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A Smart Contract Refereed Data Retrieval Protocol with a Provably Low Collateral Requirement
blockchain collateral decentralized ledger
2019/5/23
We present a protocol for a cryptoeconomic fair exchange of data previously owned by the purchaser for tokens that functions even when both parties are anonymous. This enables peer-to-peer data storag...
On the Efficiency of Privacy-Preserving Smart Contract Systems
privacy-preserving smart contracts zk-SNARKs UC-security
2019/5/14
Along with blockchain technology, smart contracts have found intense interest in lots of practical applications. A smart contract is a mechanism involving digital assets and some parties, where the pa...
Blockchain-based smart contract platforms like Ethereum have become quite popular as a way to remove trust and add transparency to distributed applications. While different types of important applicat...
Senopra: Reconciling Data Privacy and Utility via Attested Smart Contract Execution
KAC key management
2019/1/4
The abundance of smart devices and sensors has given rise to an unprecedented large-scale data collection. While this benefits various data-driven application domains, it raises numerous security and ...
Towards a Smart Contract-based, Decentralized, Public-Key Infrastructure
public key infrastracture accumulators
2018/11/15
Public-key infrastructures (PKIs) are an integral part of the security foundations of digital communications. Their widespread deployment has allowed the growth of important applications, such as, int...
A Smart Contract for Boardroom Voting with Maximum Voter Privacy
Boardroom Voting Maximum Voter Privacy
2017/2/20
We present the first implementation of a decentralised and self-tallying internet voting protocol with maximum voter privacy using the Blockchain. The Open Vote Network is suitable for boardroom elec-...
Step by Step Towards Creating a Safe Smart Contract: Lessons and Insights from a Cryptocurrency Lab
Cryptocurrency smart contracts cybersecurity education
2015/12/30
We document our experiences in teaching smart contract programming to undergraduate
students at the University of Maryland, the first pedagogical attempt of its kind. Since smart
contracts deal dire...