Entity authentication and key distribution
CRYPTO '93 Proceedings of the 13th annual international cryptology conference on Advances in cryptology
STOC '98 Proceedings of the thirtieth annual ACM symposium on Theory of computing
Provably authenticated group Diffie-Hellman key exchange
CCS '01 Proceedings of the 8th ACM conference on Computer and Communications Security
New Key Agreement Protocols in Braid Group Cryptography
CT-RSA 2001 Proceedings of the 2001 Conference on Topics in Cryptology: The Cryptographer's Track at RSA
New Public-Key Cryptosystem Using Braid Groups
CRYPTO '00 Proceedings of the 20th Annual International Cryptology Conference on Advances in Cryptology
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
A Practical Attack on Some Braid Group Based Cryptographic Primitives
PKC '03 Proceedings of the 6th International Workshop on Theory and Practice in Public Key Cryptography: Public Key Cryptography
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
Modeling insider attacks on group key-exchange protocols
Proceedings of the 12th ACM conference on Computer and communications security
Authenticated key exchange secure against dictionary attacks
EUROCRYPT'00 Proceedings of the 19th international conference on Theory and application of cryptographic techniques
Protocols for Authentication and Key Establishment
Protocols for Authentication and Key Establishment
Thompson's group and public key cryptography
ACNS'05 Proceedings of the Third international conference on Applied Cryptography and Network Security
Efficient key encapsulation to multiple parties
SCN'04 Proceedings of the 4th international conference on Security in Communication Networks
A new cramer-shoup like methodology for group based provably secure encryption schemes
TCC'05 Proceedings of the Second international conference on Theory of Cryptography
A framework for robust group key agreement
ICCSA'06 Proceedings of the 2006 international conference on Computational Science and Its Applications - Volume Part III
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Known proposals for key establishment schemes based on combinatorial group theory are often formulated in a rather informal manner. Typically, issues like the choice of a session identifier and parallel protocol executions are not addressed, and no security proof in an established model is provided. Successful attacks against proposed parameter sets for braid groups further decreased the attractivity of combinatorial group theory as a candidate platform for cryptography. We present a 2-round group key agreement protocol that can be proven secure in the random oracle model if a certain group-theoretical problem is hard. The security proof builds on a framework of Bresson et al., and explicitly addresses some issues concerning malicious insiders and also forward secrecy. While being designed as a tool for basing group key agreement on non-abelian groups, our framework also yields a 2-round group key agreement basing on a Computational Diffie-Hellman assumption.