content: {-# LANGUAGE ImportQualifiedPost #-}
  {-# LANGUAGE OverloadedStrings #-}
  
  module Haskoin.Crypto.Keys.MnemonicSpec (spec) where
  
  import Control.Monad (forM_, zipWithM_)
  import Data.Bits (shiftR, (.&.))
  import Data.ByteString qualified as BS
  import Data.Either (fromRight)
  import Data.List (isPrefixOf)
  import Data.Maybe (fromJust)
  import Data.Serialize (Serialize, encode)
  import Data.Text (Text)
  import Data.Text qualified as T
  import Data.Word (Word32, Word64)
  import Haskoin (btc)
  import Haskoin.Crypto
  import Haskoin.Util
  import Haskoin.Util.Arbitrary
  import Test.HUnit
  import Test.Hspec
  import Test.QuickCheck hiding ((.&.))
  
  spec :: Spec
  spec =
    describe "mnemonic" $ do
      it "entropy to mnemonic sentence" toMnemonicTest
      it "mnemonic sentence to entropy" fromMnemonicTest
      it "mnemonic sentence to seed" mnemonicToSeedTest
      it "mnemonic sentence with invalid checksum" fromMnemonicInvalidTest
      it "empty mnemonic sentence is invalid" $ sequence_ [emptyMnemonicTest]
      it "generate 12 words" $ property toMnemonic128
      it "generate 18 words" $ property toMnemonic160
      it "generate 24 words" $ property toMnemonic256
      it "generate 48 words" $ property toMnemonic512
      it "generate any number of words" $ property toMnemonicVar
      it "encode and decode 128-bit entropy" $ property fromToMnemonic128
      it "encode and decode 160-bit entropy" $ property fromToMnemonic160
      it "encode and decode 256-bit entropy" $ property fromToMnemonic256
      it "encode and decode 512-bit entropy" $ property fromToMnemonic512
      it "encode and decode n-bit entropy" $ property fromToMnemonicVar
      it "convert 128-bit mnemonic to seed" $ property mnemonicToSeed128
      it "convert 160-bit mnemonic to seed" $ property mnemonicToSeed160
      it "convert 256-bit mnemonic to seed" $ property mnemonicToSeed256
      it "convert 512-bit mnemonic to seed" $ property mnemonicToSeed512
      it "convert n-bit mnemonic to seed" $ property mnemonicToSeedVar
      it "get bits" $ property getBitsByteCount
      it "get end bits" $ property getBitsEndBits
      it "passes the Trezor vectors" trezorVectorTests
  
  toMnemonicTest :: Assertion
  toMnemonicTest = zipWithM_ f ents mss
    where
      f e m = assertEqual "" m . h $ e
      h =
        fromRight (error "Could not decode mnemonic sentence")
          . toMnemonic
          . fromJust
          . decodeHex
  
  fromMnemonicTest :: Assertion
  fromMnemonicTest = zipWithM_ f ents mss
    where
      f e = assertEqual "" e . h
      h =
        encodeHex
          . fromRight (error "Could not decode mnemonic sentence")
          . fromMnemonic
  
  mnemonicToSeedTest :: Assertion
  mnemonicToSeedTest = zipWithM_ f mss seeds
    where
      f m s = assertEqual "" s . h $ m
      h =
        encodeHex
          . fromRight (error "Could not decode mnemonic seed")
          . mnemonicToSeed "TREZOR"
  
  fromMnemonicInvalidTest :: Assertion
  fromMnemonicInvalidTest = mapM_ f invalidMss
    where
      f = assertBool "" . h
      h m = case fromMnemonic m of
        Right _ -> False
        Left err -> "fromMnemonic: checksum failed:" `isPrefixOf` err
  
  emptyMnemonicTest :: Assertion
  emptyMnemonicTest =
    assertBool "" $
      case fromMnemonic "" of
        Right _ -> False
        Left err -> "fromMnemonic: empty mnemonic" `isPrefixOf` err
  
