cryptohash: collection of crypto hashes, fast, pure and practical

[ benchmark, bsd3, cryptography, data, library ] [ Propose Tags ]
Versions 0.4, 0.4.1, 0.5, 0.5.1, 0.5.2, 0.5.3, 0.6, 0.6.1, 0.6.2, 0.6.3, 0.7.0, 0.7.1, 0.7.2, 0.7.3, 0.7.4, 0.7.5, 0.7.6, 0.7.7, 0.7.8, 0.7.9, 0.7.10, 0.8.0, 0.8.1, 0.8.2, 0.8.3, 0.8.4, 0.9.0, 0.9.1, 0.10.0, 0.11.0, 0.11.1, 0.11.2, 0.11.3, 0.11.4, 0.11.5, 0.11.6, 0.11.7, 0.11.8, 0.11.9
Dependencies base (>=4 && <6), bytestring, cereal (>=0.2), criterion, crypto‑api (>=0.5), cryptohash, tagged (>=0.1) [details]
License BSD-3-Clause
Copyright Vincent Hanquez <>
Author Vincent Hanquez <>
Maintainer Vincent Hanquez <>
Category Data, Cryptography
Home page
Source repo head: git clone git://
Uploaded by VincentHanquez at Wed Dec 5 12:26:48 UTC 2012
Distributions Arch:0.11.9, Debian:0.11.6, Fedora:0.11.9, FreeBSD:0.11.6, LTSHaskell:0.11.9, NixOS:0.11.9, Stackage:0.11.9, openSUSE:0.11.9
Executables Bench
Downloads 148843 total (321 in the last 30 days)
Rating 1.25 (votes: 1) [estimated by rule of succession]
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A collection of crypto hashes, with a practical incremental and one-pass, pure APIs, with performance close to the fastest implementations available in others languages.

The implementations are made in C with a haskell FFI wrapper that hide the C implementation.

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Build benchmark test


Defines crypto-api instances


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Maintainer's Corner

For package maintainers and hackage trustees

Readme for cryptohash-0.7.10

[back to package description]


hs-cryptohash provides lots of different secure digest algorithms, also called cryptohashes. It exposes every common hashes, but also some more exotic hashes, provides an extensive list of hashes available with a consistant API.

The general performance are comparable to the most optimised hashes available.

The complete list of supported hashes:

  • MD2, MD4, MD5
  • RIPEMD160
  • SHA1
  • SHA-2 family: 224, 256, 384, 512 and the newer 512t
  • SHA-3 (aka Keccak)
  • Skein: 256, 512
  • Tiger
  • Whirlpool

You can easily import any hash with the following:

import qualified Crypto.Hash.<HASH> as <Hash>

suggestion: it's easier to import qualified since there's a collision with the init symbol, but for only importing the hash or hashlazy function there's no such need.

Every hashes, exposes a very similar API.

Incremental API

it's based on 3 different functions, similar to the lowlevel operations of a typical hash:

  • init: create a new hash context
  • update: update non-destructively a new hash context with a strict bytestring
  • finalize: finalize the context and returns a digest bytestring.

all those operations are completely pure, and instead of changing the context as usual in others language, it create a new context each time.

One Pass API

The one pass API use the incremental API under the hood, but expose common operations to create digests out of a bytestring and lazy bytestring.

  • hash: create a digest (init+update+finalize) from a strict bytestring
  • hashlazy: create a digest (init+update+finalize) from a lazy bytestring

Integration with crypto-api

cryptohash is fully integrated with crypto-api and you can use the related function in crypto-api to use any cryptohash modules.


Cryptohash uses C implementations to provides maximum performance. see the cbits directory for more information