Paper 2005/269
Security Weakness in a Three-Party Password-Based Key Exchange Protocol Using Weil Pairing
Junghyun Nam, Seungjoo Kim, and Dongho Won
Abstract
Recently, Wen, Lee, and Hwang proposed a three-party password-authenticated key exchange protocol making use of the Weil pairing. The protocol was claimed to be provably secure. But despite the claim of provable security, the protocol is in fact insecure in the presence of an active adversary. We demonstrate this by presenting an attack that completely compromises the authentication mechanism of the protocol. Consequently, the proof of security for the protocol is invalidated.
Metadata
- Available format(s)
-
PDF
PS
- Category
- Cryptographic protocols
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- Key exchange protocolpassword-based authenticationWeil pairing.
- Contact author(s)
- jhnam @ dosan skku ac kr
- History
- 2005-08-17: received
- Short URL
- https://ia.cr/2005/269
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2005/269,
author = {Junghyun Nam and Seungjoo Kim and Dongho Won},
title = {Security Weakness in a Three-Party Password-Based Key Exchange Protocol Using Weil Pairing},
howpublished = {Cryptology {ePrint} Archive, Paper 2005/269},
year = {2005},
url = {https://eprint.iacr.org/2005/269}
}
