haskell/cryptonite
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Merge pull request #199 from ocheron/proxy-backend

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Use Proxy for openBackend
This commit is contained in:
Vincent Hanquez 2017-11-19 16:00:41 +00:00 committed by GitHub
commit c26b331c8e
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2 changed files with 7 additions and 6 deletions
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11
Crypto/Random/Entropy/Backend.hs
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@ -15,6 +15,7 @@ module Crypto.Random.Entropy.Backend
import Foreign.Ptr
import Data.Word (Word8)
import Crypto.Internal.Proxy
import Crypto.Random.Entropy.Source
#ifdef SUPPORT_RDRAND
import Crypto.Random.Entropy.RDRand
@ -30,12 +31,12 @@ supportedBackends :: [IO (Maybe EntropyBackend)]
supportedBackends =
[
#ifdef SUPPORT_RDRAND
openBackend (undefined :: RDRand),
openBackend (Proxy :: Proxy RDRand),
#endif
#ifdef WINDOWS
openBackend (undefined :: WinCryptoAPI)
openBackend (Proxy :: Proxy WinCryptoAPI)
#else
openBackend (undefined :: DevRandom), openBackend (undefined :: DevURandom)
openBackend (Proxy :: Proxy DevRandom), openBackend (Proxy :: Proxy DevURandom)
#endif
]
@ -43,9 +44,9 @@ supportedBackends =
data EntropyBackend = forall b . EntropySource b => EntropyBackend b
-- | Open a backend handle
openBackend :: EntropySource b => b -> IO (Maybe EntropyBackend)
openBackend :: EntropySource b => Proxy b -> IO (Maybe EntropyBackend)
openBackend b = fmap EntropyBackend `fmap` callOpen b
where callOpen :: EntropySource b => b -> IO (Maybe b)
where callOpen :: EntropySource b => Proxy b -> IO (Maybe b)
callOpen _ = entropyOpen
-- | Gather randomness from an open handle

2
cryptonite.cabal
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@ -224,7 +224,7 @@ Library
Other-modules: Crypto.Hash.SHAKE
Crypto.Hash.Blake2
Crypto.Internal.Nat
Build-depends: base >= 4.3 && < 5
Build-depends: base >= 4.6 && < 5
, bytestring
, memory >= 0.14.5
, foundation >= 0.0.8