94 search results - page 15 / 19 » Proxy Re-signature Schemes Without Random Oracles |
CCS
2001
ACM
14 years 1 months ago
2001
ACM
A group signature scheme allows a group member to sign messages anonymously on behalf of the group, while in case of a dispute, a designated entity can reveal the identity of a si...
ASIACRYPT
2006
Springer
14 years 9 days ago
2006
Springer
Non-interactive zero-knowledge proofs play an essential role in many cryptographic protocols. We suggest several NIZK proof systems based on prime order groups with a bilinear map...
EUROCRYPT
2008
Springer
13 years 10 months ago
2008
Springer
Standard security notions for encryption schemes do not guarantee any security if the encrypted messages depend on the secret key. Yet it is exactly the stronger notion of security...
CRYPTO
2010
Springer
13 years 9 months ago
2010
Springer
We present a technique for delegating a short lattice basis that has the advantage of keeping the lattice dimension unchanged upon delegation. Building on this result, we construct...
ICCSA
2007
Springer
14 years 2 months ago
2007
Springer
An encrypted email is sent from Bob to Alice. A gateway wants to check whether a certain keyword exists in an email or not for some reason (e.g. routing). Nevertheless Alice does n...