Prepare release

CHANGELOG.md

@@ -5,12 +5,23 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased] 
+## [0.1.0] - 2023-06-14 
 
 ### Added
 
+- Function `decodeHexText`
+- Function `decodeBech32`
 - Function `f4Jumble`
-- Function `isValidUnifiedAddress`
 - Function `f4UnJumble`
 - Function `isValidShieldedAddress`
-- Function `decodeBech32`
+- Function `isValidSaplingViewingKey`
+- Function `matchSaplingAddress`
+- Function `isValidUnifiedAddress`
+- Function `decodeUfvk`
+- Function `decryptOrchardAction`
+- Type `RawData`
+- Type `ShieldedOutput`
+- Type `OrchardAction`
+- Type `OrchardDecodedAction`
+- Type `UnifiedFullViewingKey`
+

Makefile

@@ -4,7 +4,10 @@ rustlib := librustzcash-wrapper/target/x86_64-unknown-linux-gnu/debug
 
 all: haskell
 
-haskell: src/Zcash.hs src/C/Zcash.chs package.yaml stack.yaml $(rustlib)/rustzcash_wrapper.h $(rustlib)/librustzcash_wrapper.a $(rustlib)/librustzcash_wrapper.so $(rustlib)/rustzcash_wrapper-uninstalled.pc
+test: test/Spec.hs haskell
+	stack test
+
+haskell: src/ZcashHaskell/Orchard.hs src/ZcashHaskell/Sapling.hs src/ZcashHaskell/Types.hs src/ZcashHaskell/Utils.hs src/C/Zcash.chs package.yaml stack.yaml $(rustlib)/rustzcash_wrapper.h $(rustlib)/librustzcash_wrapper.a $(rustlib)/librustzcash_wrapper.so $(rustlib)/rustzcash_wrapper-uninstalled.pc
 	stack build
 
 $(rustlib)/rustzcash_wrapper.h: librustzcash-wrapper/src/lib.rs librustzcash-wrapper/Cargo.toml

librustzcash-wrapper/Cargo.toml

@@ -14,6 +14,8 @@ borsh = "0.10"
 bech32 = "0.9.1"
 orchard = "0.4.0"
 zcash_note_encryption = "0.3.0"
+zcash_primitives = "0.11.0"
+zcash_client_backend = "0.9.0"
 
 [features]
 capi = []

librustzcash-wrapper/src/lib.rs

@@ -16,12 +16,34 @@ use haskell_ffi::{
     FromHaskell, HaskellSize, ToHaskell
 };
 
+use zcash_primitives::{
+    zip32::Scope as SaplingScope,
+    transaction::components::sapling::{
+        GrothProofBytes,
+        OutputDescription,
+        CompactOutputDescription
+    },
+    sapling::{
+        value::ValueCommitment as SaplingValueCommitment,
+        keys::FullViewingKey as SaplingViewingKey,
+        note_encryption::SaplingDomain,
+        PaymentAddress,
+        note::ExtractedNoteCommitment as SaplingExtractedNoteCommitment
+    },
+    consensus::{
+        MainNetwork,
+        BlockHeight
+    }
+};
+
 use zcash_address::{
     Network,
     unified::{Address, Encoding, Ufvk, Container, Fvk},
     ZcashAddress
 };
 
+use zcash_client_backend::keys::sapling::ExtendedFullViewingKey;
+
 use orchard::{
     Action,
     keys::{FullViewingKey, PreparedIncomingViewingKey, Scope},
@@ -31,11 +53,14 @@ use orchard::{
     value::ValueCommitment
 };
 
-use zcash_note_encryption;
+use zcash_note_encryption::EphemeralKeyBytes;
 
 use bech32::{
     decode,
-    u5
+    u5,
+    FromBase32,
+    ToBase32,
+    Variant
 };
 
 pub enum RW {}
@@ -61,6 +86,23 @@ impl<RW> ToHaskell<RW> for RawData {
     //}
 //}
 