  trezorVectorTests :: Assertion
  trezorVectorTests =
    forM_ trezorVectors $ \(entTxt, mnem, seedTxt, xprvTxt) -> do
      let ent = fromJust $ decodeHex entTxt
          seed = fromJust $ decodeHex seedTxt
          xprv = fromJust $ xPrvImport btc xprvTxt
      assertEqual "toMnemonic" (Right mnem) $ toMnemonic ent
      assertEqual "mnemonicToSeed" (Right seed) $ mnemonicToSeed "TREZOR" mnem
      assertEqual "xPrv" xprv $ makeXPrvKey seed
  
  ents :: [Text]
  ents =
    [ "00000000000000000000000000000000",
      "7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f",
      "80808080808080808080808080808080",
      "ffffffffffffffffffffffffffffffff",
      "000000000000000000000000000000000000000000000000",
      "7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f",
      "808080808080808080808080808080808080808080808080",
      "ffffffffffffffffffffffffffffffffffffffffffffffff",
      "0000000000000000000000000000000000000000000000000000000000000000",
      "7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f",
      "8080808080808080808080808080808080808080808080808080808080808080",
      "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
      "77c2b00716cec7213839159e404db50d",
      "b63a9c59a6e641f288ebc103017f1da9f8290b3da6bdef7b",
      "3e141609b97933b66a060dcddc71fad1d91677db872031e85f4c015c5e7e8982",
      "0460ef47585604c5660618db2e6a7e7f",
      "72f60ebac5dd8add8d2a25a797102c3ce21bc029c200076f",
      "2c85efc7f24ee4573d2b81a6ec66cee209b2dcbd09d8eddc51e0215b0b68e416",
      "eaebabb2383351fd31d703840b32e9e2",
      "7ac45cfe7722ee6c7ba84fbc2d5bd61b45cb2fe5eb65aa78",
      "4fa1a8bc3e6d80ee1316050e862c1812031493212b7ec3f3bb1b08f168cabeef",
      "18ab19a9f54a9274f03e5209a2ac8a91",
      "18a2e1d81b8ecfb2a333adcb0c17a5b9eb76cc5d05db91a4",
      "15da872c95a13dd738fbf50e427583ad61f18fd99f628c417a61cf8343c90419"
    ]
  
  mss :: [Mnemonic]
  mss =
    [ "abandon abandon abandon abandon abandon abandon abandon abandon abandon\
      \ abandon abandon about",
      "legal winner thank year wave sausage worth useful legal winner thank\
      \ yellow",
      "letter advice cage absurd amount doctor acoustic avoid letter advice\
      \ cage above",
      "zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo wrong",
      "abandon abandon abandon abandon abandon abandon abandon abandon abandon\
      \ abandon abandon abandon abandon abandon abandon abandon abandon agent",
      "legal winner thank year wave sausage worth useful legal winner thank\
      \ year wave sausage worth useful legal will",
      "letter advice cage absurd amount doctor acoustic avoid letter advice\
      \ cage absurd amount doctor acoustic avoid letter always",
      "zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo\
      \ when",
      "abandon abandon abandon abandon abandon abandon abandon abandon abandon\
      \ abandon abandon abandon abandon abandon abandon abandon abandon abandon\
      \ abandon abandon abandon abandon abandon art",
      "legal winner thank year wave sausage worth useful legal winner thank\
      \ year wave sausage worth useful legal winner thank year wave sausage\
      \ worth title",
      "letter advice cage absurd amount doctor acoustic avoid letter advice\
      \ cage absurd amount doctor acoustic avoid letter advice cage absurd\
      \ amount doctor acoustic bless",
      "zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo\
      \ zoo zoo zoo zoo zoo vote",
      "jelly better achieve collect unaware mountain thought cargo oxygen act\
      \ hood bridge",
      "renew stay biology evidence goat welcome casual join adapt armor shuffle\
      \ fault little machine walk stumble urge swap",
      "dignity pass list indicate nasty swamp pool script soccer toe leaf photo\
      \ multiply desk host tomato cradle drill spread actor shine dismiss\
      \ champion exotic",
      "afford alter spike radar gate glance object seek swamp infant panel\
      \ yellow",
      "indicate race push merry suffer human cruise dwarf pole review arch keep\
      \ canvas theme poem divorce alter left",
      "clutch control vehicle tonight unusual clog visa ice plunge glimpse\
      \ recipe series open hour vintage deposit universe tip job dress radar\
      \ refuse motion taste",
      "turtle front uncle idea crush write shrug there lottery flower risk\
      \ shell",
      "kiss carry display unusual confirm curtain upgrade antique rotate hello\
      \ void custom frequent obey nut hole price segment",
      "exile ask congress lamp submit jacket era scheme attend cousin alcohol\
      \ catch course end lucky hurt sentence oven short ball bird grab wing top",
      "board flee heavy tunnel powder denial science ski answer betray cargo\
      \ cat",
      "board blade invite damage undo sun mimic interest slam gaze truly\
      \ inherit resist great inject rocket museum chief",
      "beyond stage sleep clip because twist token leaf atom beauty genius food\
      \ business side grid unable middle armed observe pair crouch tonight away\
      \ coconut"
    ]
  
