Computer system resilient to a wide class of failures
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United States of America Patent
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Jan 28, 1997
Issued Date -
N/A
app pub date -
Apr 3, 1995
filing date -
Apr 15, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention includes a consensus protocol, a broadcast protocol and a fault tolerant computer system created by using the two protocols together in combination. The protocols and system use the minimum number of processors to create a system tolerant of concurrent processor crash and byzantine failures. The protocols are subject to certain validity conditions. The system in the state of consensus is guaranteed to have all non-faulty processors in agreement as to what action the system should take. The system and protocols can tolerate up to t total number of processor failures, no more than b of which may fail in the byzantine mode.
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