updates :: (ByteArrayAccess message, HashAlgorithm a)
        => Context a -- ^ Current HMAC context
        -> [message] -- ^ Messages to append to the MAC
        -> Context a -- ^ Updated HMAC context
updates (Context octx ictx) msgs =
    Context octx (hashUpdates ictx msgs)
updates :: (ByteArrayAccess message, HashAlgorithm a)
        => Context a -- ^ Current HMAC context
        -> [message] -- ^ Messages to append to the MAC
        -> Context a
updates (Context octx ictx) msgs =
    Context octx (hashUpdates ictx msgs)
updates (Context octx ictx) msgs =
    Context octx (hashUpdates ictx msgs)