librustzcash-wrapper/src/lib.rs

@@ -26,7 +26,6 @@ use zip32;
 use zcash_primitives::{
     zip32::{
         Scope as SaplingScope,
-        ChildIndex,
         sapling_find_address,
         sapling::DiversifierKey
     },
@@ -629,20 +628,21 @@ pub extern "C" fn rust_wrapper_recover_seed(
 pub extern "C" fn rust_wrapper_sapling_spendingkey(
     iseed: *const u8,
     iseed_len: usize,
-    ix: u32,
     out: *mut u8,
     out_len: &mut usize
     ){
     let seed: Vec<u8> = marshall_from_haskell_var(iseed, iseed_len, RW);
+    if  ( seed.len() != 64 ) {
+        // invalid seed length 
+        marshall_to_haskell_var(&vec![0], out, out_len, RW);
+    } else {
+        // Obtain the ExtendedSpendingKey using the seed
+        // Returns a byte array (169 bytes)
         let su8 = &seed;
         let seedu8 : &[u8] = &su8;
         let extsk: ExtendedSpendingKey = ExtendedSpendingKey::master(&seedu8); 
-    if ix == 0 {
         let extsk_bytes = extsk.to_bytes().to_vec(); 
         marshall_to_haskell_var(&extsk_bytes, out, out_len, RW);
-    } else {
-        let child_sk = extsk.derive_child(ChildIndex::from_index(ix));
-        marshall_to_haskell_var(&child_sk.to_bytes().to_vec(), out, out_len, RW);
     }
 }
 

src/C/Zcash.chs

@@ -136,7 +136,6 @@ import ZcashHaskell.Types
 
 {# fun unsafe rust_wrapper_sapling_spendingkey as rustWrapperSaplingSpendingkey
      { toBorshVar* `BS.ByteString'&
-     , `Word32'
      , getVarBuffer `Buffer (BS.ByteString)'&
      }
   -> `()'

src/ZcashHaskell/Sapling.hs

@@ -95,15 +95,13 @@ instance FromJSON RawTxResponse where
           pure $ RawTxResponse i h (getShieldedOutputs h) a ht c b
 
 -- | Attempts to obtain a sapling SpendingKey using a HDSeed
-genSaplingSpendingKey :: Seed -> Int -> Maybe SaplingSpendingKey
-genSaplingSpendingKey seed i = do
-  if BS.length res == 169
+genSaplingSpendingKey :: Seed -> Maybe SaplingSpendingKey
+genSaplingSpendingKey seed = do
+  if BS.length res == 196
     then Just res
     else Nothing
   where
-    res =
-      withPureBorshVarBuffer
-        (rustWrapperSaplingSpendingkey seed (fromIntegral i))
+    res = withPureBorshVarBuffer (rustWrapperSaplingSpendingkey seed)
 
 -- | Attempts to generate a sapling Payment Address using an ExtendedSpendingKey and a Diversifier Index 
 genSaplingPaymentAddress :: SaplingSpendingKey -> Int -> Maybe SaplingReceiver

test/Spec.hs

@@ -20,7 +20,6 @@
 {-# LANGUAGE TypeSynonymInstances #-}
 
 import C.Zcash (rustWrapperUADecode)
-import Control.Exception (throwIO)
 import Control.Monad.IO.Class (liftIO)
 import Data.Aeson
 import Data.Bool (Bool(True))
@@ -62,7 +61,6 @@ import ZcashHaskell.Types
   , Phrase(..)
   , RawData(..)
   , RawTxResponse(..)
-  , Seed(..)
   , ShieldedOutput(..)
   , UnifiedAddress(..)
   , UnifiedFullViewingKey(..)
@@ -468,18 +466,12 @@ main = do
           msg `shouldBe`
             "Hello World!\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL\NUL"
     describe "Wallet seed phrase" $ do
-      prop "Generated phrases are valid" $ again prop_PhraseLength
-      prop "Derived seeds are valid" $ again prop_SeedLength
-    before getSeed $
-      describe "Optimized spending key tests" $ do
-        it "Sapling spending keys are valid" $ \s ->
-          property $ prop_SaplingSpendingKey s
-        it "Sapling receivers are valid" $ \s ->
-          property $ prop_SaplingReceiver s
-        it "Orchard spending keys are valid" $ \s ->
-          property $ prop_OrchardSpendingKey s
-        it "Orchard receivers are valid" $ \s ->
-          property $ prop_OrchardReceiver s
+      prop "Generated phrases are valid" prop_PhraseLength
+      prop "Derived seeds are valid" prop_SeedLength
+      prop "Orchard spending keys are valid" $
+        forAll genOrcArgs $ \(c, i, _) -> prop_OrchardSpendingKey c i
+      prop "Orchard receivers are valid" $
+        forAll genOrcArgs $ \(c, i, j) -> prop_OrchardReceiver c i j
     describe "Address tests" $ do
       it "Encode transparent" $ do
         let ua =
@@ -489,7 +481,7 @@ main = do
                 Nothing -> "Bad UA"
                 Just u -> maybe "No transparent" encodeTransparent $ t_rec u
         msg `shouldBe` "t1LPWuQnjCRH7JAeEErSXKixcUteLJRJjKD"
-    describe "Transparent Private and Public Key Generation" $ do
+    describe "Transparent Private and Publicc Key Generation" $ do
       it "Obtain a transparent extended private key from HDSeed" $ do
         let hdseed =
               [ 206
@@ -585,38 +577,55 @@ main = do
         xtpubk <- xtpubkIO
           ---print $ show xtpubk
         xtpubk `shouldBe` testpbk
+    describe "Sapling SpendingKey test" $ do
+      it "Generate Sapling spending key" $ do
+        p <- generateWalletSeedPhrase
+        let s = getWalletSeed p
+        genSaplingSpendingKey <$> s `shouldNotBe` Nothing
+    describe "Sapling Payment Address generation test" $ do
+      it "Call genSaplingPaymentAddress" $ do
+        p <- generateWalletSeedPhrase
+        let s = getWalletSeed p
+        genSaplingPaymentAddress (fromMaybe "" s) 0 `shouldNotBe` Nothing
+      prop "Sapling receivers are valid" $
+        forAll genSapArgs $ \i -> prop_SaplingReceiver i
 
