entropy alternatives and similar packages
Based on the "Cryptography" category.
Alternatively, view entropy alternatives based on common mentions on social networks and blogs.
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cryptohash
DISCONTINUED. efficient and practical cryptohashing in haskell. DEPRECATED in favor of cryptonite -
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cipher-blowfish
DISCONTINUED. DEPRECATED by cryptonite; A collection of cryptographic block and stream ciphers in haskell -
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cipher-aes
DEPRECATED - use cryptonite - a comprehensive fast AES implementation for haskell that supports aesni and advanced cryptographic modes. -
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crypto-pubkey
DISCONTINUED. DEPRECATED - use cryptonite - Cryptographic public key related algorithms in haskell (RSA,DSA,DH,ElGamal) -
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cipher-aes128
DISCONTINUED. Based on cipher-aes, but using a crypto-api interface and providing resulting IVs for each mode -
crypto-numbers
DISCONTINUED. DEPRECATED - use cryptonite - Cryptographic number related function and algorithms -
crypto-random
DISCONTINUED. DEPRECATED - use cryptonite - Cryptographic random class and entropy gatherer with safe API for haskell
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README
Introduction
This package allows Haskell users to easily acquire entropy for use in critical
security applications by calling out to either windows crypto api, unix/linux's
getrandom and /dev/urandom. Hardware RNGs (currently RDRAND, patches
welcome) are supported via the hardwareRNG function.
Quick Start
To simply get random bytes use getEntropy:
#!/usr/bin/env cabal
{- cabal:
build-depends: base, entropy, bytestring
-}
import qualified Data.ByteString as BS
import System.Entropy
main :: IO ()
main = print . BS.unpack =<< getEntropy 16
-- Example output: [241,191,215,193,225,27,121,244,16,155,252,41,131,38,6,100]
Faster Randoms from Hardware
Most x86 systems include a hardware random number generator. These can be faster but require more trust in the platform:
import qualified Data.ByteString as B
import System.Entropy
eitherRNG :: Int -> IO B.ByteString
eitherRNG sz = maybe (getEntropy sz) pure =<< getHardwareEntropy sz
main :: IO ()
main = print . B.unpack =<< eitherRNG 32
This package supports Windows, {li,u}nix, QNX, and has preliminary support for HaLVM.
Typically tested on Linux and OSX - testers are as welcome as patches.
