-
Notifications
You must be signed in to change notification settings - Fork 11
/
Crypto.hs
328 lines (281 loc) · 11.1 KB
/
Crypto.hs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
{-# LANGUAGE OverloadedStrings, ExistentialQuantification, ViewPatterns #-}
{- |
Maintainer: Thomas.DuBuisson@gmail.com
Stability: beta
Portability: portable
Basic tests for some common cryptographic algorithms
Most user only need to run the {make,run}Tests functions:
@ runTests (makeMD5Tests (undefined :: MD5Digest))
@
or
@ runTests =<< makeAESTests (undefined :: AESKey)
@
TODO: More KATs are needed - particularly ones for non-AES, SHA, or MD5
algorithms.
-}
module Test.Crypto
(
-- * Test Infrastructure
runTests
, Test(..)
-- * Hash KATs
, makeMD5Tests
, makeSHA1Tests
, makeSHA256Tests
, makeSHA384Tests
, makeSHA512Tests
-- * Block Cipher KATs
, makeAESTests
-- * Hash property tests
, prop_LazyStrictEqual
, prop_DigestLen
, prop_GetPutHash
, prop_BlockLengthIsByteAligned
, prop_OutputLengthIsByteAligned
-- * Utils
, hexStringToBS
) where
import Test.QuickCheck
import Test.ParseNistKATs
import Crypto.Classes
import Crypto.Modes
import qualified Data.ByteString.Lazy.Char8 as LC
import qualified Data.ByteString.Lazy as L
import qualified Data.ByteString as B
import Control.Monad (forM, liftM, filterM)
import Data.Word (Word8)
import Data.Either (rights)
import Data.Maybe (maybeToList)
import Data.List (intersperse)
import qualified Data.Binary as Bin
import qualified Data.Serialize as Ser
import Numeric (readHex)
import Data.Maybe (fromJust)
import Text.Parsec
import Text.Parsec.ByteString
import System.Directory (getDirectoryContents, doesFileExist)
import System.FilePath (takeFileName, combine, dropExtension, (</>))
import Paths_crypto_api
instance Arbitrary Word8 where
arbitrary = (arbitrary :: Gen Int) >>= return . fromIntegral
instance Arbitrary B.ByteString where
arbitrary = do
len <- choose (0,4096) :: Gen Int
words <- forM [0..len] (\_ -> arbitrary)
return $ B.pack words
instance Arbitrary L.ByteString where
arbitrary = do
len <- choose (0,10) :: Gen Int
chunks <- vector len
return $ L.fromChunks chunks
-- |Verify hashing a lazy bytestring is the same as
-- hashing the strict bytestring equivalent.
prop_LazyStrictEqual :: Hash c d => d -> L.ByteString -> Bool
prop_LazyStrictEqual d lps =
let strict = B.concat $ L.toChunks lps
f = hashFunc d
f' = hashFunc' d
in f lps == f' strict
-- |Verify the Serialize and Binary instances result
-- in bytestrings of the correct length for a given digest
prop_DigestLen :: Hash c d => d -> L.ByteString -> Bool
prop_DigestLen d lps =
fromIntegral o == L.length h && o == B.length h'
where f = hashFunc d
f' = hashFunc' d
h = Bin.encode . f $ lps
h' = Ser.encode . f' . B.concat . L.toChunks $ lps
o = (outputLength `for` d) `div` 8
-- |Verify the Serilize and Binary (decode . encode = id)
prop_GetPutHash :: Hash c d => d -> L.ByteString -> Bool
prop_GetPutHash d lps =
Bin.decode (Bin.encode h) == h && Ser.decode (Ser.encode h') == Right h'
where
f = hashFunc d
f' = hashFunc' d
h = f lps
h' = f' . B.concat . L.toChunks $ lps
-- |verify:
--
-- > blockLength .::. d `rem` 8 == 0
prop_BlockLengthIsByteAligned :: Hash c d => d -> Bool
prop_BlockLengthIsByteAligned d = blockLength .::. d `rem` 8 == 0
-- |verify
--
-- > outputLength .::. d `rem` 8 == 0
prop_OutputLengthIsByteAligned :: Hash c d => d -> Bool
prop_OutputLengthIsByteAligned d = blockLength .::. d `rem` 8 == 0
-- |A Test can either be a quickcheck property (constructor 'T') or a
-- known answer test (aka KAT, constructor 'TK'). Known answer tests
-- are simply stored as their boolean result along with a test name.
