Cryptanalysis of an Identity-Based Multiple Key Agreement Scheme

Qingfeng Cheng

Paper 2012/410

Cryptanalysis of an Identity-Based Multiple Key Agreement Scheme

Qingfeng Cheng

Abstract

Multiple key agreement (MKA) protocols allow two parties to generate two or more session keys in one session, which will be used for future secure communications in public network. In recent years, many MKA protocols have been proposed. However, most of them do not consider ephemeral key compromise resilience, and some of them still exists security flaws. In this paper, we analyze the scheme proposed by Dehkordi and Alimoradi in 2011, which is announced with stronger security. We will present ephemeral key compromise attack and impersonation attack against Dehkordi and Alimoradi’s protocol. For overcoming these security flaws, we also propose an improvement of Dehkordi and Alimoradi’s protocol.

Metadata

Available format(s): PDF
Category: Cryptographic protocols
Publication info: Published elsewhere. Unknown where it was published
Keywords: multiple key agreement bilinear pairing mutual authentication ephemeral key compromise attack impersonation attack
Contact author(s): qingfengc2008 @ sina com
History: 2012-07-25: received
Short URL: https://ia.cr/2012/410
License: CC BY

BibTeX

@misc{cryptoeprint:2012/410,
      author = {Qingfeng Cheng},
      title = {Cryptanalysis of an Identity-Based Multiple Key Agreement Scheme},
      howpublished = {Cryptology {ePrint} Archive, Paper 2012/410},
      year = {2012},
      url = {https://eprint.iacr.org/2012/410}
}