25 citations · 50 across the 5 of their papers we have counts for
5 papers
SMACS: Smart Contract Access Control Service
Bowen Liu, Siwei Sun, Pawel Szalachowski
Although blockchain-based smart contracts promise a ``trustless'' way of enforcing agreements even with monetary consequences, they suffer from multiple security issues. Many of th…
Fail-safe Watchtowers and Short-lived Assertions for Payment Channels
Bowen Liu, Pawel Szalachowski, Siwei Sun
The recent development of payment channels and their extensions (e.g., state channels) provides a promising scalability solution for blockchains which allows untrusting parties to…
StrongChain: Transparent and Collaborative Proof-of-Work Consensus
Pawel Szalachowski, Daniel Reijsbergen, Ivan Homoliak +1
Bitcoin is the most successful cryptocurrency so far. This is mainly due to its novel consensus algorithm, which is based on proof-of-work combined with a cryptographically-protect…
Permissionless Blockchains and Secure Logging
Chunpeng Ge, Siwei Sun, Pawel Szalachowski
The blockchain technology enables mutually untrusting participants to reach consensus on the state of a distributed and decentralized ledger (called a blockchain) in a permissionle…
Further results on differentially 4-uniform permutations over $\F_{2^{2m}}$
Zhengbang Zha, Lei Hu, Siwei Sun +1
In this paper, we present several new constructions of differentially 4-uniform permutations over $\F_{2^{2m}}$ by modifying the values of the inverse function on some subsets of $…