+#[derive(BorshSerialize, BorshDeserialize)]
+pub struct HshieldedOutput {
+    cv: Vec<u8>,
+    cmu: Vec<u8>,
+    eph_key: Vec<u8>,
+    enc_txt: Vec<u8>,
+    out_txt: Vec<u8>,
+    proof: Vec<u8>
+}
+
+impl<RW> FromHaskell<RW> for HshieldedOutput {
+    fn from_haskell(buf: &mut &[u8], _tag: PhantomData<RW>) -> Result<Self> {
+        let x = HshieldedOutput::deserialize(buf)?;
+        Ok(x)
+    }
+}
+
 #[derive(BorshSerialize, BorshDeserialize)]
 pub struct Haction {
     nf: Vec<u8>,
@@ -124,6 +166,19 @@ impl Hufvk {
     }
 }
 
+#[derive(BorshSerialize, BorshDeserialize)]
+pub struct Hsvk {
+    vk: Vec<u8>,
+    ovk: Vec<u8>
+}
+
+impl<RW> ToHaskell<RW> for Hsvk {
+    fn to_haskell<W: Write>(&self, writer: &mut W, _tag: PhantomData<RW>) -> Result<()> {
+        self.serialize(writer)?;
+        Ok(())
+    }
+}
+
 fn to_array<T, const N: usize>(v: Vec<T>) -> [T; N] {
     v.try_into().unwrap_or_else(|v: Vec<T>| panic!("Expected a Vec of length {} but it was {}", N, v.len()))
 }
@@ -175,10 +230,58 @@ pub extern "C" fn rust_wrapper_bech32decode(
     out_len: &mut usize
     ) {
     let input: String = marshall_from_haskell_var(input, input_len, RW);
-    let (hrp, bytes) = bech32::decode_without_checksum(&input).unwrap();
-    let rd = RawData {hrp: hrp.into(), bytes: bytes.iter().map(|&x| bech32::u5::to_u8(x)).collect()};
+    let decodedBytes = bech32::decode(&input);
+    match decodedBytes {
+        Ok((hrp, bytes, variant)) => {
+            let rd = RawData {hrp: hrp.into(), bytes: Vec::<u8>::from_base32(&bytes).unwrap()};
             marshall_to_haskell_var(&rd, out, out_len, RW);
         }
+        Err(_e) => {
+            let rd1 = RawData {hrp: "fail".into(), bytes: vec![0]};
+            marshall_to_haskell_var(&rd1, out, out_len, RW);
+        }
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn rust_wrapper_svk_decode(
+    input: *const u8,
+    input_len: usize
+    ) -> bool {
+    let input: Vec<u8> = marshall_from_haskell_var(input, input_len, RW);
+    let svk = ExtendedFullViewingKey::read(&*input);
+    match svk {
+        Ok(k) => {
+            true
+        }
+        Err(e) => {
+            print!("{}", e);
+            false
+        }
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn rust_wrapper_svk_check_address(
+    key_input: *const u8,
+    key_input_len: usize,
+    address_input: *const u8,
+    address_input_len: usize
+    ) -> bool {
+    let key_input: Vec<u8> = marshall_from_haskell_var(key_input, key_input_len, RW);
+    let address_input: Vec<u8> = marshall_from_haskell_var(address_input, address_input_len, RW);
+    let svk = ExtendedFullViewingKey::read(&*key_input);
+    let sa = PaymentAddress::from_bytes(&to_array(address_input)).unwrap();
+    match svk {
+        Ok(k) => {
+            let (div_index, def_address) = k.default_address();
+            sa == def_address
+        }
+        Err(e) => {
+            false
+        }
+    }
+}
 
 #[no_mangle]
 pub extern "C" fn rust_wrapper_ufvk_decode(
@@ -208,6 +311,36 @@ pub extern "C" fn rust_wrapper_ufvk_decode(
     }
 }
 
