Package Info

ghc-tf-random


High-quality splittable pseudorandom number generator


Unspecified

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.


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

Categories

Releases

Package Version Update ID Released Package Hub Version Platforms Subpackages
0.5-bp154.2.12 info GA Release 2022-05-09 15 SP4
  • AArch64
  • ppc64le
  • x86-64
  • ghc-tf-random
  • ghc-tf-random-devel
0.5-bp153.1.20 info GA Release 2021-04-08 15 SP3
  • AArch64
  • ppc64le
  • x86-64
  • ghc-tf-random
  • ghc-tf-random-devel
0.5-bp152.4.12 info GA Release 2020-06-16 15 SP2
  • AArch64
  • ppc64le
  • x86-64
  • ghc-tf-random
  • ghc-tf-random-devel
0.5-bp151.4.2 info GA Release 2019-07-17 15 SP1
  • ppc64le
  • s390x
  • x86-64
  • ghc-tf-random
  • ghc-tf-random-devel
0.5-bp151.3.12 info GA Release 2019-05-31 15 SP1
  • AArch64
  • ghc-tf-random
  • ghc-tf-random-devel
0.5-bp150.2.6 info GA Release 2018-07-31 15
  • ppc64le
  • ghc-tf-random
  • ghc-tf-random-devel
0.5-bp150.2.7 info GA Release 2018-07-30 15
  • AArch64
  • x86-64
  • ghc-tf-random
  • ghc-tf-random-devel
0.5-2.3 info 5585 2016-09-14 12 GA-SP5
  • ppc64le
  • ghc-tf-random
  • ghc-tf-random-devel
0.5-2.7 info 5585 2016-09-14 12 GA-SP5
  • AArch64
  • s390x
  • x86-64
  • ghc-tf-random
  • ghc-tf-random-devel