Recent progress on BFT in the era of blockchains
1Institute for Advanced Study, BNRist, and National Financial Cryptography Research Center, Tsinghua University, China.
National Science Review
|October 5, 2022
Summary
This perspective reviews recent advancements in Byzantine fault tolerant (BFT) consensus protocols for blockchains. It covers both partially synchronous and asynchronous BFT, detailing their core components and variations.
Area of Science:
- Computer Science
- Distributed Systems
- Blockchain Technology
Background:
- Blockchains rely on consensus protocols for secure and decentralized operation.
- Byzantine faults, where nodes act maliciously, pose a significant challenge to consensus.
- Existing research has focused on developing robust Byzantine fault tolerant (BFT) protocols.
Purpose of the Study:
- To provide an overview of recent progress in BFT consensus protocols for blockchains.
- To discuss both partially synchronous and asynchronous BFT protocol advancements.
- To explore the fundamental building blocks and variants of these protocols.
Main Methods:
- Literature review and synthesis of recent research findings.
- Analysis of partially synchronous and asynchronous BFT protocol designs.
- Categorization of BFT protocols based on their architectural components and fault tolerance models.
Main Results:
- Recent progress has been made in enhancing the efficiency and scalability of BFT consensus protocols.
- Partially synchronous BFT protocols offer improved performance under certain network conditions.
- Asynchronous BFT protocols provide stronger theoretical guarantees but often come with performance trade-offs.
Conclusions:
- Continued research in BFT consensus is crucial for the advancement of secure and scalable blockchain systems.
- Understanding the trade-offs between different BFT protocol types is essential for practical implementation.
- Future work should focus on hybrid approaches and practical optimizations for real-world blockchain applications.
More Related Videos
Related Concept Videos
01:29Issues And Trends In Healthcare Delivery System
5.8K
The issues and trends in healthcare delivery are constantly changing. The COVID-19 pandemic is one recent issue that wreaked havoc on healthcare systems, causing a shortage of healthcare workers, high demand for medicines and supplies, and increased medical expenditure due to a lack of insurance. Other issues include rising healthcare costs and care fragmentation.
Cost Containment
Payment for healthcare services has historically promoted adoption of costly and often unnecessary or inefficient...
Cost Containment
Payment for healthcare services has historically promoted adoption of costly and often unnecessary or inefficient...
5.8K
01:18Fault Types
118
When analyzing a single line-to-ground fault from phase A to ground at a three-phase bus, it is important to consider the fault impedance. This impedance is zero for a bolted fault, equal to the arc impedance for an arcing fault, and represents the total fault impedance for a transmission-line insulator flashover. To derive sequence and phase currents, fault conditions are translated from the phase domain to the sequence domain.
For line-to-line faults occurring between phases B and C, the...
For line-to-line faults occurring between phases B and C, the...
118
02:37Restarting Stalled Replication Forks
5.9K
DNA replication is initiated at sites containing predefined DNA sequences known as origins of replication. DNA is unwound at these sites by the minichromosome maintenance (MCM) helicase and other factors such as Cdc45 and the associated GINS complex.The unwound single strands are protected by replication protein A (RPA) until DNA polymerase starts synthesizing DNA at the 5’ end of the strand in the same direction as the replication fork. To prevent the replication fork from falling apart,...
5.9K
01:25Multimachine Stability
217
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
217
01:21Distributed Loads: Problem Solving
700
Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
700
02:10Translesion DNA Polymerases
10.1K
Translesion (TLS) polymerases rescue stalled DNA polymerases at sites of damaged bases by replacing the replicative polymerase and installing a nucleotide across the damaged site. Doing so, TLS allows additional time for the cell to repair the damage before resuming regular DNA replication.
TLS polymerases are found in all three domains of life - archaea, bacteria, and eukaryotes. Of the different classes of TLS polymerases, members of the Y family are fitted with specialized structures that...
TLS polymerases are found in all three domains of life - archaea, bacteria, and eukaryotes. Of the different classes of TLS polymerases, members of the Y family are fitted with specialized structures that...
10.1K