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

Crypto.MAC.HMAC

Contents

Description

Provide the HMAC (Hash based Message Authentification Code) base algorithm. http://en.wikipedia.org/wiki/HMAC

Synopsis

Documentation

Arguments

:: (ByteArrayAccess key, ByteArrayAccess message, HashAlgorithm a)
=> key	Secret key
-> message	Message to MAC
-> HMAC a

compute a MAC using the supplied hashing function

newtype HMAC a #

Represent an HMAC that is a phantom type with the hash used to produce the mac.

The Eq instance is constant time. No Show instance is provided, to avoid printing by mistake.

Constructors

HMAC
Fields hmacGetDigest :: Digest a

Instances details

Eq (HMAC a) #
Instance details Defined in Crypto.MAC.HMAC Methods (==) :: HMAC a -> HMAC a -> Bool # (/=) :: HMAC a -> HMAC a -> Bool #
ByteArrayAccess (HMAC a) #
Instance details Defined in Crypto.MAC.HMAC Methods length :: HMAC a -> Int # withByteArray :: HMAC a -> (Ptr p -> IO a0) -> IO a0 # copyByteArrayToPtr :: HMAC a -> Ptr p -> IO () #

Incremental

data Context hashalg #

Represent an ongoing HMAC state, that can be appended with update and finalize to an HMAC with hmacFinalize

Constructors

Context !(Context hashalg) !(Context hashalg)

Arguments

:: (ByteArrayAccess key, HashAlgorithm a)
=> key	Secret key
-> Context a

Initialize a new incremental HMAC context

Arguments

:: (ByteArrayAccess message, HashAlgorithm a)
=> Context a	Current HMAC context
-> message	Message to append to the MAC
-> Context a	Updated HMAC context

Incrementally update a HMAC context

Arguments

:: (ByteArrayAccess message, HashAlgorithm a)
=> Context a	Current HMAC context
-> [message]	Messages to append to the MAC
-> Context a	Updated HMAC context

Increamentally update a HMAC context with multiple inputs

Finalize a HMAC context and return the HMAC.