28 lines
1 KiB
Diff
28 lines
1 KiB
Diff
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--- a/Data/Digest/SHA2.hs
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+++ b/Data/Digest/SHA2.hs
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@@ -106,7 +106,7 @@
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data Hash384 = Hash384 !Word64 !Word64 !Word64 !Word64 !Word64 !Word64 deriving (Eq, Ord)
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data Hash224 = Hash224 !Word32 !Word32 !Word32 !Word32 !Word32 !Word32 !Word32 deriving (Eq, Ord)
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-instance (Integral a) => Show (Hash8 a) where
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+instance (Integral a, Show a) => Show (Hash8 a) where
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showsPrec _ (Hash8 a b c d e f g h) =
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(showHex a) . (' ':) .
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(showHex b) . (' ':) .
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@@ -146,7 +146,7 @@
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where
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bs = bitSize (head r)
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-instance (Integral h, Bits h) => Hash (Hash8 h) where
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+instance (Integral h, Bits h, Show h) => Hash (Hash8 h) where
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toOctets (Hash8 x0 x1 x2 x3 x4 x5 x6 x7) = bitsToOctets =<< [x0, x1, x2, x3, x4, x5, x6, x7]
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instance Hash Hash384 where
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@@ -282,4 +282,4 @@
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-- Test with:
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-- ghc -no-recomp -O --make Data/Digest/SHA2.hs -main-is Data.Digest.SHA2.moduleTest -o moduleTest && ./moduleTest && rm moduleTest
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-moduleTest = runTestTT test_sha2
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\ No newline at end of file
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+moduleTest = runTestTT test_sha2
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