+//#[no_mangle]
+//pub extern "C" fn rust_wrapper_sapling_note_decrypt(
+    //key: *const u8,
+    //key_len: usize,
+    //note: *const u8,
+    //note_len: usize,
+    //out: *mut u8,
+    //out_len: &mut usize
+    //){
+    //let evk: Vec<u8> = marshall_from_haskell_var(key, key_len, RW);
+    //let note_input: HshieldedOutput = marshall_from_haskell_var(note,note_len,RW);
+    //let svk = ExtendedFullViewingKey::read(&*evk);
+    //match svk {
+        //Ok(k) => {
+            //let domain = SaplingDomain::for_height(MainNetwork, BlockHeight::from_u32(2000000));
+            //let action: CompactOutputDescription = CompactOutputDescription {
+                //ephemeral_key: EphemeralKeyBytes(to_array(note_input.eph_key)),
+                //cmu: SaplingExtractedNoteCommitment::from_bytes(&to_array(note_input.cmu)).unwrap(),
+                //enc_ciphertext: to_array(note_input.enc_txt)
+            //};
+            //let fvk = k.to_diversifiable_full_viewing_key().to_ivk(SaplingScope::External);
+            //let result = zcash_note_encryption::try_note_decryption(&domain, &ivk, &action);
+        //}
+        //Err(_e) => {
+            //let hn0 = Hnote { note: 0, recipient: vec![0], memo: vec![0] };
+            //marshall_to_haskell_var(&hn0, out, out_len, RW);
+        //}
+    //}
+//}
+
 #[no_mangle]
 pub extern "C" fn rust_wrapper_orchard_note_decrypt(
     key: *const u8,

src/C/Zcash.chs

@@ -23,7 +23,7 @@ import Foreign.Rust.Serialisation.Raw
 import Foreign.Rust.Serialisation.Raw.Base16
 import qualified Generics.SOP as SOP
 import qualified GHC.Generics as GHC
-import HaskellZcash.Types
+import ZcashHaskell.Types
 
 
 {# fun unsafe rust_wrapper_f4jumble as rustWrapperF4Jumble
@@ -59,6 +59,19 @@ import HaskellZcash.Types
   -> `()'
 #}
 
+{# fun pure unsafe rust_wrapper_svk_decode as rustWrapperSaplingVkDecode
+     { toBorshVar* `BS.ByteString'&
+     }
+  -> `Bool'
+#}
+
+{# fun pure unsafe rust_wrapper_svk_check_address as rustWrapperSaplingCheck
+     { toBorshVar* `BS.ByteString'&
+     , toBorshVar* `BS.ByteString'&
+     }
+  -> `Bool'
+#}
+
 {# fun unsafe rust_wrapper_ufvk_decode as rustWrapperUfvkDecode
      { toBorshVar* `BS.ByteString'&
      , getVarBuffer `Buffer UnifiedFullViewingKey'&

src/HaskellZcash/Sapling.hs

@@ -1,8 +0,0 @@
-module HaskellZcash.Sapling where
-
-import C.Zcash (rustWrapperIsShielded)
-import qualified Data.ByteString as BS
-
--- | Check if given bytesting is a valid encoded shielded address
-isValidShieldedAddress :: BS.ByteString -> Bool
-isValidShieldedAddress = rustWrapperIsShielded

src/ZcashHaskell/Orchard.hs

@@ -1,4 +1,4 @@
-module HaskellZcash.Orchard where
+module ZcashHaskell.Orchard where
 
 import C.Zcash
   ( rustWrapperIsUA
@@ -7,7 +7,7 @@ import C.Zcash
   )
 import qualified Data.ByteString as BS
 import Foreign.Rust.Marshall.Variable
-import HaskellZcash.Types
+import ZcashHaskell.Types
 