data Test = forall a. Testable a => T a String | TK Bool String
instance Show Test where
show (T _ name) = "Test " ++ name
show (TK b name) = "KA Test " ++ name
katToTest :: (Eq b) => KAT a b -> Test
katToTest (K i f o s) = TK (f i == o) s
makeHashPropTests :: Hash c d => d -> [Test]
makeHashPropTests d =
[ T (prop_LazyStrictEqual d) "LazyStrictEqual"
, T (prop_DigestLen d) "DigestLen"
, T (prop_GetPutHash d) "GetPutHash"
, T (prop_BlockLengthIsByteAligned d) "BlockLengthIsByteAligned"
, T (prop_OutputLengthIsByteAligned d) "OuputLengthIsByteAligned"
]
-- |FIXME make some generic blockcipher tests
makeBlockCipherPropTests :: BlockCipher k => k -> [Test]
makeBlockCipherPropTests _ = []
data KAT i o = K i (i -> o) o String
runKATs :: (Eq o) => [KAT i o] -> Bool
runKATs = all goodKAT
where
goodKAT (K i f o _) = f i == o
-- *Known Answer Tests
toD :: Hash c d => d -> String -> d
toD d str = (Bin.decode $ L.fromChunks [hexStringToBS str]) `asTypeOf` d
-- |Convert hex strings to bytestrings, for example:
--
-- > "3adf91c0" ==> B.pack [0x3a, 0xdf, 0x91, 0xc0]
--
-- Strings of odd length will cause an exception as will non-hex characters such as '0x'.
hexStringToBS :: String -> B.ByteString
hexStringToBS [] = B.empty
hexStringToBS (_:[]) = error "Not an even number of hex characters in alledged 'digest'"
hexStringToBS (a:b:xs) = B.cons (rHex (a:b:[])) (hexStringToBS xs)
where
rHex = fst . head . readHex
dogStr = "The quick brown fox jumps over the lazy dog"
cogStr = "The quick brown fox jumps over the lazy cog"
getAES_KATs :: BlockCipher k => k -> IO [KAT B.ByteString B.ByteString]
getAES_KATs k = do
dataDir <- getDataFileName ("Test" </> "KAT_AES")
filesAndDirs <- getDirectoryContents dataDir
files <- filterM doesFileExist (map (combine dataDir) filesAndDirs)
recEs <- mapM (parseFromFile parseCategory) files
let recs = map snd (rights recEs)
fName = map takeFileName files
testTypes = map getTestSig fName :: [String]
tts = zip testTypes recs :: [TypedTest]
kats = concatMap (uncurry (nistTestsToKAT_AES k)) (zip (zip testTypes recs) fName)
return kats
-- Obtain the type of AES test, such as "ECBe" or "CBCd"
getTestSig :: FilePath -> String
getTestSig f = take 3 f ++ [last (dropExtension f)]
sigToF :: BlockCipher k => String -> Maybe (k -> IV k -> B.ByteString -> (B.ByteString, IV k))
sigToF "CBCe" = Just cbc'
sigToF "CBCd" = Just unCbc'
sigToF "OFBe" = Just ofb'
sigToF "OFBd" = Just unOfb'
sigToF _ = Nothing
isEnc :: String -> Bool
isEnc str | null str = False
| last str == 'e' = True
| otherwise = False
funcAndBool x = (sigToF x, isEnc x)
nistTestsToKAT_AES :: BlockCipher k => k -> TypedTest -> String -> [KAT B.ByteString B.ByteString]
nistTestsToKAT_AES eK ("ECBe", tests) n =
let ks = map testToKAT tests
in concatMap maybeToList ks
where
testToKAT t = testToKatBasic t encryptBlock True eK n
nistTestsToKAT_AES eK ("ECBd", tests) n =
let ks = map testToKAT tests
in concatMap maybeToList ks
where
testToKAT t = testToKatBasic t decryptBlock False eK n
nistTestsToKAT_AES ek (funcAndBool -> (Just modeFunc,enc), tests) n =
let ks = map testToKAT tests
in concatMap maybeToList ks
where
testToKAT t = do
Right iv <- liftM (Ser.decode . hexStringToBS) (lookup "IV" t)
testToKatBasic t ((\i k -> fst . modeFunc k i) iv) enc ek n
nistTestsToKAT_AES eK _ _ = [] -- FIXME add CTR, OFB, GCM and other modes
testToKatBasic t f enc ek name = do
cnt <- lookup "COUNT" t
ct <- lookup "CIPHERTEXT" t
pt <- lookup "PLAINTEXT" t
k <- lookup "KEY" t
let realKey = (fromJust . buildKey . hexStringToBS $ k) `asTypeOf` ek
ctBS = hexStringToBS ct
ptBS = hexStringToBS pt
if enc
then return (K ptBS (f realKey) ctBS (name ++ "-" ++ cnt))
else return (K ctBS (f realKey) ptBS (name ++ "-" ++ cnt))
