Documentation

HMAC is a generic KeyedHashAlgorithm instance to calculate the HMAC based on a HashAlgorithm

hmacInit is the default implementation for hashHMAC and initializes a KeyedHash to calculate the HMAC for a message with the given key.

Example:

let c = untag (hmacInit (fromString "secretkey") :: Tagged SHA256 KeyedHash) in keyedHashFinalize $ keyedHashUpdate c (fromString "secret message")

Untagged variant of hmacInit; takes a (possible undefined) typed HashAlgorithm context as parameter.

Example:

keyedHashFinalize $ flip keyedHashUpdate (fromString "secret message") $ hmacInit' (undefined :: SHA256) (fromString "secretkey")

calculate HMAC with a HashAlgorithm for a key and message

Example:

untag (hmac (fromString "secretkey") (fromString "secret message") :: Tagged SHA256 B.ByteString)

Untagged variant of hmac; takes a (possible undefined) typed HashAlgorithm context as parameter.

Example:

hmac' (undefined :: SHA256) (fromString "secretkey") (fromString "secret message")

calculate HMAC with a HashAlgorithm for a key and lazy message

Example:

untag (hmacLazy (fromString "secretkey") (fromString "secret message") :: Tagged SHA256 B.ByteString)

Untagged variant of hmacLazy; takes a (possible undefined) typed HashAlgorithm context as parameter.

Example:

hmacLazy' (undefined :: SHA256) (fromString "secretkey") (fromString "secret message")