20fb905bb6
Mostly for the debian stable autobuilds, which have a too old version to use the Crypto.Hash module.
69 lines
1.9 KiB
Haskell
69 lines
1.9 KiB
Haskell
{- Convenience wrapper around cryptohash.
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- Falls back to SHA if it's not available.
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-}
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{-# LANGUAGE CPP #-}
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module Utility.Hash (
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sha1,
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sha224,
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sha256,
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sha384,
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sha512,
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#ifdef WITH_CRYPTOHASH
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skein256,
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skein512,
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#endif
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prop_hashes_stable
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) where
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import qualified Data.ByteString.Lazy as L
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import qualified Data.ByteString.Char8 as C8
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#ifndef WITH_CRYPTOHASH
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import Data.Digest.Pure.SHA
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#else
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import Crypto.Hash
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sha1 :: L.ByteString -> Digest SHA1
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sha1 = hashlazy
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sha224 :: L.ByteString -> Digest SHA224
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sha224 = hashlazy
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sha256 :: L.ByteString -> Digest SHA256
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sha256 = hashlazy
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sha384 :: L.ByteString -> Digest SHA384
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sha384 = hashlazy
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sha512 :: L.ByteString -> Digest SHA512
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sha512 = hashlazy
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-- sha3 is not yet fully standardized
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--sha3 :: L.ByteString -> Digest SHA3
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--sha3 = hashlazy
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skein256 :: L.ByteString -> Digest Skein256_256
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skein256 = hashlazy
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skein512 :: L.ByteString -> Digest Skein512_512
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skein512 = hashlazy
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#endif
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{- Check that all the hashes continue to hash the same. -}
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prop_hashes_stable :: Bool
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prop_hashes_stable = all (\(hasher, result) -> hasher foo == result)
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[ (show . sha1, "0beec7b5ea3f0fdbc95d0dd47f3c5bc275da8a33")
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, (show . sha224, "0808f64e60d58979fcb676c96ec938270dea42445aeefcd3a4e6f8db")
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, (show . sha256, "2c26b46b68ffc68ff99b453c1d30413413422d706483bfa0f98a5e886266e7ae")
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, (show . sha384, "98c11ffdfdd540676b1a137cb1a22b2a70350c9a44171d6b1180c6be5cbb2ee3f79d532c8a1dd9ef2e8e08e752a3babb")
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, (show . sha512, "f7fbba6e0636f890e56fbbf3283e524c6fa3204ae298382d624741d0dc6638326e282c41be5e4254d8820772c5518a2c5a8c0c7f7eda19594a7eb539453e1ed7")
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#ifdef WITH_CRYPTOHASH
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, (show . skein256, "a04efd9a0aeed6ede40fe5ce0d9361ae7b7d88b524aa19917b9315f1ecf00d33")
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, (show . skein512, "fd8956898113510180aa4658e6c0ac85bd74fb47f4a4ba264a6b705d7a8e8526756e75aecda12cff4f1aca1a4c2830fbf57f458012a66b2b15a3dd7d251690a7")
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#endif
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]
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where
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foo = L.fromChunks [C8.pack "foo"]
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