[hash] add haddock documentation

Crypto/Hash/IO.hs

@@ -23,18 +23,26 @@ import           Crypto.Hash.Types
 import qualified Crypto.Internal.ByteArray as B
 import           Foreign.Ptr
 
+-- | A Mutable hash context
 newtype MutableContext a = MutableContext B.Bytes
     deriving (B.ByteArrayAccess)
 
+-- | Create a new mutable hash context.
+--
+-- the algorithm used is automatically determined from the return constraint.
 hashMutableInit :: HashAlgorithm alg => IO (MutableContext alg)
 hashMutableInit = doInit undefined B.alloc
   where
         doInit :: HashAlgorithm a => a -> (Int -> (Ptr (Context a) -> IO ()) -> IO B.Bytes) -> IO (MutableContext a)
         doInit alg alloc = MutableContext `fmap` alloc (hashInternalContextSize alg) hashInternalInit
 
+-- | Create a new mutable hash context.
+--
+-- The algorithm is explicitely passed as parameter
 hashMutableInitWith :: HashAlgorithm alg => alg -> IO (MutableContext alg)
 hashMutableInitWith _ = hashMutableInit
 
+-- | Update a mutable hash context in place
 hashMutableUpdate :: (B.ByteArrayAccess ba, HashAlgorithm a) => MutableContext a -> ba -> IO ()
 hashMutableUpdate mc dat = doUpdate mc (B.withByteArray mc)
   where doUpdate :: HashAlgorithm a => MutableContext a -> ((Ptr (Context a) -> IO ()) -> IO ()) -> IO ()
@@ -43,11 +51,12 @@ hashMutableUpdate mc dat = doUpdate mc (B.withByteArray mc)
             B.withByteArray dat $ \d   ->
                 hashInternalUpdate ctx d (fromIntegral $ B.length dat)
 
+-- | Finalize a mutable hash context and compute a digest
 hashMutableFinalize :: HashAlgorithm a => MutableContext a -> IO (Digest a)
 hashMutableFinalize mc = doFinalize undefined (B.withByteArray mc) B.alloc
   where doFinalize :: HashAlgorithm alg
                    => alg
-                   -> ((Ptr (Context alg) -> IO ()) -> IO ()) 
+                   -> ((Ptr (Context alg) -> IO ()) -> IO ())
                    -> (Int -> (Ptr (Digest alg)  -> IO ()) -> IO B.Bytes)
                    -> IO (Digest alg)
         doFinalize alg withCtx allocDigest = do

Crypto/Hash/Kekkak.hs

@@ -18,6 +18,7 @@ import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
 
+-- | Kekkak (224 bits) cryptographic hash algorithm
 data Kekkak_224 = Kekkak_224
     deriving (Show)
 
@@ -29,6 +30,7 @@ instance HashAlgorithm Kekkak_224 where
     hashInternalUpdate        = c_kekkak_update
     hashInternalFinalize      = c_kekkak_finalize
 
+-- | Kekkak (256 bits) cryptographic hash algorithm
 data Kekkak_256 = Kekkak_256
     deriving (Show)
 
@@ -40,6 +42,7 @@ instance HashAlgorithm Kekkak_256 where
     hashInternalUpdate        = c_kekkak_update
     hashInternalFinalize      = c_kekkak_finalize
 
+-- | Kekkak (384 bits) cryptographic hash algorithm
 data Kekkak_384 = Kekkak_384
     deriving (Show)
 
@@ -51,6 +54,7 @@ instance HashAlgorithm Kekkak_384 where
     hashInternalUpdate        = c_kekkak_update
     hashInternalFinalize      = c_kekkak_finalize
 
+-- | Kekkak (512 bits) cryptographic hash algorithm
 data Kekkak_512 = Kekkak_512
     deriving (Show)
 
@@ -63,11 +67,11 @@ instance HashAlgorithm Kekkak_512 where
     hashInternalFinalize      = c_kekkak_finalize
 
 
-foreign import ccall unsafe "cryptonite_kekkak.h cryptonite_kekkak_init"
+foreign import ccall unsafe "cryptonite_kekkak_init"
     c_kekkak_init :: Ptr (Context a) -> Word32 -> IO ()
 
-foreign import ccall "cryptonite_kekkak.h cryptonite_kekkak_update"
+foreign import ccall "cryptonite_kekkak_update"
     c_kekkak_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
 
-foreign import ccall unsafe "cryptonite_kekkak.h cryptonite_kekkak_finalize"
+foreign import ccall unsafe "cryptonite_kekkak_finalize"
     c_kekkak_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

