System.Crypto.Random

Obtain entropy from system sources. This module is rather untested on Windows (or testers never provided feedback), though testing was requested from the community - please e-mail the maintainer with test results.

Documentation

getEntropy :: ByteLength -> IO ByteString

Inefficiently get a specific number of bytes of cryptographically secure random data using the system-specific facilities.

Use '/dev/urandom' on *nix and CryptAPI when on Windows.

data CryptHandle

Handle for manual resource mangement

openHandle :: IO CryptHandle

Open a CryptHandle

hGetEntropy :: CryptHandle -> Int -> IO ByteString

Read random data from a CryptHandle

closeHandle :: CryptHandle -> IO ()

Close the CryptHandle