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  5. An O(lg n) Expected Rounds Probabilistic Byzantine Generals Algorithm (The Bigger They Are, The Harder They Fall)

An O(lg n) Expected Rounds Probabilistic Byzantine Generals Algorithm (The Bigger They Are, The Harder They Fall)

File(s)
84-631.ps (268.05 KB)
84-631.pdf (1.14 MB)
Permanent Link(s)
https://hdl.handle.net/1813/6470
Collections
Computer Science Technical Reports
Author
Bracha, Gabriel
Abstract

Byzantine Generals algorithms enable processes to reliably broadcast messages in a system of $n$ processes where up to $t$ of the processes may be faulty. The algorithms are conducted in synchronous rounds of message exchange. For a system where $n = (3 + \delta)t$ we prove the existence of a randomized algorithm whose expected number of rounds is $O(lg n)$. This is an improvement on the lower bound of $t + 1$ rounds required for deterministic algorithms and on the previous result of $t/lg n$ expected number of rounds for randomized algorithms.

Date Issued
1984-08
Publisher
Cornell University
Keywords
computer science
•
technical report
Previously Published as
http://techreports.library.cornell.edu:8081/Dienst/UI/1.0/Display/cul.cs/TR84-631
Type
technical report

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