Crypto/Hash/MD2.hs

@@ -15,6 +15,7 @@ import           Crypto.Hash.Types
 import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
+-- | MD2 cryptographic hash algorithm
 data MD2 = MD2
     deriving (Show)
 
@@ -26,11 +27,11 @@ instance HashAlgorithm MD2 where
     hashInternalUpdate        = c_md2_update
     hashInternalFinalize      = c_md2_finalize
 
-foreign import ccall unsafe "cryptonite_md2.h cryptonite_md2_init"
+foreign import ccall unsafe "cryptonite_md2_init"
     c_md2_init :: Ptr (Context a)-> IO ()
 
-foreign import ccall "cryptonite_md2.h cryptonite_md2_update"
+foreign import ccall "cryptonite_md2_update"
     c_md2_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
 
-foreign import ccall unsafe "cryptonite_md2.h cryptonite_md2_finalize"
+foreign import ccall unsafe "cryptonite_md2_finalize"
     c_md2_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

Crypto/Hash/MD4.hs

@@ -15,6 +15,7 @@ import           Crypto.Hash.Types
 import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
+-- | MD4 cryptographic hash algorithm
 data MD4 = MD4
     deriving (Show)
 
@@ -26,11 +27,11 @@ instance HashAlgorithm MD4 where
     hashInternalUpdate        = c_md4_update
     hashInternalFinalize      = c_md4_finalize
 
-foreign import ccall unsafe "cryptonite_md4.h cryptonite_md4_init"
+foreign import ccall unsafe "cryptonite_md4_init"
     c_md4_init :: Ptr (Context a)-> IO ()
 
-foreign import ccall "cryptonite_md4.h cryptonite_md4_update"
+foreign import ccall "cryptonite_md4_update"
     c_md4_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
 
-foreign import ccall unsafe "cryptonite_md4.h cryptonite_md4_finalize"
+foreign import ccall unsafe "cryptonite_md4_finalize"
     c_md4_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

Crypto/Hash/MD5.hs

@@ -15,6 +15,7 @@ import           Crypto.Hash.Types
 import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
+-- | MD5 cryptographic hash algorithm
 data MD5 = MD5
     deriving (Show)
 
@@ -26,11 +27,11 @@ instance HashAlgorithm MD5 where
     hashInternalUpdate        = c_md5_update
     hashInternalFinalize      = c_md5_finalize
 
-foreign import ccall unsafe "cryptonite_md5.h cryptonite_md5_init"
+foreign import ccall unsafe "cryptonite_md5_init"
     c_md5_init :: Ptr (Context a)-> IO ()
 
-foreign import ccall "cryptonite_md5.h cryptonite_md5_update"
+foreign import ccall "cryptonite_md5_update"
     c_md5_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
 
-foreign import ccall unsafe "cryptonite_md5.h cryptonite_md5_finalize"
+foreign import ccall unsafe "cryptonite_md5_finalize"
     c_md5_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

Crypto/Hash/RIPEMD160.hs

@@ -15,6 +15,7 @@ import           Crypto.Hash.Types
 import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
+-- | RIPEMD160 cryptographic hash algorithm
 data RIPEMD160 = RIPEMD160
     deriving (Show)
 
@@ -26,11 +27,11 @@ instance HashAlgorithm RIPEMD160 where
     hashInternalUpdate        = c_ripemd160_update
     hashInternalFinalize      = c_ripemd160_finalize
 
-foreign import ccall unsafe "cryptonite_ripemd.h cryptonite_ripemd160_init"
+foreign import ccall unsafe "cryptonite_ripemd160_init"
     c_ripemd160_init :: Ptr (Context a)-> IO ()
 
-foreign import ccall "cryptonite_ripemd.h cryptonite_ripemd160_update"
+foreign import ccall "cryptonite_ripemd160_update"
     c_ripemd160_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
 
-foreign import ccall unsafe "cryptonite_ripemd.h cryptonite_ripemd160_finalize"
+foreign import ccall unsafe "cryptonite_ripemd160_finalize"
     c_ripemd160_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

Crypto/Hash/SHA1.hs

@@ -15,6 +15,7 @@ import           Crypto.Hash.Types
 import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
+-- | SHA1 cryptographic hash algorithm
 data SHA1 = SHA1
     deriving (Show)
 
@@ -26,11 +27,11 @@ instance HashAlgorithm SHA1 where
     hashInternalUpdate        = c_sha1_update
     hashInternalFinalize      = c_sha1_finalize
 
