New: pbft

nigelmarkdias (69)in steemhunt • 3 years ago
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chouchouchen (63)in pbft • 4 years ago
Implementation of PBFT on the blockchain
Content The nodes of the blockchain are divided into two roles: bookkeeping nodes and ordinary nodes The bookkeeping node is responsible for providing bookkeeping services to the entire network…
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dotnow (65)in pbft • 4 years ago
introduction pbft
Content The most commonly used BFT consensus mechanism is the Practical Byzantine Fault Tolerance (PBFT). This algorithm was proposed by Miguel Castro and Barbara Liskov in 1999. It solves the…
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hahawahaha (64)in pbft • 4 years ago
Performance bottleneck of pbft
Content Why do I need 2f+1 messages (including myself and others) to judge the prepare certificate and commit certificate Since we assume N=3f+1, Q=2f+1. See above about Quorum Performance…
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coconaicha (64)in pbft • 4 years ago
Non-Byzantine problem
Security: 2Q-N>=1 (equivalent to 2Q-N>0) Activity: QN>2f N=2f+1, when Q is f+1, the inequality can be satisfied~ About Q If we receive Q messages and a consensus is reached in the Q…
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tianweixi (62)in pbft • 4 years ago
Why is pbft fault tolerance 1/3?
About Quorum In a certain Quorum, the honest nodes reached a consensusThe honest nodes in the entire network also reached the same consensus. How to calculate the size of Quorum: Every honest…
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wangbadan (63)in raft • 4 years ago
Maximum number of fault-tolerant nodes for raft and pbft
Content First, let's think about a question first, why is the maximum number of fault-tolerant nodes of the pbft algorithm (n-1)/3, and the maximum number of fault-tolerant nodes of the raft…
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maladuona (64)in pbft • 4 years ago
pbft algorithm
Content The pbft algorithm is mainly proposed to solve the Byzantine general problem. What is the Byzantine Generals Problem? Byzantium is located in Istanbul, Turkey, the capital of the ancient…
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buzhidao (63)in pbft • 4 years ago
PBFT consensus algorithm
The Byzantine Generals Problem In ancient times, generals from various places in Byzantium went to war. For example, there were 10 generals. They had to communicate with each other and reach a…
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covepark (25)in consensusalgorithm • 5 years ago
[Algorithm]Practical Byzantine Fault Tolerance(PBFT) 합의 알고리즘
비잔티움 장군 문제(Byzantine Generals Problem) 가 발생할 수 있는 상황에서도 네트워크의 합의를 보장하는 알고리즘 비잔티움 장군 문제(Byzantine Generals Problem) 란 비잔티움 제국군의 여러 부대가 지리적으로 떨어진 상태에서 각 부대의 장군들이 전령을 통해 교신하면서 공격 계획을 세울 때, 장군들…
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blockchainer-tmf (29)in fcoin • 6 years ago
公链中的战斗机：交易所公链
公链篇本文大概 7700字阅读需要 8分钟刚刚过去的五一假期，全国国内旅游接待总人数1.95亿人次，实现旅游收入1176.7亿元，这些成绩建立在一个基本的道理上，“要想富先修路”。路 - 就是基础设施；在互联网时代，基础设施 - 就是通信协议层：TCP/IP、HTTP、SMTP、XMPP等等；…
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tschaul (42)in dtube • 6 years ago
📨 Praktische Byzantinische Ausfallsicherheit (PBFT): So funktionieren Ripple, EOS, etc. im Kern
Ich erkläre euch wie praktische byzantinische Ausfallsicherheit (PBFT) funktioniert. PBFT ist ein Typ von Konsens-Verfahren bei dem die Liste der Teilnehmer vorab bekannt ist. Dabei akzeptiert jeder…
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starteos (46)in bos • 6 years ago
New Documents About "BOS IBC" and "Batch-PBFT" Released
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sigmoid (50)in pbft • 6 years ago
PBFT 논문을 읽고 있습니다.
안녕하세요 이더리움 코드보는 Sigmoid입니다. PBFT에 대해서 개념적으로는 알고 있었지만 논문을 읽어본적은 없어서, 이번 기회에 제대로 보다보니, 저도 모르게 번역을 하고 있네요. (해두면 좋을 만한 논문인것 같네요.) 논문을 읽으면서, 몇가지 눈에 띄는 포인트를 정리해 봅니다. PBFT는 합의냐? 비동기 네트워크의 비잔틴…
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cifer (60)in dpos • 6 years ago
PBFT 核心概念以及基于 DPoS 的实现
众做周知, PBFT 是目前能够有效对抗拜占庭问题的算法之一, 使用 PBFT 意味着就算我们的系统中有 2/3 的节点有问题, 只要有 1/3 是好的, 那这个系统就依旧能正常运作. 最近需要在 DPoS 的基础上实现 PBFT 算法, 断断续续看了很久 PBFT 的论文, 提炼出在 DPoS 中需要注意的如下一些概念, 并分析在 DPoS 中如何实现 PBFT 的一些行为. 视图…
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bitjesusblockba (33)in kr • 7 years ago
[코인예수 블록바] 증명방식에 대하여 -2
안녕하세요. 코인예수 블록바입니다. 요즘에 생겨나는 블록체인 프로젝트들에서는 새로운 개념의 증명방식들이 생겨나고 있는데요, 이번 글에서는 조금 생소할 수 있는 내용들을 다루어보려고 합니다. 비트코인이나 이더리움, 퀀텀 등과 같은 가상화폐와 증명 방식들을 다르게 가져가는 친구들이 있어요. 저도 이러한 증명방식들을 접했을 때 좀 생소했기 때문에…
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kblock (58)in consensus • 7 years ago
[케블리] #48. 합의 알고리즘 이해하기 - PBFT Consensus Algorithm
[그림1 - Consensus] 케블리 #44에서 합의 알고리즘 마스터하기 - PoW, PoS 를 다루었습니다. PoW와 PoS 모두 블록체인이라는 분산 원장 시스템에서 노드 간 합의를 이루는 새로운 방법입니다. 특히 비트코인이 제시한 합의 알고리즘은 ‘Nakamoto Consensus’라고도 불릴 만큼, 종전 컴퓨터과학의 합의 알고리즘에서는…
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maxawei (25)in eos • 7 years ago
EOS finality
Steemit produces block every 3 seconds. The last irreversible block (LIB) is found after 14 nodes (2/3 of 21) are built on top of it. So this takes roughly 3X14 = 42 seconds. This is similar to what…
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energist (45)in crypto • 7 years ago
[Blockchain Study] PBFT(Practical Byzantine Fault Tolerance)
PoW, PoS, DPOS 등 다양한 합의 알고리즘(Consensus Algorithm)이 블록체인에 나오고 있는 현재, 또 다른 중요한 합의 알고리즘을 꼽으라고 한다면 당연 PBFT일 것이다. 텐더민트(Tendermint), 네오(Neo) 등에서 사용할 뿐만 아니라 IBM이 만든 Hyperledger와 R3에서도 합의 알고리즘으로 PBFT를…
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