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Sapling Spending keys and receivers #27

Merged
pitmutt merged 12 commits from rvv040 into dev040 2024-03-10 15:07:10 +00:00
Conversation 0 Commits 12 Files changed 8 +421 -11
8 changed files with 421 additions and 11 deletions
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1
CHANGELOG.md
View file

@ -19,6 +19,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
- Constants for Zcash protocol
- Types for Spending Keys and Receivers for Sapling and Orchard
- Function to generate an Orchard receiver
- Function to generate a Sapling receiver
### Changed

67
librustzcash-wrapper/src/lib.rs
View file

@ -2,7 +2,6 @@
//
// This file is part of Zcash-Haskell.
//
use std::{
marker::PhantomData,
io::{
@ -25,15 +24,23 @@ use haskell_ffi::{
use zip32;
use zcash_primitives::{
zip32::Scope as SaplingScope,
zip32::{
Scope as SaplingScope,
sapling_find_address,
sapling::DiversifierKey
},
zip339::{Count, Mnemonic},
transaction::components::sapling::{
GrothProofBytes,
OutputDescription,
OutputDescription
},
sapling::{
PaymentAddress,
keys::PreparedIncomingViewingKey as SaplingPreparedIncomingViewingKey,
keys::{
PreparedIncomingViewingKey as SaplingPreparedIncomingViewingKey,
ExpandedSpendingKey,
FullViewingKey as SaplingFullViewingKey
},
note_encryption::SaplingDomain
},
transaction::Transaction,
@ -50,7 +57,12 @@ use zcash_address::{
ZcashAddress
};
use zcash_client_backend::keys::sapling::ExtendedFullViewingKey;
use zcash_client_backend::keys::sapling::{
ExtendedFullViewingKey,
ExtendedSpendingKey
};
use zcash_primitives::zip32::{ AccountId, DiversifierIndex };
use orchard::{
Action,
@ -612,6 +624,51 @@ pub extern "C" fn rust_wrapper_recover_seed(
}
}
#[no_mangle]
pub extern "C" fn rust_wrapper_sapling_spendingkey(
iseed: *const u8,
iseed_len: usize,
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);
let extsk_bytes = extsk.to_bytes().to_vec();
marshall_to_haskell_var(&extsk_bytes, out, out_len, RW);
}
}
#[no_mangle]
pub extern "C" fn rust_wrapper_sapling_paymentaddress(
extspk: *const u8,
extspk_len: usize,
div_ix: u32,
out: *mut u8,
out_len: &mut usize
){
let extspk: Vec<u8> = marshall_from_haskell_var(extspk, extspk_len, RW);
let expsk = ExpandedSpendingKey::from_spending_key(&extspk);
let fvk = SaplingFullViewingKey::from_expanded_spending_key(&expsk);
let dk = DiversifierKey::master(&extspk);
let result = sapling_find_address(&fvk, &dk, DiversifierIndex::from(div_ix));
match result {
Some((_d, p_address)) => {
marshall_to_haskell_var(&p_address.to_bytes().to_vec(), out, out_len, RW);
},
None => {
marshall_to_haskell_var(&vec![0], out, out_len, RW);
}
}
}
#[no_mangle]
pub extern "C" fn rust_wrapper_derive_orchard_spending_key(
seed: *const u8,

15
src/C/Zcash.chs
View file

@ -134,6 +134,21 @@ import ZcashHaskell.Types
-> `()'
#}
{# fun unsafe rust_wrapper_sapling_spendingkey as rustWrapperSaplingSpendingkey
{ toBorshVar* `BS.ByteString'&
, getVarBuffer `Buffer (BS.ByteString)'&
}
-> `()'
#}
{# fun unsafe rust_wrapper_sapling_paymentaddress as rustWrapperSaplingPaymentAddress
{ toBorshVar* `BS.ByteString'&
, `Word32'
, getVarBuffer `Buffer (BS.ByteString)'&
}
-> `()'
#}
{# fun unsafe rust_wrapper_derive_orchard_spending_key as rustWrapperGenOrchardSpendKey
{ toBorshVar* `BS.ByteString'&
, `Word32'