 -- | Check if given bytestring is a valid encoded unified address
 isValidUnifiedAddress :: BS.ByteString -> Bool

src/ZcashHaskell/Sapling.hs

@@ -0,0 +1,20 @@
+module ZcashHaskell.Sapling where
+
+import C.Zcash
+  ( rustWrapperIsShielded
+  , rustWrapperSaplingCheck
+  , rustWrapperSaplingVkDecode
+  )
+import qualified Data.ByteString as BS
+
+-- | Check if given bytesting is a valid encoded shielded address
+isValidShieldedAddress :: BS.ByteString -> Bool
+isValidShieldedAddress = rustWrapperIsShielded
+
+-- | Check if given bytestring is a valid Sapling viewing key
+isValidSaplingViewingKey :: BS.ByteString -> Bool
+isValidSaplingViewingKey = rustWrapperSaplingVkDecode
+
+-- | Check if the given bytestring for the Sapling viewing key matches the second bytestring for the address
+matchSaplingAddress :: BS.ByteString -> BS.ByteString -> Bool
+matchSaplingAddress = rustWrapperSaplingCheck

src/ZcashHaskell/Types.hs

@@ -1,11 +1,9 @@
-{-# LANGUAGE DerivingStrategies #-}
 {-# LANGUAGE DeriveGeneric #-}
 {-# LANGUAGE DeriveAnyClass #-}
 {-# LANGUAGE DerivingVia #-}
-{-# LANGUAGE GeneralizedNewtypeDeriving #-}
 {-# LANGUAGE UndecidableInstances #-}
 
-module HaskellZcash.Types where
+module ZcashHaskell.Types where
 
 import qualified Data.ByteString as BS
 import Codec.Borsh
@@ -33,6 +31,20 @@ data UnifiedFullViewingKey =
   deriving anyclass (Data.Structured.Show)
   deriving (BorshSize, ToBorsh, FromBorsh) via AsStruct UnifiedFullViewingKey
     
+data ShieldedOutput =
+  ShieldedOutput
+    { s_cv :: BS.ByteString
+    , s_cmu :: BS.ByteString
+    , s_ephKey :: BS.ByteString
+    , s_encCipherText :: BS.ByteString
+    , s_outCipherText :: BS.ByteString
+    , s_proof :: BS.ByteString
+    }
+  deriving stock (Eq, Prelude.Show, GHC.Generic)
+  deriving anyclass (SOP.Generic, SOP.HasDatatypeInfo)
+  deriving anyclass (Data.Structured.Show)
+  deriving (BorshSize, ToBorsh, FromBorsh) via AsStruct ShieldedOutput
+
 data OrchardAction =
   OrchardAction
     { nf :: BS.ByteString

src/ZcashHaskell/Utils.hs

@@ -1,4 +1,4 @@
-module HaskellZcash.Utils where
+module ZcashHaskell.Utils where
 
 import C.Zcash
   ( rustWrapperBech32Decode
@@ -8,7 +8,7 @@ import C.Zcash
 
 import qualified Data.ByteString as BS
 import Foreign.Rust.Marshall.Variable
-import HaskellZcash.Types
+import ZcashHaskell.Types
 
 -- | Helper function to turn a hex-encoded strings to bytestring
 decodeHexText :: String -> BS.ByteString

test/Spec.hs

@@ -4,19 +4,30 @@ import C.Zcash (rustWrapperIsUA)
 import qualified Data.ByteString as BS
 import qualified Data.Text.Encoding as E
 import Data.Word
-import HaskellZcash.Orchard
-import HaskellZcash.Types
+import Test.Hspec
+import ZcashHaskell.Orchard
+import ZcashHaskell.Sapling
+  ( isValidSaplingViewingKey
+  , isValidShieldedAddress
+  , matchSaplingAddress
+  )
+import ZcashHaskell.Types
   ( OrchardAction(..)
   , OrchardDecodedAction(..)
   , RawData(..)
   , UnifiedFullViewingKey(..)
   )
-import HaskellZcash.Utils
-import Test.Hspec
+import ZcashHaskell.Utils
 
