Security weakness in ren et al.'s group key agreement scheme built on secure two-party protocols

Authors:
Junghyun Nam;Seungjoo Kim;Dongho Won
Affiliations:
School of Information and Communication Engineering, Sungkyunkwan University, Republic of Korea;School of Information and Communication Engineering, Sungkyunkwan University, Republic of Korea;School of Information and Communication Engineering, Sungkyunkwan University, Republic of Korea
Venue:
WISA'05 Proceedings of the 6th international conference on Information Security Applications
Year:
2005

Citing 13
Cited 0

Entity authentication and key distribution

CRYPTO '93 Proceedings of the 13th annual international cryptology conference on Advances in cryptology
Communication complexity of group key distribution

CCS '98 Proceedings of the 5th ACM conference on Computer and communications security
Key Agreement in Dynamic Peer Groups

IEEE Transactions on Parallel and Distributed Systems
Provably authenticated group Diffie-Hellman key exchange

CCS '01 Proceedings of the 8th ACM conference on Computer and Communications Security
Nonmalleable Cryptography

SIAM Journal on Computing
Analysis of Key-Exchange Protocols and Their Use for Building Secure Channels

EUROCRYPT '01 Proceedings of the International Conference on the Theory and Application of Cryptographic Techniques: Advances in Cryptology
Authenticated Multi-Party Key Agreement

ASIACRYPT '96 Proceedings of the International Conference on the Theory and Applications of Cryptology and Information Security: Advances in Cryptology
Round-Optimal Contributory Conference Key Agreement

PKC '03 Proceedings of the 6th International Workshop on Theory and Practice in Public Key Cryptography: Public Key Cryptography
A Security Analysis of the Cliques Protocols Suites

CSFW '01 Proceedings of the 14th IEEE workshop on Computer Security Foundations
Tree-based group key agreement

ACM Transactions on Information and System Security (TISSEC)
Attack on an ID-based authenticated group key agreement scheme from PKC 2004

Information Processing Letters
Efficient authenticated key agreement protocol for dynamic groups

WISA'04 Proceedings of the 5th international conference on Information Security Applications
New multiparty authentication services and key agreement protocols

IEEE Journal on Selected Areas in Communications

Quantified Score

Hi-index	0.00

Visualization

Abstract

A group key agreement protocol is designed to allow a group of parties communicating over an insecure, public network to agree on a common secret key. Recently, in WISA'04, Ren et al. proposed an efficient group key agreement scheme for dynamic groups, which can be built on any of secure two-party key establishment protocols. In the present work we study the main EGAKA-KE protocol of the scheme and point out a critical security flaw in the protocol. We show that the security flaw leads to a vulnerability to an active attack mounted by two colluding adversaries.