18 search results - page 3 / 4 » Adaptive Zero-Knowledge Proofs and Adaptively Secure Oblivio... |
EUROCRYPT
2006
Springer
13 years 10 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...
JUCS
2008
13 years 6 months ago
2008
Abstract: Oblivious transfer is an important cryptographic protocol in various security applications. For example, in on-line transactions, a k-out-of-n oblivious transfer scheme a...
TCC
2009
Springer
14 years 7 months ago
2009
Springer
We present a compiler for transforming an oblivious transfer (OT) protocol secure against an adaptive semi-honest adversary into one that is secure against an adaptive malicious ad...
EUROCRYPT
1997
Springer
13 years 10 months ago
1997
Springer
Oblivious transfer (OT) is an important primitive in cryptography. In chosen one-out-of-two string OT, a sender offers two strings, one of which the other party, called the receive...
PKC
2009
Springer
14 years 7 months ago
2009
Springer
In this work, we consider the task of allowing a content provider to enforce complex access control policies on oblivious protocols conducted with anonymous users. As our primary ...