-foreign import ccall unsafe "cryptonite_sha1.h cryptonite_sha1_init"
+foreign import ccall unsafe "cryptonite_sha1_init"
     c_sha1_init :: Ptr (Context a)-> IO ()
 
-foreign import ccall "cryptonite_sha1.h cryptonite_sha1_update"
+foreign import ccall "cryptonite_sha1_update"
     c_sha1_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
 
-foreign import ccall unsafe "cryptonite_sha1.h cryptonite_sha1_finalize"
+foreign import ccall unsafe "cryptonite_sha1_finalize"
     c_sha1_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

Crypto/Hash/SHA224.hs

@@ -15,6 +15,7 @@ import           Crypto.Hash.Types
 import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
+-- | SHA224 cryptographic hash algorithm
 data SHA224 = SHA224
     deriving (Show)
 
@@ -26,11 +27,11 @@ instance HashAlgorithm SHA224 where
     hashInternalUpdate        = c_sha224_update
     hashInternalFinalize      = c_sha224_finalize
 
-foreign import ccall unsafe "cryptonite_sha256.h cryptonite_sha224_init"
+foreign import ccall unsafe "cryptonite_sha224_init"
     c_sha224_init :: Ptr (Context a)-> IO ()
 
-foreign import ccall "cryptonite_sha256.h cryptonite_sha224_update"
+foreign import ccall "cryptonite_sha224_update"
     c_sha224_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
 
-foreign import ccall unsafe "cryptonite_sha256.h cryptonite_sha224_finalize"
+foreign import ccall unsafe "cryptonite_sha224_finalize"
     c_sha224_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

Crypto/Hash/SHA256.hs

@@ -15,6 +15,7 @@ import           Crypto.Hash.Types
 import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
+-- | SHA256 cryptographic hash algorithm
 data SHA256 = SHA256
     deriving (Show)
 
@@ -26,11 +27,11 @@ instance HashAlgorithm SHA256 where
     hashInternalUpdate        = c_sha256_update
     hashInternalFinalize      = c_sha256_finalize
 
-foreign import ccall unsafe "cryptonite_sha256.h cryptonite_sha256_init"
+foreign import ccall unsafe "cryptonite_sha256_init"
     c_sha256_init :: Ptr (Context a)-> IO ()
 
-foreign import ccall "cryptonite_sha256.h cryptonite_sha256_update"
+foreign import ccall "cryptonite_sha256_update"
     c_sha256_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
 
-foreign import ccall unsafe "cryptonite_sha256.h cryptonite_sha256_finalize"
+foreign import ccall unsafe "cryptonite_sha256_finalize"
     c_sha256_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

Crypto/Hash/SHA3.hs

@@ -18,6 +18,7 @@ import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
 
+-- | SHA3 (224 bits) cryptographic hash algorithm
 data SHA3_224 = SHA3_224
     deriving (Show)
 
@@ -29,6 +30,7 @@ instance HashAlgorithm SHA3_224 where
     hashInternalUpdate        = c_sha3_update
     hashInternalFinalize      = c_sha3_finalize
 
+-- | SHA3 (256 bits) cryptographic hash algorithm
 data SHA3_256 = SHA3_256
     deriving (Show)
 
@@ -40,6 +42,7 @@ instance HashAlgorithm SHA3_256 where
     hashInternalUpdate        = c_sha3_update
     hashInternalFinalize      = c_sha3_finalize
 
+-- | SHA3 (384 bits) cryptographic hash algorithm
 data SHA3_384 = SHA3_384
     deriving (Show)
 
@@ -51,6 +54,7 @@ instance HashAlgorithm SHA3_384 where
     hashInternalUpdate        = c_sha3_update
     hashInternalFinalize      = c_sha3_finalize
 
+-- | SHA3 (512 bits) cryptographic hash algorithm
 data SHA3_512 = SHA3_512
     deriving (Show)
 
@@ -63,11 +67,11 @@ instance HashAlgorithm SHA3_512 where
     hashInternalFinalize      = c_sha3_finalize
 
 
-foreign import ccall unsafe "cryptonite_sha3.h cryptonite_sha3_init"
+foreign import ccall unsafe "cryptonite_sha3_init"
     c_sha3_init :: Ptr (Context a) -> Word32 -> IO ()
 
-foreign import ccall "cryptonite_sha3.h cryptonite_sha3_update"
+foreign import ccall "cryptonite_sha3_update"
     c_sha3_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
 
