Blockchain has found applications to track ownership of digital assets. Yet, several
blockchains were shown vulnerable to network attacks. It is thus crucial for companies to …

As the size of data is increasing exponentially, its security is a major concern. Emerging
technology like blockchain is used to provide security to systems. Since the inception of …

To implement a blockchain, the trend is now to integrate a non-trivial Byzantine fault-tolerant
consensus algorithm instead of the seminal idea of waiting to receive blocks to decide upon …

Finding the right abstraction is critical for reasoning about complex systems such as
distributed protocols like Paxos and Raft. Despite a recent abundance of impressive …

Achieving consensus is a challenging and ubiquitous problem in distributed systems that is
only made harder by the introduction of malicious byzantine servers. While significant effort …

Byzantine Fault-Tolerant (BFT) protocols are known to be difficult to design and to reason
about. To address this challenge, on one hand, several approaches have been developed …

Blockchain has recently attracted the attention of the industry due, in part, to its ability to
automate asset transfers. It requires distributed participants to reach a consensus on a block …

Abstract LibraBFT is a Byzantine Fault Tolerant (BFT) consensus protocol based on HotStuff.
We present an abstract model of the protocol underlying HotStuff/LibraBFT, and formal …

Byzantine fault-tolerant state machine replication (SMR) protocols, such as PBFT, HotStuff,
and Jolteon, are essential for modern blockchain technologies. However, they are …

This paper presents a specification framework for monadic, recursive, interactive programs
that supports auto-active verification, an approach that combines user-provided guidance …