md5KATs :: Hash c d => d -> [KAT L.ByteString d]
md5KATs d =
[ K "" hash (toD d "d41d8cd98f00b204e9800998ecf8427e") "md5KAT1"
, K "a" hash (toD d "0cc175b9c0f1b6a831c399e269772661") "md5KAT2"
, K "abc" hash (toD d "900150983cd24fb0d6963f7d28e17f72") "md5KAT3"
, K "message digest" hash (toD d "f96b697d7cb7938d525a2f31aaf161d0") "md5KAT4"
, K "abcdefghijklmnopqrstuvwxyz" hash (toD d "c3fcd3d76192e4007dfb496cca67e13b") "md5KAT5"
, K "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" hash (toD d "d174ab98d277d9f5a5611c2c9f419d9f") "md5KAT6"
, K "12345678901234567890123456789012345678901234567890123456789012345678901234567890" hash (toD d "57edf4a22be3c955ac49da2e2107b67a") "md5KAT7"
]
sha1KATs d =
[ K "" hash (toD d "da39a3ee5e6b4b0d3255bfef95601890afd80709") "sha1KAT1"
, K dogStr hash (toD d "2fd4e1c67a2d28fced849ee1bb76e7391b93eb12") "sha1KAT2"
, K cogStr hash (toD d "de9f2c7fd25e1b3afad3e85a0bd17d9b100db4b3") "sha1KAT3"
]
sha224KATs d =
[ K "" hash (toD d "d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f") "sha224KAT1"
, K dogStr hash (toD d "730e109bd7a8a32b1cb9d9a09aa2325d2430587ddbc0c38bad911525") "sha224KAT2"
, K cogStr hash (toD d "fee755f44a55f20fb3362cdc3c493615b3cb574ed95ce610ee5b1e9b") "sha224KAT3"
]
sha256KATs d =
[ K "" hash (toD d "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855") "sha256KAT1"
, K dogStr hash
(toD d "d7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592") "sha256KAT2"
, K cogStr hash
(toD d "e4c4d8f3bf76b692de791a173e05321150f7a345b46484fe427f6acc7ecc81be") "sha256KAT3"
]
sha384KATs d =
[ K "" hash
(toD d "38b060a751ac96384cd9327eb1b1e36a21fdb71114be07434c0cc7bf63f6e1da274edebfe76f65fbd51ad2f14898b95b") "sha384KAT1"
, K dogStr hash
(toD d "ca737f1014a48f4c0b6dd43cb177b0afd9e5169367544c494011e3317dbf9a509cb1e5dc1e85a941bbee3d7f2afbc9b1") "sha384KAT2"
, K cogStr hash
(toD d "098cea620b0978caa5f0befba6ddcf22764bea977e1c70b3483edfdf1de25f4b40d6cea3cadf00f809d422feb1f0161b") "sha384KAT3"
]
sha512KATs d =
[ K "" hash (toD d $ "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a92"
++ "1d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417"
++ "a81a538327af927da3e") "sha512KAT1"
, K dogStr hash (toD d $ "07e547d9586f6a73f73fbac0435ed76951218fb7d0c8d788a30"
++ "9d785436bbb642e93a252a954f23912547d1e8a3b5ed6e1bfd7097"
++ "821233fa0538f3db854fee6") "sha512KAT2"
, K cogStr hash (toD d $ "3eeee1d0e11733ef152a6c29503b3ae20c4f1f3cda4cb26f1bc1"
++ "a41f91c7fe4ab3bd86494049e201c4bd5155f31ecb7a3c8606843c4"
++ "cc8dfcab7da11c8ae5045") "sha512KAT3"
]
-- |Generic routine to construct a series of tests for any hash. Used by the 'make[SHA,MD5]Tests routines.
makeHashTests :: Hash c d => (d -> [KAT L.ByteString d]) -> d -> [Test]
makeHashTests k d = map katToTest (k d) ++ makeHashPropTests d
makeMD5Tests :: Hash c d => d -> [Test]
makeMD5Tests = makeHashTests md5KATs
makeSHA1Tests :: Hash c d => d -> [Test]
makeSHA1Tests = makeHashTests sha1KATs
makeSHA224Tests :: Hash c d => d -> [Test]
makeSHA224Tests = makeHashTests sha224KATs
makeSHA256Tests :: Hash c d => d -> [Test]
makeSHA256Tests = makeHashTests sha256KATs
makeSHA384Tests :: Hash c d => d -> [Test]
makeSHA384Tests = makeHashTests sha384KATs
makeSHA512Tests :: Hash c d => d -> [Test]
makeSHA512Tests = makeHashTests sha512KATs
-- |Based on NIST KATs, build a list
-- of Tests for the instantiated AES
-- algorithm.
makeAESTests :: BlockCipher k => k -> IO [Test]
makeAESTests k = do
kats <- getAES_KATs k
return (map katToTest kats ++ makeBlockCipherPropTests k)
-- |Run a single test
runTest :: Test -> IO ()
runTest (T a s) = do
putStr ("prop_" ++ s ++ ": ")
quickCheck a
runTest (TK b s) = putStrLn ("kat_" ++ s ++ ": " ++ show b)
-- |Run a list of tests
runTests :: [Test] -> IO ()
runTests = mapM_ runTest