![Loading...](https://link.springer.com/static/c4a417b97a76cc2980e3c25e2271af3129e08bbe/images/pdf-preview/spacer.gif)
-
Chapter and Conference Paper
Anonymous Sidechains
Sidechains allow two or more blockchains to communicate with each other by transferring coins (or other ledger assets) from one to the other. Their functionalities set sidechains as one of the most prominent s...
-
Chapter and Conference Paper
Asymmetric Message Franking: Content Moderation for Metadata-Private End-to-End Encryption
Content moderation is crucial for stop** abusive and harassing messages in online platforms. Existing moderation mechanisms, such as message franking, require platform providers to be able to associate user ...
-
Chapter and Conference Paper
ZLiTE: Lightweight Clients for Shielded Zcash Transactions Using Trusted Execution
Cryptocurrencies record transactions between parties in a blockchain maintained by a peer-to-peer network. In most cryptocurrencies, transactions explicitly identify the previous transaction providing the fund...
-
Chapter and Conference Paper
Updatable and Universal Common Reference Strings with Applications to zk-SNARKs
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 scheme is zer...
-
Chapter and Conference Paper
Decentralized Anonymous Micropayments
Micropayments (payments worth a few pennies) have numerous potential applications. A challenge in achieving them is that payment networks charge fees that are high compared to “micro” sums of money.
-
Chapter and Conference Paper
Accountable Privacy for Decentralized Anonymous Payments
Decentralized ledger-based currencies such as Bitcoin provide a means to construct payment systems without requiring a trusted bank. Removing this trust assumption comes at the significant cost of transaction ...
-
Chapter and Conference Paper
Rational Zero: Economic Security for Zerocoin with Everlasting Anonymity
Zerocoin proposed adding decentralized cryptographically anonymous e-cash to Bitcoin. Given the increasing popularity of Bitcoin and its reliance on a distributed pseudononymous public ledger, this anonymity i...
-
Article
Charm: a framework for rapidly prototy** cryptosystems
We describe Charm, an extensible framework for rapidly prototy** cryptographic systems. Charm provides a number of features that explicitly support the development of new protocols, including support for mod...