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is a random number generator (rng) testing suite.

Dieharder is a random number generator (rng) testing suite. It is intended to test generators, not files of possibly random numbers as the latter is a fallacious view of what it means to be random. Is the number 7 random? If it is generated by a random process, it might be. If it is made up to serve the purpose of some argument (like this one) it is not. Perfect random number generators produce "unlikely" sequences of random numbers -- at exactly the right average rate. Testing a rng is therefore quite subtle. dieharder is a tool designed to permit one to push a weak generator to unambiguous failure (at the e.g. 0.0001% level), not leave one in the "limbo" of 1% or 5% maybe-failure. It also contains many tests and is extensible so that eventually it will contain many more tests than it already does.



version 3.31.1 (stable)
released on 14 October 2011

User level





Verified by

Verified on


Verified by

Kelly Hopkins

Verified on

10 November 2008

Leaders and contributors

Robert G. Brown Maintainer

Resources and communication

AudienceResource typeURI
HelpMailing List Subscribehttps://lists.phy.duke.edu/mailman/listinfo/dieharder-announce
DeveloperMailing List Subscribehttps://lists.phy.duke.edu/mailman/listinfo/dieharder-devel
Debian (Ref)https://tracker.debian.org/pkg/dieharder

Software prerequisites

This entry (in part or in whole) was last reviewed on 8 February 2018.


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