  seeds :: [Text]
  seeds =
    [ "c55257c360c07c72029aebc1b53c05ed0362ada38ead3e3e9efa3708e53495531f09a69\
      \87599d18264c1e1c92f2cf141630c7a3c4ab7c81b2f001698e7463b04",
      "2e8905819b8723fe2c1d161860e5ee1830318dbf49a83bd451cfb8440c28bd6fa457fe1\
      \296106559a3c80937a1c1069be3a3a5bd381ee6260e8d9739fce1f607",
      "d71de856f81a8acc65e6fc851a38d4d7ec216fd0796d0a6827a3ad6ed5511a30fa280f1\
      \2eb2e47ed2ac03b5c462a0358d18d69fe4f985ec81778c1b370b652a8",
      "ac27495480225222079d7be181583751e86f571027b0497b5b5d11218e0a8a133325729\
      \17f0f8e5a589620c6f15b11c61dee327651a14c34e18231052e48c069",
      "035895f2f481b1b0f01fcf8c289c794660b289981a78f8106447707fdd9666ca06da5a9\
      \a565181599b79f53b844d8a71dd9f439c52a3d7b3e8a79c906ac845fa",
      "f2b94508732bcbacbcc020faefecfc89feafa6649a5491b8c952cede496c214a0c7b3c3\
      \92d168748f2d4a612bada0753b52a1c7ac53c1e93abd5c6320b9e95dd",
      "107d7c02a5aa6f38c58083ff74f04c607c2d2c0ecc55501dadd72d025b751bc27fe913f\
      \fb796f841c49b1d33b610cf0e91d3aa239027f5e99fe4ce9e5088cd65",
      "0cd6e5d827bb62eb8fc1e262254223817fd068a74b5b449cc2f667c3f1f985a76379b43\
      \348d952e2265b4cd129090758b3e3c2c49103b5051aac2eaeb890a528",
      "bda85446c68413707090a52022edd26a1c9462295029f2e60cd7c4f2bbd3097170af7a4\
      \d73245cafa9c3cca8d561a7c3de6f5d4a10be8ed2a5e608d68f92fcc8",
      "bc09fca1804f7e69da93c2f2028eb238c227f2e9dda30cd63699232578480a4021b146a\
      \d717fbb7e451ce9eb835f43620bf5c514db0f8add49f5d121449d3e87",
      "c0c519bd0e91a2ed54357d9d1ebef6f5af218a153624cf4f2da911a0ed8f7a09e2ef61a\
      \f0aca007096df430022f7a2b6fb91661a9589097069720d015e4e982f",
      "dd48c104698c30cfe2b6142103248622fb7bb0ff692eebb00089b32d22484e1613912f0\
      \a5b694407be899ffd31ed3992c456cdf60f5d4564b8ba3f05a69890ad",
      "b5b6d0127db1a9d2226af0c3346031d77af31e918dba64287a1b44b8ebf63cdd52676f6\
      \72a290aae502472cf2d602c051f3e6f18055e84e4c43897fc4e51a6ff",
      "9248d83e06f4cd98debf5b6f010542760df925ce46cf38a1bdb4e4de7d21f5c39366941\
      \c69e1bdbf2966e0f6e6dbece898a0e2f0a4c2b3e640953dfe8b7bbdc5",
      "ff7f3184df8696d8bef94b6c03114dbee0ef89ff938712301d27ed8336ca89ef9635da2\
      \0af07d4175f2bf5f3de130f39c9d9e8dd0472489c19b1a020a940da67",
      "65f93a9f36b6c85cbe634ffc1f99f2b82cbb10b31edc7f087b4f6cb9e976e9faf76ff41\
      \f8f27c99afdf38f7a303ba1136ee48a4c1e7fcd3dba7aa876113a36e4",
      "3bbf9daa0dfad8229786ace5ddb4e00fa98a044ae4c4975ffd5e094dba9e0bb289349db\
      \e2091761f30f382d4e35c4a670ee8ab50758d2c55881be69e327117ba",
      "fe908f96f46668b2d5b37d82f558c77ed0d69dd0e7e043a5b0511c48c2f1064694a956f\
      \86360c93dd04052a8899497ce9e985ebe0c8c52b955e6ae86d4ff4449",
      "bdfb76a0759f301b0b899a1e3985227e53b3f51e67e3f2a65363caedf3e32fde42a66c4\
      \04f18d7b05818c95ef3ca1e5146646856c461c073169467511680876c",
      "ed56ff6c833c07982eb7119a8f48fd363c4a9b1601cd2de736b01045c5eb8ab4f57b079\
      \403485d1c4924f0790dc10a971763337cb9f9c62226f64fff26397c79",
      "095ee6f817b4c2cb30a5a797360a81a40ab0f9a4e25ecd672a3f58a0b5ba0687c096a6b\
      \14d2c0deb3bdefce4f61d01ae07417d502429352e27695163f7447a8c",
      "6eff1bb21562918509c73cb990260db07c0ce34ff0e3cc4a8cb3276129fbcb300bddfe0\
      \05831350efd633909f476c45c88253276d9fd0df6ef48609e8bb7dca8",
      "f84521c777a13b61564234bf8f8b62b3afce27fc4062b51bb5e62bdfecb23864ee6ecf0\
      \7c1d5a97c0834307c5c852d8ceb88e7c97923c0a3b496bedd4e5f88a9",
      "b15509eaa2d09d3efd3e006ef42151b30367dc6e3aa5e44caba3fe4d3e352e65101fbdb\
      \86a96776b91946ff06f8eac594dc6ee1d3e82a42dfe1b40fef6bcc3fd"
    ]
  