37
src/ZcashHaskell/Sapling.hs
View file

@ -21,17 +21,28 @@ import C.Zcash
( rustWrapperIsShielded
, rustWrapperSaplingCheck
, rustWrapperSaplingNoteDecode
, rustWrapperSaplingPaymentAddress
, rustWrapperSaplingSpendingkey
, rustWrapperSaplingVkDecode
, rustWrapperTxParse
)
import Data.Aeson
import qualified Data.ByteString as BS
import Data.HexString (HexString(..), toBytes)
import Foreign.Rust.Marshall.Variable (withPureBorshVarBuffer)
import Data.Word
import Foreign.Rust.Marshall.Variable
( withPureBorshVarBuffer
, withPureBorshVarBuffer
)
import ZcashHaskell.Types
( DecodedNote(..)
( AccountId
, CoinType
, DecodedNote(..)
, RawData(..)
, RawTxResponse(..)
, SaplingReceiver
, SaplingSpendingKey(..)
, Seed(..)
, ShieldedOutput(..)
, decodeHexText
)
@ -81,3 +92,25 @@ instance FromJSON RawTxResponse where
Just o' -> do
a <- o' .: "actions"
pure $ RawTxResponse i h (getShieldedOutputs h) a ht c b
--
-- | Attempts to obtain a sapling SpendingKey using a HDSeed
genSaplingSpendingKey :: Seed -> Maybe SaplingSpendingKey
genSaplingSpendingKey seed = do
if BS.length res == 196
then Just res
else Nothing
where
res = withPureBorshVarBuffer (rustWrapperSaplingSpendingkey seed)
--
-- | Attempts to generate a sapling Payment Address using an ExtendedSpendingKey and a Diversifier Index
genSaplingPaymentAddress :: SaplingSpendingKey -> Int -> Maybe SaplingReceiver
genSaplingPaymentAddress extspk i =
if BS.length res == 43
then Just res
else Nothing
where
res =
withPureBorshVarBuffer
(rustWrapperSaplingPaymentAddress extspk (fromIntegral i))

20
src/ZcashHaskell/Transparent.hs
View file

@ -29,6 +29,10 @@ import ZcashHaskell.Types
, getTransparentPrefix
)
import Haskoin.Crypto.Keys.Extended
import Data.Word
import Crypto.Secp256k1
encodeTransparent :: TransparentAddress -> T.Text
encodeTransparent t =
encodeTransparent' (getTransparentPrefix (ta_net t) (ta_type t)) $ ta_bytes t
@ -41,3 +45,19 @@ encodeTransparent t =
sha256 bs = BA.convert (hash bs :: Digest SHA256)
digest = BS.pack [a, b] <> h
checksum = sha256 $ sha256 digest
-- | Attempts to generate an Extended Private Key from a known HDSeed.
genTransparentPrvKey ::
BS.ByteString -> XPrvKey
genTransparentPrvKey hdseed = do
makeXPrvKey hdseed
-- | Attempts to obtain an Extended Public Key from a known Extended Private Key
genTransparentPubKey ::
XPrvKey -> IO XPubKey
genTransparentPubKey xpvk = do
ioCtx <- createContext
let xpubk = deriveXPubKey ioCtx xpvk
return xpubk

7
src/ZcashHaskell/Utils.hs
View file

@ -32,6 +32,13 @@ import Foreign.Rust.Marshall.Variable
import Network.HTTP.Simple
import ZcashHaskell.Types
import Foreign.C.Types
import Foreign.Marshal.Array (allocaArray, peekArray)
import Foreign.Ptr (Ptr)
import Data.Word
-- |
-- | Decode the given bytestring using Bech32
decodeBech32 :: BS.ByteString -> RawData
decodeBech32 = withPureBorshVarBuffer . rustWrapperBech32Decode

