cryptohash-sha1

Fast, pure and practical SHA-1 implementation

https://github.com/hvr/cryptohash-sha1

Version on this page:0.11.100.1@rev:3
LTS Haskell 23.0:0.11.101.0@rev:5
Stackage Nightly 2024-12-12:0.11.101.0@rev:5
Latest on Hackage:0.11.101.0@rev:5

See all snapshots cryptohash-sha1 appears in

BSD-3-Clause licensed
This version can be pinned in stack with:cryptohash-sha1-0.11.100.1@sha256:d498bcf7d65e6ffe5e99baac58c6d8ae4d29a7f0b2ada8d6115b8c5310636044,4251

Module documentation for 0.11.100.1

Depends on 2 packages(full list with versions):
Used by 1 package in lts-13.19(full list with versions):

A practical incremental and one-pass, pure API to the SHA-1 cryptographic hash algorithm according to FIPS 180-4 with performance close to the fastest implementations available in other languages.

The core SHA-1 algorithm is implemented in C and is thus expected to be as fast as the standard sha1sum(1) tool. (If, instead, you require a pure Haskell implementation and performance is secondary, please refer to the SHA package.)

Additionally, this package provides support for

conforming to RFC6234, RFC4231, RFC5869, et al..

Packages in the cryptohash-* family

Relationship to the cryptohash package and its API

This package has been originally a fork of cryptohash-0.11.7 because the cryptohash package had been deprecated and so this package continues to satisfy the need for a lightweight package providing the SHA-1 hash algorithm without any dependencies on packages other than base and bytestring. The API exposed by cryptohash-sha1-0.11.*'s Crypto.Hash.SHA1 module is guaranteed to remain a compatible superset of the API provided by the cryptohash-0.11.7's module of the same name.

Consequently, this package is designed to be used as a drop-in replacement for cryptohash-0.11.7's Crypto.Hash.SHA1 module, though with a clearly smaller footprint by almost 3 orders of magnitude.

Changes

0.11.100.1

  • Use __builtin_bswap{32,64} only with GCC >= 4.3

0.11.100.0

  • new hmac and hmaclazy functions providing HMAC-SHA1 computation conforming to RFC2104 and RFC2202

0.11.7.2

  • switch to ‘safe’ FFI for calls where overhead becomes neglible
  • removed inline assembly in favour of portable C constructs
  • fix 32bit length overflow bug in hash function
  • fix inaccurate context-size
  • add context-size verification to incremental API operations
  • fix unaligned memory-accesses

0.11.7.1

  • first version forked off cryptohash-0.11.7 release