  invalidMss :: [Mnemonic]
  invalidMss =
    [ "abandon abandon abandon abandon abandon abandon abandon abandon abandon\
      \ abandon abandon abandon",
      "legal winner thank year wave sausage worth useful legal winner thank\
      \ thank",
      "letter advice cage absurd amount doctor acoustic avoid letter advice\
      \ cage sausage",
      "zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo",
      "abandon abandon abandon abandon abandon abandon abandon abandon abandon\
      \ abandon abandon abandon abandon abandon abandon abandon abandon abandon",
      "legal winner thank year wave sausage worth useful legal winner thank\
      \ year wave sausage worth useful legal letter",
      "letter advice cage absurd amount doctor acoustic avoid letter advice\
      \ cage absurd amount doctor acoustic avoid letter abandon",
      "zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo\
      \ zoo",
      "abandon abandon abandon abandon abandon abandon abandon abandon abandon\
      \ abandon abandon abandon abandon abandon abandon abandon abandon abandon\
      \ abandon abandon abandon abandon abandon abandon",
      "legal winner thank year wave sausage worth useful legal winner thank\
      \ year wave sausage worth useful legal winner thank year wave sausage\
      \ worth letter",
      "letter advice cage absurd amount doctor acoustic avoid letter advice\
      \ cage absurd amount doctor acoustic avoid letter advice cage absurd\
      \ amount doctor acoustic letter",
      "zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo\
      \ zoo zoo zoo zoo zoo zoo",
      "jelly better achieve collect unaware mountain thought cargo oxygen act\
      \ hood zoo",
      "renew stay biology evidence goat welcome casual join adapt armor shuffle\
      \ fault little machine walk stumble urge zoo",
      "dignity pass list indicate nasty swamp pool script soccer toe leaf photo\
      \ multiply desk host tomato cradle drill spread actor shine dismiss\
      \ champion zoo",
      "afford alter spike radar gate glance object seek swamp infant panel\
      \ zoo",
      "indicate race push merry suffer human cruise dwarf pole review arch keep\
      \ canvas theme poem divorce alter zoo",
      "clutch control vehicle tonight unusual clog visa ice plunge glimpse\
      \ recipe series open hour vintage deposit universe tip job dress radar\
      \ refuse motion zoo",
      "turtle front uncle idea crush write shrug there lottery flower risk\
      \ zoo",
      "kiss carry display unusual confirm curtain upgrade antique rotate hello\
      \ void custom frequent obey nut hole price zoo",
      "exile ask congress lamp submit jacket era scheme attend cousin alcohol\
      \ catch course end lucky hurt sentence oven short ball bird grab wing zoo",
      "board flee heavy tunnel powder denial science ski answer betray cargo\
      \ zoo",
      "board blade invite damage undo sun mimic interest slam gaze truly\
      \ inherit resist great inject rocket museum zoo",
      "beyond stage sleep clip because twist token leaf atom beauty genius food\
      \ business side grid unable middle armed observe pair crouch tonight away\
      \ zoo"
    ]
  
