17 search results - page 2 / 4 » Efficient Group Signatures without Trapdoors |
EUROCRYPT
2006
Springer
13 years 8 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...
IACR
2011
12 years 4 months ago
2011
We put forward a generalization of lossy trapdoor functions (LTFs). Namely, all-but-many lossy trapdoor functions (ABM-LTFs) are LTFs that are parametrized with tags. Each tag can...
IJNSEC
2008
13 years 5 months ago
2008
To enhance the efficiency of threshold group signature schemes, Yu and Chen, recently, proposed an efficient threshold group signature scheme. By using elliptic curves, the propos...
EUROCRYPT
2003
Springer
13 years 10 months ago
2003
Springer
Abstract. Digital Signatures emerge naturally from Public-Key Encryption based on trapdoor permutations, and the “duality” of the two primitives was noted as early as Diffie-He...
ISW
2005
Springer
13 years 10 months ago
2005
Springer
In a group signature [19], any group member can sign on behalf of the group while remaining anonymous, but its identity can be traced in an future dispute investigation. Essentiall...