Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"Byzantine fault-tolerance"”.
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Practical Byzantine fault tolerance
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, February 2001.
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Combining abstraction with Byzantine fault-tolerance
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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Eventual fault recovery strategies for Byzantine failures
Byzantine faults in distributed systems can have very destructive consequences for services built on top of these systems but are not commonly tolerated in production systems due to the overhead and scalability limitations with existing approaches such as Byzantine fault tolerance. This work …
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Scaling asynchronous multi-party computation: A systems perspective
… an infrastructure which is end-to-end robust, fault-tolerant and scalable. Unfortunately, existing frameworks fail to satisfy all of these requirements. Hence, many MPC applications are not yet practical due to the lack of an MPC framework that meets these needs. This work presents a scalable …
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Permissioned blockchain in a supply chain problem
… this technology can offer through the Practical Byzantine Fault Tolerance consensus (PBFT) that guarantees the correctness of the information. Finally, using a two-sided markets model we provide a preliminary setup of a fee system that creates incentives to enter the platform: the blockchain …
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Trustworthy and Efficient Blockchain-based E-commerce Model
… consensus mechanism named Modified- Practical Byzantine Fault Tolerance (M-PBFT), derived from the Practical Byzantine Fault Tolerance (PBFT) protocol to minimize communication overhead and improve overall efficiency. The modifications primarily target the leader election process and the …
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The novel Proof of Efficiency (PoEf) Consensus Mechanism: improved efficiency and cybersecurity for Blockchain-based Supply Chain Management Systems.
… an improvement over the traditional Practical Byzantine Fault Tolerance (PBFT) system. PoEf integrates sharding and a reputation-level score to enhance scalability and security. This mechanism dynamically adjusts the reputation of nodes based on their performance, ensuring high throughput, low …
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Understanding the interaction between reliability and wireless broadcast
… for reliable com- munication between a fault-free source-destination pair and design Byzantine fault tolerance protocols based on the proposed algorithms. In view of the fact that wireless networks have become an integral part of communication networks, reliability concerns arise when …
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Liveness analysis, modeling, and simulation of blockchain consensus algorithms' ability to tolerate malicious miners
… is used to provide a liveness analysis of byzantine consensus algorithms for permissioned blockchains. We provide a Digital Ledger Technologies (DLTs) consensus algorithm classification to understand the miner-selection process. We compile the ``security ingredients'' that enable consensus …
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Scalable Byzantine State Machine Replication: Designs, Techniques, and Implementations
… infrastructures. The widely used Crash Fault Tolerance (CFT) fault model of consensus protocols is prone to malicious and adversarial behaviors as well as non-crash faults such as software bugs. The Byzantine fault-tolerance (BFT) model and its trust-based variant, the hybrid model, …
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Improving Performance of Byzantine State Machine Replication through Self-Adaptation
Byzantine Fault-Tolerant (BFT) State Machine Replication (SMR) provides strong resilience against faults and intrusions, making it a solid foundation for building dependable distributed systems. However, its practical adoption remains limited due to several challenges: high operational costs …
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Towards Fast and Adaptive Byzantine State Machine Replication for Planetary-Scale Systems
… for building resilient distributed systems. In Byzantine fault-tolerant (BFT) systems, no concrete assumptions are made about the behavior of faulty replicas. With the advancement of distributed ledger technologies (DLT), planetary-scale BFT SMR ist becoming practical and necessary as it can …
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Generalized Consensus for Practical Fault-Tolerance
Despite extensive research on Byzantine Fault Tolerant (BFT) systems, overheads associated with such solutions preclude widespread adoption. Past efforts such as the Cross Fault Tolerance (XFT) model address this problem by making a weaker assumption that a majority of processes are correct and …
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Foundations of Multiple-Time-Scale Stochastic Approximation for Fast and Resilient Distributed Optimization Algorithms
This dissertation establishes a theoretical framework for analyzing and designing fast and resilient distributed optimization algorithms for large-scale networks. The central focus is on understanding and leveraging two-time-scale dynamics, which may arise naturally from the underlying network …