PKC
2012
Springer
12 years 1 months ago
2012
Springer
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...
ASIACRYPT
2010
Springer
13 years 8 months ago
2010
Springer
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...
JCST
2007
13 years 10 months ago
2007
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...
ICISC
2003
14 years 5 days ago
2003
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...
IIWAS
2004
14 years 5 days ago
2004
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...
ASIACRYPT
2003
Springer
14 years 2 months ago
2003
Springer
Abstract. Group signature schemes are fundamental cryptographic tools that enable unlinkably anonymous authentication, in the same fashion that digital signatures provide the basis...
EUROCRYPT
2006
Springer
14 years 2 months ago
2006
Springer
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...
ASIACRYPT
2006
Springer
14 years 2 months ago
2006
Springer
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 ...
ASIACRYPT
2004
Springer
14 years 2 months ago
2004
Springer
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...
ACNS
2004
Springer
14 years 2 months ago
2004
Springer
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...