204 search results - page 36 / 41 » On Provably Secure Time-Stamping Schemes |
CIS
2005
Springer
14 years 1 months ago
2005
Springer
Restrictive blind signatures allow a recipient to receive a blind signature on a message not known to the signer but the choice of message is restricted and must conform to certain...
DRM
2003
Springer
14 years 1 months ago
2003
Springer
In PODC 2003, Park, Chong, Siegel and Ray [22] proposed an optimistic protocol for fair exchange, based on RSA signatures. We show that their protocol is totally breakable already...
ACISP
2005
Springer
14 years 1 months ago
2005
Springer
We present the first group signature scheme with provable security and signature size O(λ) bits where the group manager, the group members, and the Open Authority (OA) are all id...
CCS
2004
ACM
14 years 1 months ago
2004
ACM
We propose a type and effect system for authentication protocols built upon a tagging scheme that formalizes the intended semantics of ciphertexts. The main result is that the val...
IH
2001
Springer
14 years 7 days ago
2001
Springer
The goal of zero-knowledge watermark detection is to allow a prover to soundly convince a verifier of the presence of a watermark in certain stego-data without revealing any infor...