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Updatable and Universal Common Reference Strings with Applications to zk-SNARKs
zero-knowledge common reference strings subvertability
2018/3/23
By design, existing (pre-processing) zk-SNARKs embed a secret trapdoor in a relation-dependent common reference strings (CRS). The trapdoor is exploited by a (hypothetical) simulator to prove the sche...
Efficient Two-Move Blind Signatures in the Common Reference String Model
Two-Move Blind Signatures the Common Reference String Model
2010/11/10
Blind signatures provide a mechanism for achieving privacy and anonymity whereby a user gets the signer to sign a message of his choice without the signer learning the content of the message, nor link...
Password-Authenticated Constant-Round Group Key Establishment with a Common Reference String
group key establishment password-based authentication
2008/12/1
A provably secure password-authenticated protocol for group
key establishment in the common reference string (CRS) model is presented.
Our construction assumes the participating users to share a com...
Universally Composable Multi-Party Computation with an Unreliable Common Reference String
Universally Composable Multi-Party Computation Unreliable Common Reference String UC
2008/5/28
Universally composable (UC) multi-party computation has been studied in two settings.
When a majority of parties are honest, UC multi-party computation is possible without
any assumptions. Without a...