17 search results - page 1 / 4 » Efficient Group Signatures without Trapdoors |
ASIACRYPT
2003
Springer
13 years 8 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...
ASIACRYPT
2004
Springer
13 years 8 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...
ISW
2004
Springer
13 years 10 months ago
2004
Springer
Abstract. Chameleon signatures are based on well established hashand-sign paradigm, where a chameleon hash function is used to compute the cryptographic message digest. Chameleon s...
IIWAS
2004
13 years 6 months 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...
ISW
2010
Springer
13 years 2 months ago
2010
Springer
A Private Information Retrieval (PIR) protocol allows a database user, or client, to obtain information from a data- base in a manner that prevents the database from knowing which...