Crypto.KDF.HKDF

cryptonite-0.13: Cryptography Primitives sink

License | BSD-style
Maintainer | Vincent Hanquez <vincent@snarc.org>
Stability | experimental
Portability | unknown
Safe Haskell | None
Language | Haskell2010

Crypto.KDF.HKDF

Description

Key Derivation Function based on HMAC

See rfc5869

Synopsis

- data PRK a
- extract :: (HashAlgorithm a, ByteArrayAccess salt, ByteArrayAccess ikm) => salt -> ikm -> PRK a
- extractSkip :: (HashAlgorithm a, ByteArrayAccess ikm) => ikm -> PRK a
- expand :: (HashAlgorithm a, ByteArrayAccess info, ByteArray out) => PRK a -> info -> Int -> out

# Documentation

data PRK a

Pseudo Random Key

Instances

Eq (PRK a) |

extract

Arguments

:: (HashAlgorithm a, ByteArrayAccess salt, ByteArrayAccess ikm) |
=> salt | Salt
-> ikm | Input Keying Material
-> PRK a | Pseudo random key

Extract a Pseudo Random Key using the parameter and the underlaying hash mechanism

extractSkip :: (HashAlgorithm a, ByteArrayAccess ikm) => ikm -> PRK a

Create a PRK directly from the input key material, skipping any hmacing

expand

Arguments

:: (HashAlgorithm a, ByteArrayAccess info, ByteArray out) |
=> PRK a | Pseudo Random Key
-> info | Optional context and application specific information
-> Int | Output length in bytes
-> out | Output data

Expand key material of specific length out of the parameters