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make LargeKey serializable #4

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make LargeKey serializable #4

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2 changes: 1 addition & 1 deletion Crypto.cabal
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Original file line number Diff line number Diff line change
Expand Up @@ -48,7 +48,7 @@ Library
Data.HMAC
Build-Depends: QuickCheck >= 2.4.0.1, HUnit
if flag(small_base)
Build-Depends: base >= 3, base < 5, array, random, pretty
Build-Depends: base >= 3, base < 5, array, random, pretty, data-serializer
else
Build-Depends: base < 3
Ghc-options: -fregs-graph
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10 changes: 10 additions & 0 deletions Data/LargeWord.hs
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@@ -1,3 +1,5 @@
{-# LANGUAGE ScopedTypeVariables #-}

-----------------------------------------------------------------------------
-- |
-- Module : Data.LargeWord
Expand All @@ -20,6 +22,8 @@ import Data.Word
import Data.Bits
import Numeric
import Data.Char
import Data.Proxy(Proxy(Proxy))
import Data.Serializer(Serializable(put), SizedSerializable(size))

-- Keys have certain capabilities.

Expand Down Expand Up @@ -145,3 +149,9 @@ type Word160 = LargeKey Word32 Word128
type Word192 = LargeKey Word64 Word128
type Word224 = LargeKey Word32 Word192
type Word256 = LargeKey Word64 Word192

instance (Serializable a, Serializable b) => Serializable (LargeKey a b) where
put (LargeKey a b) = put a <> put b

instance (SizedSerializable a, SizedSerializable b) => SizedSerializable (LargeKey a b) where
size Proxy = size (Proxy :: Proxy a) + size (Proxy :: Proxy b)