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Analysis and improvement of an authenticated key exchange protocol for sensor networks

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3 Author(s)
Xiaojian Tian ; Dept. of Comput. Sci., City Univ. of Hong Kong, China ; Wong, Duncan S. ; Zhu, R.W.

In 2003, Huang et al. proposed: an authenticated key exchange protocol for secure communications between a sensor and a security manager in a self-organizing sensor network. The protocol is, based on elliptic curve cryptography. In this letter, we show that a security manager will learn the long-term private key of a sensor after having one normal run of-the protocol with the sensor. This contradicts to some of their security claims. We explain why this is undesirable in practice and also-propose an improvement which solves the problem and makes all of their security claims hold again.

Published in:

Communications Letters, IEEE  (Volume:9 ,  Issue: 11 )

Date of Publication:

Nov. 2005

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