 main :: IO ()
 main = do
   hspec $ do
+    describe "Bech32" $ do
+      let s = "bech321qqqsyrhqy2a"
+      let decodedString = decodeBech32 s
+      it "hrp matches" $ do hrp decodedString `shouldBe` "bech32"
+      it "data matches" $ do
+        bytes decodedString `shouldBe` BS.pack ([0x00, 0x01, 0x02] :: [Word8])
     describe "F4Jumble" $ do
       it "jumble a string" $ do
         let input =
@@ -222,6 +233,37 @@ main = do
               , 0x22
               ] :: [Word8]
         f4UnJumble (BS.pack out) `shouldBe` BS.pack input
+    describe "Sapling address" $ do
+      it "succeeds with valid address" $ do
+        let sa =
+              "zs17faa6l5ma55s55exq9rnr32tu0wl8nmqg7xp3e6tz0m5ajn2a6yxlc09t03mqdmvyphavvf3sl8"
+        isValidShieldedAddress sa `shouldBe` True
+      it "fails with invalid address" $ do
+        let sa =
+              "zs17faa6l5ma55s55exq9rnr32tu0wl8nmqg7xp3e6tz0m5ajn2a6yxlc09t03mqdmvyphavvffake"
+        isValidShieldedAddress sa `shouldBe` False
+    describe "Decode Sapling VK" $ do
+      let vk =
+            "zxviews1qdjagrrpqqqqpq8es75mlu6rref0qyrstchf8dxzeygtsejwfqu8ckhwl2qj5m8am7lmupxk3vkvdjm8pawjpmesjfapvsqw96pa46c2z0kk7letrxf7mkltwz54fwpxc7kc79mm5kce3rwn5ssl009zwsra2spppwgrx25s9k5hq65f69l4jz2tjmqgy0pl49qmtaj3nudk6wglwe2hpa327hydlchtyq9av6wjd6hu68e04ahwk9a9n2kt0kj3nj99nue65awtu5cwwcpjs"
+      let sa =
+            "zs1g2ne5w2r8kvalwzngsk3kfzppx3qcx5560pnfmw9rj5xfd3zfg9dkm7hyxnfyhc423fev5wuue4"
+      let sa' =
+            "zs17faa6l5ma55s55exq9rnr32tu0wl8nmqg7xp3e6tz0m5ajn2a6yxlc09t03mqdmvyphavvf3sl8"
+      let rawKey = decodeBech32 vk
+      let rawSa = decodeBech32 sa
+      let rawSa' = decodeBech32 sa'
+      it "is mainnet" $ do hrp rawKey `shouldBe` "zxviews"
+      it "is valid Sapling extended full viewing key" $ do
+        isValidSaplingViewingKey (bytes rawKey) `shouldBe` True
+      it "matches the right Sapling address" $ do
+        matchSaplingAddress (bytes rawKey) (bytes rawSa) `shouldBe` True
+      it "doesn't match the wrong Sapling address" $ do
+        matchSaplingAddress (bytes rawKey) (bytes rawSa') `shouldBe` False
+    describe "Decode invalid Sapling VK" $ do
+      let vk =
+            "zxviews1qdjagrrpqqqqpq8es75mlu6rref0qyrstchf8dxzeygtsejwfqu8ckhwl2qj5m8am7lmupxk3vkvdjm8pawjpmesjfapvsqw96pa46c2z0kk7letrxf7mkltwz54fwpxc7kc79mm5kce3rwn5ssl009zwsra2spppwgrx25s9k5hq65f69l4jz2tjmqgy0pl49qmtaj3nudk6wglwe2hpa327hydlchtyq9av6wjd6hu68e04ahwk9a9n2kt0kj3nj99nue65awtu5cwwfake"
+      let rawKey = decodeBech32 vk
+      it "is not mainnet" $ do hrp rawKey `shouldBe` "fail"
     describe "Unified address" $ do
       it "succeeds with correct UA" $ do
         let ua =

zcash-haskell.cabal

@@ -27,10 +27,10 @@ source-repository head
 library
   exposed-modules:
       C.Zcash
-      HaskellZcash.Orchard
-      HaskellZcash.Sapling
-      HaskellZcash.Types
-      HaskellZcash.Utils
+      ZcashHaskell.Orchard
+      ZcashHaskell.Sapling
+      ZcashHaskell.Types
+      ZcashHaskell.Utils
   other-modules:
       Paths_zcash_haskell
   hs-source-dirs: