On the security of some password-based key agreement schemes

Qiang Tang; Chris J.  Mitchell

Paper 2005/156

On the security of some password-based key agreement schemes

Qiang Tang and Chris J. Mitchell

Abstract

In this paper we show that two potential security vulnerabilities exist in the strong password-only authenticated key exchange scheme due to Jablon. Two standardised schemes based on Jablon's scheme, namely the first password-based key agreement mechanism in ISO/IEC FCD 11770-4 and the scheme BPKAS-SPEKE in IEEE P1363.2 also suffer from one or both of these security vulnerabilities. We further show that other password-based key agreement mechanisms, including those in ISO/IEC FCD 11770-4 and IEEE P1363.2, also suffer from these two security vulnerabilities. Finally, we propose means to remove these security vulnerabilities.

Metadata

Available format(s): PDF
Category: Cryptographic protocols
Publication info: Published elsewhere. Unknown where it was published
Contact author(s): qiang tang @ rhul ac uk
History: 2005-05-29: received
Short URL: https://ia.cr/2005/156
License: CC BY

BibTeX

@misc{cryptoeprint:2005/156,
      author = {Qiang Tang and Chris J.  Mitchell},
      title = {On the security of some password-based key agreement schemes},
      howpublished = {Cryptology {ePrint} Archive, Paper 2005/156},
      year = {2005},
      url = {https://eprint.iacr.org/2005/156}
}