  -- Vectors from https://github.com/trezor/python-mnemonic/blob/master/vectors.json
  trezorVectors :: [(Text, Mnemonic, Text, Text)]
  trezorVectors =
    [ ( "00000000000000000000000000000000",
        "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about",
        "c55257c360c07c72029aebc1b53c05ed0362ada38ead3e3e9efa3708e53495531f09a6987599d18264c1e1c92f2cf141630c7a3c4ab7c81b2f001698e7463b04",
        "xprv9s21ZrQH143K3h3fDYiay8mocZ3afhfULfb5GX8kCBdno77K4HiA15Tg23wpbeF1pLfs1c5SPmYHrEpTuuRhxMwvKDwqdKiGJS9XFKzUsAF"
      ),
      ( "7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f",
        "legal winner thank year wave sausage worth useful legal winner thank yellow",
        "2e8905819b8723fe2c1d161860e5ee1830318dbf49a83bd451cfb8440c28bd6fa457fe1296106559a3c80937a1c1069be3a3a5bd381ee6260e8d9739fce1f607",
        "xprv9s21ZrQH143K2gA81bYFHqU68xz1cX2APaSq5tt6MFSLeXnCKV1RVUJt9FWNTbrrryem4ZckN8k4Ls1H6nwdvDTvnV7zEXs2HgPezuVccsq"
      ),
      ( "80808080808080808080808080808080",
        "letter advice cage absurd amount doctor acoustic avoid letter advice cage above",
        "d71de856f81a8acc65e6fc851a38d4d7ec216fd0796d0a6827a3ad6ed5511a30fa280f12eb2e47ed2ac03b5c462a0358d18d69fe4f985ec81778c1b370b652a8",
        "xprv9s21ZrQH143K2shfP28KM3nr5Ap1SXjz8gc2rAqqMEynmjt6o1qboCDpxckqXavCwdnYds6yBHZGKHv7ef2eTXy461PXUjBFQg6PrwY4Gzq"
      ),
      ( "ffffffffffffffffffffffffffffffff",
        "zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo wrong",
        "ac27495480225222079d7be181583751e86f571027b0497b5b5d11218e0a8a13332572917f0f8e5a589620c6f15b11c61dee327651a14c34e18231052e48c069",
        "xprv9s21ZrQH143K2V4oox4M8Zmhi2Fjx5XK4Lf7GKRvPSgydU3mjZuKGCTg7UPiBUD7ydVPvSLtg9hjp7MQTYsW67rZHAXeccqYqrsx8LcXnyd"
      ),
      ( "000000000000000000000000000000000000000000000000",
        "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon agent",
        "035895f2f481b1b0f01fcf8c289c794660b289981a78f8106447707fdd9666ca06da5a9a565181599b79f53b844d8a71dd9f439c52a3d7b3e8a79c906ac845fa",
        "xprv9s21ZrQH143K3mEDrypcZ2usWqFgzKB6jBBx9B6GfC7fu26X6hPRzVjzkqkPvDqp6g5eypdk6cyhGnBngbjeHTe4LsuLG1cCmKJka5SMkmU"
      ),
      ( "7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f",
        "legal winner thank year wave sausage worth useful legal winner thank year wave sausage worth useful legal will",
        "f2b94508732bcbacbcc020faefecfc89feafa6649a5491b8c952cede496c214a0c7b3c392d168748f2d4a612bada0753b52a1c7ac53c1e93abd5c6320b9e95dd",
        "xprv9s21ZrQH143K3Lv9MZLj16np5GzLe7tDKQfVusBni7toqJGcnKRtHSxUwbKUyUWiwpK55g1DUSsw76TF1T93VT4gz4wt5RM23pkaQLnvBh7"