-foreign import ccall unsafe "cryptonite_sha3.h cryptonite_sha3_finalize"
+foreign import ccall unsafe "cryptonite_sha3_finalize"
     c_sha3_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

Crypto/Hash/SHA384.hs

@@ -15,6 +15,7 @@ import           Crypto.Hash.Types
 import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
+-- | SHA384 cryptographic hash algorithm
 data SHA384 = SHA384
     deriving (Show)
 
@@ -26,11 +27,11 @@ instance HashAlgorithm SHA384 where
     hashInternalUpdate        = c_sha384_update
     hashInternalFinalize      = c_sha384_finalize
 
-foreign import ccall unsafe "cryptonite_sha512.h cryptonite_sha384_init"
+foreign import ccall unsafe "cryptonite_sha384_init"
     c_sha384_init :: Ptr (Context a)-> IO ()
 
-foreign import ccall "cryptonite_sha512.h cryptonite_sha384_update"
+foreign import ccall "cryptonite_sha384_update"
     c_sha384_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
 
-foreign import ccall unsafe "cryptonite_sha512.h cryptonite_sha384_finalize"
+foreign import ccall unsafe "cryptonite_sha384_finalize"
     c_sha384_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

Crypto/Hash/SHA512.hs

@@ -15,6 +15,7 @@ import           Crypto.Hash.Types
 import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
+-- | SHA512 cryptographic hash algorithm
 data SHA512 = SHA512
     deriving (Show)
 
@@ -26,11 +27,11 @@ instance HashAlgorithm SHA512 where
     hashInternalUpdate        = c_sha512_update
     hashInternalFinalize      = c_sha512_finalize
 
-foreign import ccall unsafe "cryptonite_sha512.h cryptonite_sha512_init"
+foreign import ccall unsafe "cryptonite_sha512_init"
     c_sha512_init :: Ptr (Context a)-> IO ()
 
-foreign import ccall "cryptonite_sha512.h cryptonite_sha512_update"
+foreign import ccall "cryptonite_sha512_update"
     c_sha512_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
 
-foreign import ccall unsafe "cryptonite_sha512.h cryptonite_sha512_finalize"
+foreign import ccall unsafe "cryptonite_sha512_finalize"
     c_sha512_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

Crypto/Hash/SHA512t.hs

@@ -18,6 +18,7 @@ import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
 
+-- | SHA512t (224 bits) cryptographic hash algorithm
 data SHA512t_224 = SHA512t_224
     deriving (Show)
 
@@ -29,6 +30,7 @@ instance HashAlgorithm SHA512t_224 where
     hashInternalUpdate        = c_sha512t_update
     hashInternalFinalize      = c_sha512t_finalize
 
+-- | SHA512t (256 bits) cryptographic hash algorithm
 data SHA512t_256 = SHA512t_256
     deriving (Show)
 

Crypto/Hash/Skein256.hs

@@ -18,6 +18,7 @@ import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
 
+-- | Skein256 (224 bits) cryptographic hash algorithm
 data Skein256_224 = Skein256_224
     deriving (Show)
 
@@ -29,6 +30,7 @@ instance HashAlgorithm Skein256_224 where
     hashInternalUpdate        = c_skein256_update
     hashInternalFinalize      = c_skein256_finalize
 
+-- | Skein256 (256 bits) cryptographic hash algorithm
 data Skein256_256 = Skein256_256
     deriving (Show)
 
@@ -41,11 +43,11 @@ instance HashAlgorithm Skein256_256 where
     hashInternalFinalize      = c_skein256_finalize
 
 
-foreign import ccall unsafe "cryptonite_skein256.h cryptonite_skein256_init"
+foreign import ccall unsafe "cryptonite_skein256_init"
     c_skein256_init :: Ptr (Context a) -> Word32 -> IO ()
 
-foreign import ccall "cryptonite_skein256.h cryptonite_skein256_update"
+foreign import ccall "cryptonite_skein256_update"
     c_skein256_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
 
-foreign import ccall unsafe "cryptonite_skein256.h cryptonite_skein256_finalize"
+foreign import ccall unsafe "cryptonite_skein256_finalize"
     c_skein256_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

Crypto/Hash/Skein512.hs

@@ -18,6 +18,7 @@ import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
 
+-- | Skein512 (224 bits) cryptographic hash algorithm
 data Skein512_224 = Skein512_224
     deriving (Show)
 
@@ -29,6 +30,7 @@ instance HashAlgorithm Skein512_224 where
     hashInternalUpdate        = c_skein512_update
     hashInternalFinalize      = c_skein512_finalize
 
