A Practical Byzantine Fault Tolerance (PBFT) is a consensus algorithm deployed in consortium blockchain that connects group of related participants. This type suits the implementation Building Information Modeling (BIM) information exchange with few However, when much more participants are involved BIM exchange, PBFT algorithm, which inherently requires intensive communications among participat...

Byzantine fault-tolerant algorithms promise agreement on a correct value, even if subset of processes can deviate from the algorithm arbitrarily. While these provide strong guarantees in theory, practice, protocol bugs and implementation mistakes may still cause them to go wrong. This paper introduces ByzzFuzz, simple yet effective method for automatically finding errors implementations through...

This paper argues for a new approach to building Byzantine fault tolerant systems. We observe that although recently developed BFT state machine replication protocols are quite fast, they don’t actually tolerate Byzantine faults very well: a single faulty client or server is capable of rendering PBFT, Q/U, HQ, and Zyzzyva virtually unusable. In this paper, we (1) demonstrate that existing proto...

The surprising success of cryptocurrencies has led to a surge of interest in deploying large scale, highly robust, Byzantine fault tolerant (BFT) protocols for mission-critical applications, such as financial transactions. Although the conventional wisdom is to build atop a (weakly) synchronous protocol such as PBFT (or a variation thereof), such protocols rely critically on network timing assu...

The decentralized cryptocurrency Bitcoin has experienced great success but also encountered many challenges. One of the challenges has been the long confirmation time and low transaction throughput. Another challenge is the lack of incentives at certain steps of the protocol, raising concerns for transaction withholding, selfish mining, etc. To address these challenges, we propose Solidus, a de...

The use of blockchain technology is becoming more widespread. Governments have expanded their the from online polls to business management smaller local governments while private institutions increased services financial medical management. This paper presents modified pBFT consensus algorithm for a efficient data method in cases applying blockchains authorized nodes such as governmental agenci...

Smart contracts allow application developers to automate business processes through a decentralized computation architecture. Contemporary blockchain platforms such as Ethereum and Hyperledger Fabric offer support for smart consensus mechanisms Proof-of-Work (PoW) or other types of transaction validation ordering services. This article exploits in the Byzantine Fault Tolerant (BFT) platforms. I...

Supply chain management can significantly benefit from contemporary technologies. Among these technologies, blockchain is considered suitable for anti-counterfeiting and traceability applications due to its openness, decentralization, anonymity, other characteristics. This article introduces different types of blockchains standard algorithms used in technology discusses their advantages disadva...

Blockchain technology has brought significant advantages for security and trustworthiness, in particular Internet of Things (IoT) applications where there are multiple organisations that need to verify data ensure shared smart contracts. offers features by means consensus mechanisms; two key mechanisms are, Proof Work (PoW) Practical Byzantine Fault Tolerance (PBFT). While the PoW based mechani...