17 search results - page 3 / 4 » Identity-based universal designated multi-verifiers signatur... |
IJNSEC
2007
13 years 5 months ago
2007
In 2004, Libert and Quisquater proposed an identity based undeniable signature scheme using pairings over elliptic curves. In this article, we show that the scheme is not secure. ...
INDOCRYPT
2003
Springer
13 years 10 months ago
2003
Springer
At Eurocrypt’91, Chaum and van Heyst introduced the concept of group signature. In such a scheme, each group member is allowed to sign messages on behalf of a group anonymously. ...
ACNS
2005
Springer
13 years 10 months ago
2005
Springer
Strong security notions often introduce strong constraints on the construction of cryptographic schemes: semantic security implies probabilistic encryption, while the resistance to...
DIM
2005
ACM
13 years 7 months ago
2005
ACM
Mobile Location-Based Services (LBS) have raised privacy concerns amongst mobile phone users who may need to supply their identity and location information to untrustworthy third ...
PKC
2009
Springer
13 years 9 months ago
2009
Springer
Abstract. Zero-knowledge proofs with witness elimination are protocols that enable a prover to demonstrate knowledge of a witness to the verifier that accepts the interaction prov...