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ACM Transactions on Computer Systems (TOCS), Volume 20 Issue 4, November 2002

COCA: A secure distributed online certification authority
Lidong Zhou, Fred B. Schneider, Robbert Van Renesse
Pages: 329-368
DOI: 10.1145/571637.571638
COCA is a fault-tolerant and secure online certification authority that has been built and deployed both in a local area network and in the Internet. Extremely weak assumptions characterize environments in which COCA's protocols execute correctly: no...

Neural methods for dynamic branch prediction
Daniel A. Jiménez, Calvin Lin
Pages: 369-397
DOI: 10.1145/571637.571639
This article presents a new and highly accurate method for branch prediction. The key idea is to use one of the simplest possible neural methods, the perceptron, as an alternative to the commonly used two-bit counters. The source of our predictor's...

Practical byzantine fault tolerance and proactive recovery
Miguel Castro, Barbara Liskov
Pages: 398-461
DOI: 10.1145/571637.571640
Our growing reliance on online services accessible on the Internet demands highly available systems that provide correct service without interruptions. Software bugs, operator mistakes, and malicious attacks are a major cause of service interruptions...