 -- | Properties
-prop_PhraseLength :: Property
-prop_PhraseLength =
+prop_PhraseLength :: Int -> Property
+prop_PhraseLength i =
   ioProperty $ do
     p <- generateWalletSeedPhrase
     return $ BS.length p >= 95
 
-prop_SeedLength :: Property
-prop_SeedLength =
+prop_SeedLength :: Int -> Property
+prop_SeedLength i =
   ioProperty $ do
     p <- generateWalletSeedPhrase
     let s = getWalletSeed p
     return $ maybe 0 BS.length s === 64
 
-prop_OrchardSpendingKey :: Seed -> CoinType -> NonNegative Int -> Property
-prop_OrchardSpendingKey s c (NonNegative i) =
-  genOrchardSpendingKey s c i =/= Nothing
+prop_OrchardSpendingKey :: CoinType -> Int -> Property
+prop_OrchardSpendingKey c i =
+  ioProperty $ do
+    p <- generateWalletSeedPhrase
+    let s = getWalletSeed p
+    return $ genOrchardSpendingKey (fromMaybe "" s) c i =/= Nothing
 
-prop_OrchardReceiver ::
-     Seed -> CoinType -> NonNegative Int -> NonNegative Int -> Property
-prop_OrchardReceiver s c (NonNegative i) (NonNegative j) =
-  genOrchardReceiver j (fromMaybe "" $ genOrchardSpendingKey s c i) =/= Nothing
+prop_OrchardReceiver :: CoinType -> Int -> Int -> Property
+prop_OrchardReceiver c i j =
+  ioProperty $ do
+    p <- generateWalletSeedPhrase
+    let s = getWalletSeed p
+    let sk = genOrchardSpendingKey (fromMaybe "" s) c i
+    return $ genOrchardReceiver j (fromMaybe "" sk) =/= Nothing
 
-prop_SaplingSpendingKey :: Seed -> NonNegative Int -> Property
-prop_SaplingSpendingKey s (NonNegative i) =
-  genSaplingSpendingKey s i =/= Nothing
-
-prop_SaplingReceiver :: Seed -> NonNegative Int -> NonNegative Int -> Property
-prop_SaplingReceiver s (NonNegative i) (NonNegative j) =
-  genSaplingPaymentAddress (fromMaybe "" $ genSaplingSpendingKey s j) i =/=
-  Nothing
+prop_SaplingReceiver :: Int -> Property
+prop_SaplingReceiver i =
+  ioProperty $ do
+    p <- generateWalletSeedPhrase
+    let s = getWalletSeed p
+    let sk = genSaplingSpendingKey (fromMaybe "" s)
+    return $ genSaplingPaymentAddress (fromMaybe "" sk) i =/= Nothing
 
 -- | Generators
 genOrcArgs :: Gen (CoinType, Int, Int)
@@ -628,15 +637,4 @@ genOrcArgs = do
 
 genSapArgs :: Gen Int
 genSapArgs = choose (1, 50)
-
-getSeed :: IO Seed
-getSeed = do
-  p <- generateWalletSeedPhrase
-  let s = getWalletSeed p
-  case s of
-    Nothing -> throwIO $ userError "Couldn't generate seed"
-    Just s' -> return s'
-
 -- | Arbitrary instances
-instance Arbitrary CoinType where
-  arbitrary = elements [MainNetCoin, TestNetCoin, RegTestNetCoin]

zcash-haskell.cabal

@@ -5,7 +5,7 @@ cabal-version: 3.0
 -- see: https://github.com/sol/hpack
 
 name:           zcash-haskell
-version:        0.4.4.2
+version:        0.4.4.1
 synopsis:       Utilities to interact with the Zcash blockchain
 description:    Please see the README on the repo at <https://git.vergara.tech/Vergara_Tech/zcash-haskell#readme>
 category:       Blockchain