      ),
      ( "808080808080808080808080808080808080808080808080",
        "letter advice cage absurd amount doctor acoustic avoid letter advice cage absurd amount doctor acoustic avoid letter always",
        "107d7c02a5aa6f38c58083ff74f04c607c2d2c0ecc55501dadd72d025b751bc27fe913ffb796f841c49b1d33b610cf0e91d3aa239027f5e99fe4ce9e5088cd65",
        "xprv9s21ZrQH143K3VPCbxbUtpkh9pRG371UCLDz3BjceqP1jz7XZsQ5EnNkYAEkfeZp62cDNj13ZTEVG1TEro9sZ9grfRmcYWLBhCocViKEJae"
      ),
      ( "ffffffffffffffffffffffffffffffffffffffffffffffff",
        "zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo when",
        "0cd6e5d827bb62eb8fc1e262254223817fd068a74b5b449cc2f667c3f1f985a76379b43348d952e2265b4cd129090758b3e3c2c49103b5051aac2eaeb890a528",
        "xprv9s21ZrQH143K36Ao5jHRVhFGDbLP6FCx8BEEmpru77ef3bmA928BxsqvVM27WnvvyfWywiFN8K6yToqMaGYfzS6Db1EHAXT5TuyCLBXUfdm"
      ),
      ( "0000000000000000000000000000000000000000000000000000000000000000",
        "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon art",
        "bda85446c68413707090a52022edd26a1c9462295029f2e60cd7c4f2bbd3097170af7a4d73245cafa9c3cca8d561a7c3de6f5d4a10be8ed2a5e608d68f92fcc8",
        "xprv9s21ZrQH143K32qBagUJAMU2LsHg3ka7jqMcV98Y7gVeVyNStwYS3U7yVVoDZ4btbRNf4h6ibWpY22iRmXq35qgLs79f312g2kj5539ebPM"
      ),
      ( "7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f",
        "legal winner thank year wave sausage worth useful legal winner thank year wave sausage worth useful legal winner thank year wave sausage worth title",
        "bc09fca1804f7e69da93c2f2028eb238c227f2e9dda30cd63699232578480a4021b146ad717fbb7e451ce9eb835f43620bf5c514db0f8add49f5d121449d3e87",
        "xprv9s21ZrQH143K3Y1sd2XVu9wtqxJRvybCfAetjUrMMco6r3v9qZTBeXiBZkS8JxWbcGJZyio8TrZtm6pkbzG8SYt1sxwNLh3Wx7to5pgiVFU"
      ),
      ( "8080808080808080808080808080808080808080808080808080808080808080",
        "letter advice cage absurd amount doctor acoustic avoid letter advice cage absurd amount doctor acoustic avoid letter advice cage absurd amount doctor acoustic bless",
        "c0c519bd0e91a2ed54357d9d1ebef6f5af218a153624cf4f2da911a0ed8f7a09e2ef61af0aca007096df430022f7a2b6fb91661a9589097069720d015e4e982f",
        "xprv9s21ZrQH143K3CSnQNYC3MqAAqHwxeTLhDbhF43A4ss4ciWNmCY9zQGvAKUSqVUf2vPHBTSE1rB2pg4avopqSiLVzXEU8KziNnVPauTqLRo"
      ),
      ( "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
        "zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo zoo vote",
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    ]
  
