conventional networks not feasible. In such scenario, symmetric-key ciphers are preferred for key management in WSN; key distribution is therefore an issue. In this work, we provide a concrete implementation of a novel scalable group distributed key management method and a protocol for securing communications in IoT systems used in the smart agro sector, based on elliptic curve cryptography, to ensure that information exchange between layers of the IoT framework is not affected by sensor faults or intentional attacks. In this sense, each sensor node executes an initial key agreement, which is done through every member’s public information in just two rounds and uses some authenticating information that avoids external intrusions. Further rekeying operations require just a single message and provide backward and forward security.
Highlights
Agriculture has gone from being a major asset in the world’s food to being a key to food and to sustainability and non-harmfulness, both to the environment and to people
We introduce an implementation of a novel, efficient, and secure protocol to enable the secrecy among the communicating nodes of a wireless sensor networks (WSNs) based in trusted Key Management sharing scheme to allow the fast rejection of messages or data injected in the network by not authorized sensor nodes
A point P in E, being the set points generated by P of prime order and big enough to ensure that the Elliptic Curve Discrete Logarithm Problem is hard to solve
Summary
Agriculture has gone from being a major asset in the world’s food to being a key to food and to sustainability and non-harmfulness, both to the environment and to people. It is key to ensure that sensor nodes are operating properly, and that they are not being attacked or supplanted Under these circumstances, the data gathered can drive the whole system to a failure, affecting the sustainability of the production. The data gathered can drive the whole system to a failure, affecting the sustainability of the production To this end, the proposed method secures the information exchange by means of a lightweight and efficient protocol implemented in each node. We introduce an implementation of a novel, efficient, and secure protocol to enable the secrecy among the communicating nodes of a WSN based in trusted Key Management sharing scheme to allow the fast rejection of messages or data injected in the network by not authorized sensor nodes. Our aim in this work is to provide an application of the protocol introduced in [13] for group key management in dynamic communicating groups that behaves very efficiently in the initial key agreement, with just two rounds, and that scales perfectly with just one message per rekeying operation
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