How to prove yourself: practical solutions to identification and signature problems
Proceedings on Advances in cryptology---CRYPTO '86
Random oracles are practical: a paradigm for designing efficient protocols
CCS '93 Proceedings of the 1st ACM conference on Computer and communications security
Non-Interactive and Information-Theoretic Secure Verifiable Secret Sharing
CRYPTO '91 Proceedings of the 11th 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
The Power of RSA Inversion Oracles and the Security of Chaum's RSA-Based Blind Signature Scheme
FC '01 Proceedings of the 5th International Conference on Financial Cryptography
The Decision Diffie-Hellman Problem
ANTS-III Proceedings of the Third International Symposium on Algorithmic Number Theory
Secret Handshakes from Pairing-Based Key Agreements
SP '03 Proceedings of the 2003 IEEE Symposium on Security and Privacy
k-anonymous secret handshakes with reusable credentials
Proceedings of the 11th ACM conference on Computer and communications security
Robust and Efficient Sharing of RSA Functions
Journal of Cryptology
RSA-Based Undeniable Signatures
Journal of Cryptology
Unlinkable Secret Handshakes and Key-Private Group Key Management Schemes
ACNS '07 Proceedings of the 5th international conference on Applied Cryptography and Network Security
Secret Handshake: Strong Anonymity Definition and Construction
ISPEC '09 Proceedings of the 5th International Conference on Information Security Practice and Experience
Private Mutual Authentication and Conditional Oblivious Transfer
CRYPTO '09 Proceedings of the 29th Annual International Cryptology Conference on Advances in Cryptology
Securing traceability of ciphertexts: towards a secure software key escrow system
EUROCRYPT'95 Proceedings of the 14th annual international conference on Theory and application of cryptographic techniques
Proving in zero-knowledge that a number is the product of two safe primes
EUROCRYPT'99 Proceedings of the 17th international conference on Theory and application of cryptographic techniques
Stronger security of authenticated key exchange
ProvSec'07 Proceedings of the 1st international conference on Provable security
Beyond secret handshakes: affiliation-hiding authenticated key exchange
CT-RSA'08 Proceedings of the 2008 The Cryptopgraphers' Track at the RSA conference on Topics in cryptology
WCC'05 Proceedings of the 2005 international conference on Coding and Cryptography
A flexible framework for secret handshakes
PET'06 Proceedings of the 6th international conference on Privacy Enhancing Technologies
Group secret handshakes or affiliation-hiding authenticated group key agreement
CT-RSA'07 Proceedings of the 7th Cryptographers' track at the RSA conference on Topics in Cryptology
Taming big brother ambitions: more privacy for secret handshakes
PETS'10 Proceedings of the 10th international conference on Privacy enhancing technologies
Practical affiliation-hiding authentication from improved polynomial interpolation
Proceedings of the 6th ACM Symposium on Information, Computer and Communications Security
Affiliation-hiding authentication with minimal bandwidth consumption
WISTP'11 Proceedings of the 5th IFIP WG 11.2 international conference on Information security theory and practice: security and privacy of mobile devices in wireless communication
Private discovery of common social contacts
ACNS'11 Proceedings of the 9th international conference on Applied cryptography and network security
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Privacy-preserving techniques are increasingly important in our highly computerized society where privacy is both precious and elusive. Affiliation-Hiding Authenticated Key Exchange (AH-AKE) protocols offer an appealing service: authenticated key agreement coupled with privacy of group memberships of protocol participants. This type of service is essential in privacy-conscious p2p systems, mobile ad hoc networks and social networking applications. Prior work has succeeded in constructing a number of secure and efficient AH-AKE protocols which all assume full trust in the Group Authority (GA) -- the entity that sets up the group as well as registers and (optionally) revokes members. In this paper, we argue that, for many anticipated application scenarios, the trusted GA model should be relaxed to allow for certain types of malicious behavior. We examine the consequences of malicious GAs and explore the design of stronger AH-AKE protocols that withstand GA attacks. Our results demonstrate that such protocols are both feasible and practical.