  binWordsToBS :: (Serialize a) => [a] -> BS.ByteString
  binWordsToBS = foldr f BS.empty
    where
      f b a = a `BS.append` encode b
  
  {- Encode mnemonic -}
  
  toMnemonic128 :: (Word64, Word64) -> Bool
  toMnemonic128 (a, b) = l == 12
    where
      bs = encode a `BS.append` encode b
      l =
        length
          . T.words
          . fromRight (error "Could not decode mnemonic senttence")
          $ toMnemonic bs
  
  toMnemonic160 :: (Word32, Word64, Word64) -> Bool
  toMnemonic160 (a, b, c) = l == 15
    where
      bs = BS.concat [encode a, encode b, encode c]
      l =
        length
          . T.words
          . fromRight (error "Could not decode mnemonic sentence")
          $ toMnemonic bs
  
  toMnemonic256 :: (Word64, Word64, Word64, Word64) -> Bool
  toMnemonic256 (a, b, c, d) = l == 24
    where
      bs = BS.concat [encode a, encode b, encode c, encode d]
      l =
        length
          . T.words
          . fromRight (error "Could not decode mnemonic sentence")
          $ toMnemonic bs
  
  toMnemonic512 ::
    ((Word64, Word64, Word64, Word64), (Word64, Word64, Word64, Word64)) -> Bool
  toMnemonic512 ((a, b, c, d), (e, f, g, h)) = l == 48
    where
      bs =
        BS.concat
          [ encode a,
            encode b,
            encode c,
            encode d,
            encode e,
            encode f,
            encode g,
            encode h
          ]
      l =
        length
          . T.words
          . fromRight (error "Could not decode mnemonic sentence")
          $ toMnemonic bs
  
  toMnemonicVar :: [Word32] -> Property
  toMnemonicVar ls = not (null ls) && length ls <= 8 ==> l == wc
    where
      bs = binWordsToBS ls
      bl = BS.length bs
      cb = bl `div` 4
      wc = (cb + bl * 8) `div` 11
      l =
        length
          . T.words
          . fromRight (error "Could not decode mnemonic sentence")
          $ toMnemonic bs
  
  {- Encode/Decode -}
  
  fromToMnemonic128 :: (Word64, Word64) -> Bool
  fromToMnemonic128 (a, b) = bs == bs'
    where
      bs = encode a `BS.append` encode b
      bs' =
        fromRight
          (error "Could not decode mnemonic entropy")
          (fromMnemonic =<< toMnemonic bs)
  
  fromToMnemonic160 :: (Word32, Word64, Word64) -> Bool
  fromToMnemonic160 (a, b, c) = bs == bs'
    where
      bs = BS.concat [encode a, encode b, encode c]
      bs' =
        fromRight
          (error "Could not decode mnemonic entropy")
          (fromMnemonic =<< toMnemonic bs)
  
  fromToMnemonic256 :: (Word64, Word64, Word64, Word64) -> Bool
  fromToMnemonic256 (a, b, c, d) = bs == bs'
    where
      bs = BS.concat [encode a, encode b, encode c, encode d]
      bs' =
        fromRight
          (error "Could not decode mnemonic entropy")
          (fromMnemonic =<< toMnemonic bs)
  
