ghc-tf-random

This package contains an implementation of a high-quality splittable
pseudorandom number generator. The generator is based on a cryptographic hash
function built on top of the ThreeFish block cipher. See the paper /Splittable
Pseudorandom Number Generators Using Cryptographic Hashing/ by Claessen, Pałka
for details and the rationale of the design.
The package provides the following:

A splittable PRNG that implements the standard 'System.Random.RandomGen'

class.

The generator also implements an alternative version of the

'System.Random.TF.Gen.RandomGen' class (exported from "System.Random.TF.Gen"),
which requires the generator to return pseudorandom integers from the full
32-bit range, and contains an n-way split function.

An alternative version of the 'Random' class is provided, which is linked to

the new 'RandomGen' class, together with 'Random' instances for some integral
types.

Two functions for initialising the generator with a non-deterministic seed:

one using the system time, and one using the '/dev/urandom' UNIX special file.
The package uses an adapted version of the reference C implementation of
ThreeFish from the reference package of the Skein hash function
(<https://www.schneier.com/skein.html>), originally written by Doug Whiting.
Please note that even though the generator provides very high-quality
pseudorandom numbers, it has not been designed with cryptographic applications
in mind.

          

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License: BSD-3-Clause
URL: https://hackage.haskell.org/package/tf-random