Welcome to the resource topic for 2009/515
Title:
Blake-Wilson, Johnson and Menezes Protocol Revisited
Authors: Hai Huang, Zhenfu Cao
Abstract:In this paper, we investigate the famous Blake-Wilson, Johnson & Menezes (BJM) authenticated key exchange protocols. We observe that the Corrupt query in the BJM model is not very reasonable, i.e. it fails to model the adversary’s capability well. We modify the BJM model by providing it with a new Corrupt query. By this way, we bring the BJM model further to the practice. Besides, our modification has a significant impact on the security proofs of the BJM protocols. Specifically, the security proofs using CDH assumption will no longer work in the modified BJM model.With slight modification, we show that the BJM protocols are secure in the modified BJM model under the gap Diffie-Hellman assumption (GDH).
ePrint: https://eprint.iacr.org/2009/515
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