  fromToMnemonic512 ::
    ((Word64, Word64, Word64, Word64), (Word64, Word64, Word64, Word64)) -> Bool
  fromToMnemonic512 ((a, b, c, d), (e, f, g, h)) = bs == bs'
    where
      bs =
        BS.concat
          [ encode a,
            encode b,
            encode c,
            encode d,
            encode e,
            encode f,
            encode g,
            encode h
          ]
      bs' =
        fromRight
          (error "Could not decode mnemonic entropy")
          (fromMnemonic =<< toMnemonic bs)
  
  fromToMnemonicVar :: [Word32] -> Property
  fromToMnemonicVar ls = not (null ls) && length ls <= 8 ==> bs == bs'
    where
      bs = binWordsToBS ls
      bs' =
        fromRight
          (error "Could not decode mnemonic entropy")
          (fromMnemonic =<< toMnemonic bs)
  
  {- Mnemonic to seed -}
  
  mnemonicToSeed128 :: (Word64, Word64) -> Bool
  mnemonicToSeed128 (a, b) = l == 64
    where
      bs = encode a `BS.append` encode b
      seed =
        fromRight
          (error "Could not decode mnemonic seed")
          (mnemonicToSeed "" =<< toMnemonic bs)
      l = BS.length seed
  
  mnemonicToSeed160 :: (Word32, Word64, Word64) -> Bool
  mnemonicToSeed160 (a, b, c) = l == 64
    where
      bs = BS.concat [encode a, encode b, encode c]
      seed =
        fromRight
          (error "Could not decode mnemonic seed")
          (mnemonicToSeed "" =<< toMnemonic bs)
      l = BS.length seed
  
  mnemonicToSeed256 :: (Word64, Word64, Word64, Word64) -> Bool
  mnemonicToSeed256 (a, b, c, d) = l == 64
    where
      bs = BS.concat [encode a, encode b, encode c, encode d]
      seed =
        fromRight
          (error "Could not decode mnemonic seed")
          (mnemonicToSeed "" =<< toMnemonic bs)
      l = BS.length seed
  
  mnemonicToSeed512 ::
    ((Word64, Word64, Word64, Word64), (Word64, Word64, Word64, Word64)) -> Bool
  mnemonicToSeed512 ((a, b, c, d), (e, f, g, h)) = l == 64
    where
      bs =
        BS.concat
          [ encode a,
            encode b,
            encode c,
            encode d,
            encode e,
            encode f,
            encode g,
            encode h
          ]
      seed =
        fromRight
          (error "Could not decode mnemonic seed")
          (mnemonicToSeed "" =<< toMnemonic bs)
      l = BS.length seed
  
  mnemonicToSeedVar :: [Word32] -> Property
  mnemonicToSeedVar ls = not (null ls) && length ls <= 16 ==> l == 64
    where
      bs = binWordsToBS ls
      seed =
        fromRight
          (error "Could not decode mnemonic seed")
          (mnemonicToSeed "" =<< toMnemonic bs)
      l = BS.length seed
  
  {- Get bits from ByteString -}
  
  data ByteCountGen = ByteCountGen BS.ByteString Int deriving (Show)
  
  instance Arbitrary ByteCountGen where
    arbitrary = do
      bs <- arbitraryBS
      i <- choose (0, BS.length bs * 8)
      return $ ByteCountGen bs i
  
  getBitsByteCount :: ByteCountGen -> Bool
  getBitsByteCount (ByteCountGen bs i) = BS.length bits == l
    where
      (q, r) = i `quotRem` 8
      bits = getBits i bs
      l = if r == 0 then q else q + 1
  
  getBitsEndBits :: ByteCountGen -> Bool
  getBitsEndBits (ByteCountGen bs i) =
    (r == 0) || (BS.last bits .&. (0xff `shiftR` r) == 0x00)
    where
      r = i `mod` 8
      bits = getBits i bs
  