SPINS: security protocols for sensor networks
Proceedings of the 7th annual international conference on Mobile computing and networking
A key-management scheme for distributed sensor networks
Proceedings of the 9th ACM conference on Computer and communications security
An Efficient Protocol for Authenticated Key Agreement
Designs, Codes and Cryptography
Guide to Elliptic Curve Cryptography
Guide to Elliptic Curve Cryptography
Denial-of-service resilience password-based group key agreement for wireless networks
Proceedings of the 3rd ACM workshop on QoS and security for wireless and mobile networks
CANS '08 Proceedings of the 7th International Conference on Cryptology and Network Security
A Schnorr-Like Lightweight Identity-Based Signature Scheme
AFRICACRYPT '09 Proceedings of the 2nd International Conference on Cryptology in Africa: Progress in Cryptology
Energy-Efficient Implementation of ECDH Key Exchange for Wireless Sensor Networks
WISTP '09 Proceedings of the 3rd IFIP WG 11.2 International Workshop on Information Security Theory and Practice. Smart Devices, Pervasive Systems, and Ubiquitous Networks
Evaluating the energy-efficiency of key exchange protocols in wirelesssensor networks
Proceedings of the 7th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
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Wireless sensor nodes generally face serious limitations in terms of computational power, energy supply, and network bandwidth. Therefore, the implementation of effective and secure techniques for setting up a shared secret key between sensor nodes is a challenging task. In this paper we analyze and compare the energy cost of two different protocols for authenticated key establishment. The first protocol employs a lightweight variant of the Kerberos key transport mechanism with 128-bit AES encryption. The second protocol is based on ECMQV, an authenticated version of the elliptic curve Diffie-Hellman key exchange, and uses a 256-bit prime field GF(p) as underlying algebraic structure. We evaluate the energy cost of both protocols on a Rockwell WINS node equipped with a 133 MHz Strong ARM processor and a 100 kbit/s radio module. The evaluation considers both the processor's energy consumption for calculating cryptographic primitives and the energy cost of radio communication for different transmit power levels. Our simulation results show that the ECMQV key exchange consumes up to twice as much energy as Kerberos-like key transport.