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PKC
2012
Springer
219views Cryptology» more  PKC 2012»
12 years 1 months ago
On the Security of Dynamic Group Signatures: Preventing Signature Hijacking
We identify a potential weakness in the standard security model for dynamic group signatures which appears to have been overlooked previously. More specifically, we highlight tha...
Yusuke Sakai, Jacob C. N. Schuldt, Keita Emura, Go...
ASIACRYPT
2010
Springer
13 years 9 months ago
A Group Signature Scheme from Lattice Assumptions
Group signature schemes allow users to sign messages on behalf of a group while (1) maintaining anonymity (within that group) with respect to an observer, yet (2) ensuring traceab...
S. Dov Gordon, Jonathan Katz, Vinod Vaikuntanathan
JCST
2007
98views more  JCST 2007»
13 years 11 months ago
Breaking and Repairing Trapdoor-Free Group Signature Schemes from Asiacrypt'2004
Group signature schemes allow a member of a group to sign messages anonymously on behalf of the group. In the case of later dispute, a designated group manager can revoke the anony...
Xinyi Huang, Willy Susilo, Yi Mu, Futai Zhang
ICISC
2003
108views Cryptology» more  ICISC 2003»
14 years 27 days ago
On the Security of a Group Signature Scheme with Forward Security
A group signature scheme allows a group member of a given group to sign messages on behalf of the group in an anonymous and unlinkable way. In case of a dispute, however, a design...
Guilin Wang
IIWAS
2004
14 years 27 days ago
An Efficient Group Signature Based on the Discrete Logarithm Problem
Group signature schemes permit a group member signing on messages anonymously and unlinkably on behalf of a group. The anonymity can be revoked when arguments occurred. This paper...
Fuw-Yi Yang, Jinn-ke Jan
ASIACRYPT
2003
Springer
14 years 3 months ago
Efficient Group Signatures without Trapdoors
Abstract. Group signature schemes are fundamental cryptographic tools that enable unlinkably anonymous authentication, in the same fashion that digital signatures provide the basis...
Giuseppe Ateniese, Breno de Medeiros
EUROCRYPT
2006
Springer
14 years 3 months ago
Compact Group Signatures Without Random Oracles
We present the first efficient group signature scheme that is provably secure without random oracles. We achieve this result by combining provably secure hierarchical signatures i...
Xavier Boyen, Brent Waters
ASIACRYPT
2006
Springer
14 years 3 months ago
Analysis of One Popular Group Signature Scheme
The group signature scheme [1], ACJT for short, is popular. In this paper we show that it is not secure. It does not satisfy exculpability. The group manager can sign on behalf of ...
Zhengjun Cao
ASIACRYPT
2004
Springer
14 years 3 months ago
Efficient and Provably Secure Trapdoor-Free Group Signature Schemes from Bilinear Pairings
Group signature schemes are cryptographic systems that provide revocable anonymity for signers. We propose a group signature scheme with constant-size public key and signature leng...
Lan Nguyen, Reihaneh Safavi-Naini
ACNS
2004
Springer
167views Cryptology» more  ACNS 2004»
14 years 3 months ago
A Fully-Functional Group Signature Scheme over Only Known-Order Group
The concept of group signature allows a group member to sign message anonymously on behalf of the group. In the event of a dispute, a designated entity can reveal the identity of a...
Atsuko Miyaji, Kozue Umeda