argon2: Memory-hard password hash and proof-of-work function

[ bsd3, cryptography, library ] [ Propose Tags ]

Argon2 is the key derivation function (KDF) selected as the winner of the Password Hashing Competition. The API exposed by this bindings provide access to the 3 specified variants

  • Argon2d (maximize resistance to GPU cracking attacks),

  • Argon2i (optimized to resist side-channel attacks), and

  • Argon2id (hybrid version combining Argon2d and Argon2i)

and allows to control various parameters (time cost, memory cost, parallelism) of the Argon2 function. Moreover, it is also supported to generate and verify the deprecated version 1.0 hashes, as well as the current version 1.3 hashes.

The Haskell API supports both raw binary hashes as well as the ASCII-based PHC string format.

This version provides bindings to the "20171227" release of the Argon2 reference implementation (libargon2) of the Argon2 password-hashing function.

Please refer to the Argon2 specification for more information.


Manual Flags


Link against system libargon2 library rather than using embedded copy of libargon2. See also pkg-config flag.


Use pkg-config(1) to discover system-library location & flags.

NOTE: This has an effect only when the use-system-library flag is also enabled.


Force use of non-optimised C routines on x86_64. Ineffective when use-system-library flag is active.


Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info


Note: This package has metadata revisions in the cabal description newer than included in the tarball. To unpack the package including the revisions, use 'cabal get'.

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Versions [RSS] 1.0.0, 1.1.0, 1.2.0,,
Change log
Dependencies base (>=4.8 && <4.18), bytestring (>= && <, deepseq (>=1.4 && <1.5), text-short (>=0.1.2 && <0.2) [details]
License BSD-3-Clause[multiple license files]
Author Ollie Charles, Herbert Valerio Riedel
Maintainer Herbert Valerio Riedel <>
Revised Revision 4 made by ChrisDornan at 2023-04-02T22:05:17Z
Category Cryptography
Bug tracker
Source repo head: git clone
Uploaded by HerbertValerioRiedel at 2018-04-07T18:52:12Z
Distributions Debian:
Downloads 4094 total (20 in the last 30 days)
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Status Docs available [build log]
Last success reported on 2018-04-14 [all 1 reports]