+-- | Skein512 (256 bits) cryptographic hash algorithm
 data Skein512_256 = Skein512_256
     deriving (Show)
 
@@ -40,6 +42,7 @@ instance HashAlgorithm Skein512_256 where
     hashInternalUpdate        = c_skein512_update
     hashInternalFinalize      = c_skein512_finalize
 
+-- | Skein512 (384 bits) cryptographic hash algorithm
 data Skein512_384 = Skein512_384
     deriving (Show)
 
@@ -51,6 +54,7 @@ instance HashAlgorithm Skein512_384 where
     hashInternalUpdate        = c_skein512_update
     hashInternalFinalize      = c_skein512_finalize
 
+-- | Skein512 (512 bits) cryptographic hash algorithm
 data Skein512_512 = Skein512_512
     deriving (Show)
 
@@ -63,11 +67,11 @@ instance HashAlgorithm Skein512_512 where
     hashInternalFinalize      = c_skein512_finalize
 
 
-foreign import ccall unsafe "cryptonite_skein512.h cryptonite_skein512_init"
+foreign import ccall unsafe "cryptonite_skein512_init"
     c_skein512_init :: Ptr (Context a) -> Word32 -> IO ()
 
-foreign import ccall "cryptonite_skein512.h cryptonite_skein512_update"
+foreign import ccall "cryptonite_skein512_update"
     c_skein512_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
 
-foreign import ccall unsafe "cryptonite_skein512.h cryptonite_skein512_finalize"
+foreign import ccall unsafe "cryptonite_skein512_finalize"
     c_skein512_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

Crypto/Hash/Tiger.hs

@@ -15,6 +15,7 @@ import           Crypto.Hash.Types
 import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
+-- | Tiger cryptographic hash algorithm
 data Tiger = Tiger
     deriving (Show)
 
@@ -26,11 +27,11 @@ instance HashAlgorithm Tiger where
     hashInternalUpdate        = c_tiger_update
     hashInternalFinalize      = c_tiger_finalize
 
-foreign import ccall unsafe "cryptonite_tiger.h cryptonite_tiger_init"
+foreign import ccall unsafe "cryptonite_tiger_init"
     c_tiger_init :: Ptr (Context a)-> IO ()
 
-foreign import ccall "cryptonite_tiger.h cryptonite_tiger_update"
+foreign import ccall "cryptonite_tiger_update"
     c_tiger_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
 
-foreign import ccall unsafe "cryptonite_tiger.h cryptonite_tiger_finalize"
+foreign import ccall unsafe "cryptonite_tiger_finalize"
     c_tiger_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

Crypto/Hash/Whirlpool.hs

@@ -15,6 +15,7 @@ import           Crypto.Hash.Types
 import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
+-- | Whirlpool cryptographic hash algorithm
 data Whirlpool = Whirlpool
     deriving (Show)
 
@@ -26,11 +27,11 @@ instance HashAlgorithm Whirlpool where
     hashInternalUpdate        = c_whirlpool_update
     hashInternalFinalize      = c_whirlpool_finalize
 
-foreign import ccall unsafe "cryptonite_whirlpool.h cryptonite_whirlpool_init"
+foreign import ccall unsafe "cryptonite_whirlpool_init"
     c_whirlpool_init :: Ptr (Context a)-> IO ()
 
-foreign import ccall "cryptonite_whirlpool.h cryptonite_whirlpool_update"
+foreign import ccall "cryptonite_whirlpool_update"
     c_whirlpool_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
 
-foreign import ccall unsafe "cryptonite_whirlpool.h cryptonite_whirlpool_finalize"
+foreign import ccall unsafe "cryptonite_whirlpool_finalize"
     c_whirlpool_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

gen/template/hash-len.hs

@@ -18,6 +18,7 @@ import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
 %{CUSTOMIZABLE%}
+-- | %%MODULENAME%% (%%CUSTOM_BITSIZE%% bits) cryptographic hash algorithm
 data %%MODULENAME%%_%%CUSTOM_BITSIZE%% = %%MODULENAME%%_%%CUSTOM_BITSIZE%%
     deriving (Show)
 

gen/template/hash.hs

@@ -15,6 +15,7 @@ import           Crypto.Hash.Types
 import           Foreign.Ptr (Ptr)
 import           Data.Word (Word8, Word32)
 
+-- | %%MODULENAME%% cryptographic hash algorithm
 data %%MODULENAME%% = %%MODULENAME%%
     deriving (Show)