278
test/Spec.hs
View file

@ -32,7 +32,7 @@ import qualified Data.Text as T
import qualified Data.Text.Encoding as E
import qualified Data.Text.Lazy.Encoding as LE
import qualified Data.Text.Lazy.IO as LTIO
import Data.Word
import GHC.Float.RealFracMethods (properFractionDoubleInteger)
import Test.Hspec
import Test.Hspec.QuickCheck
@ -41,15 +41,21 @@ import ZcashHaskell.Keys (generateWalletSeedPhrase, getWalletSeed)
import ZcashHaskell.Orchard
import ZcashHaskell.Sapling
( decodeSaplingOutput
, genSaplingPaymentAddress
, genSaplingSpendingKey
, getShieldedOutputs
, isValidSaplingViewingKey
, isValidShieldedAddress
, matchSaplingAddress
)
import ZcashHaskell.Transparent (encodeTransparent)
import ZcashHaskell.Transparent
--(encodeTransparent)
import ZcashHaskell.Types
( BlockResponse(..)
( AccountId
, BlockResponse(..)
, CoinType(..)
, CoinType
, DecodedNote(..)
, OrchardAction(..)
, Phrase(..)
@ -59,9 +65,17 @@ import ZcashHaskell.Types
, UnifiedAddress(..)
, UnifiedFullViewingKey(..)
, decodeHexText
, getValue
)
import ZcashHaskell.Utils
import Data.Word
import Foreign.C.Types
import Haskoin.Crypto.Keys.Extended
m2bs :: Maybe BS.ByteString -> BS.ByteString
m2bs x = fromMaybe "" x
main :: IO ()
main = do
hspec $ do
@ -467,6 +481,253 @@ main = do
Nothing -> "Bad UA"
Just u -> maybe "No transparent" encodeTransparent $ t_rec u
msg `shouldBe` "t1LPWuQnjCRH7JAeEErSXKixcUteLJRJjKD"
describe "Transparent Private and Publicc Key Generation" $ do
it "Obtain a transparent extended private key from HDSeed" $ do
let hdseed =
[ 206
, 61
, 120
, 38
, 206
, 40
, 201
, 62
, 83
, 175
, 151
, 131
, 218
, 141
, 206
, 254
, 28
, 244
, 172
, 213
, 128
, 248
, 156
, 45
, 204
, 44
, 169
, 3
, 162
, 188
, 16
, 173
, 192
, 164
, 96
, 148
, 91
, 52
, 244
, 83
, 149
, 169
, 82
, 196
, 199
, 53
, 177
, 170
, 1
, 6
, 0
, 120
, 170
, 2
, 238
, 219
, 241
, 243
, 172
, 178
, 104
, 81
, 159
, 144
] :: [Word8]
let xtpvk = genTransparentPrvKey (BS.pack hdseed)
let testpvk =
XPrvKey
0
"0000000000"
0
"fb5b9b89d3e9dfdebeaabd15de8fbc7e9a140b7f2de2b4034c2573425d39aceb"
"46aa0cd24a6e05709591426a4e682dd5406de4e75a39c0f410ee790403880943"
xtpvk `shouldBe` testpvk
it "Obtain a transparent extended public key from private key" $ do
let testpvk =
XPrvKey
0
"0000000000"
0
"fb5b9b89d3e9dfdebeaabd15de8fbc7e9a140b7f2de2b4034c2573425d39aceb"
"46aa0cd24a6e05709591426a4e682dd5406de4e75a39c0f410ee790403880943"
let testpbk =
XPubKey
0
"00000000"
0
"fb5b9b89d3e9dfdebeaabd15de8fbc7e9a140b7f2de2b4034c2573425d39aceb"
"279bda9c704f6da479cedb12c7cf773b3a348569dc1cfa6002526bad67674fd737b84a2bdb1199ecab1c9fed1b9a38aba5ba19259c1510d733a2376118515cd8"
let xtpubkIO = genTransparentPubKey testpvk
xtpubk <- xtpubkIO
---print $ show xtpubk
xtpubk `shouldBe` testpbk
describe "Sapling SpendingKey test" $ do
let hdseed =
BS.pack $
[ 206
, 61
, 120
, 38
, 206
, 40
, 201
, 62
, 83
, 175
, 151
, 131
, 218
, 141
, 206
, 254
, 28
, 244
, 172
, 213
, 128
, 248
, 156
, 45
, 204
, 44
, 169
, 3
, 162
, 188
, 16
, 173
, 192
, 164
, 96
, 148
, 91
, 52
, 244
, 83
, 149
, 169
, 82
, 196
, 199
, 53
, 177
, 170
, 1
, 6
, 0
, 120
, 170
, 2
, 238
, 219
, 241
, 243
, 172
, 178
, 104
, 81
, 159
, 144
]
--xit "Call function with parameters" $ do
--let msg = genSaplingSpendingKey (word8ArrayToByteString hdseed)
--let msgArr = BS.unpack msg
--if (length msgArr) == 169
--then True
--else False
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
let hdseed1 =
[ 206
, 61
, 120
, 38
, 206
, 40
, 201
, 62
, 83
, 175
, 151
, 131
, 218
, 141
, 206
, 254
, 28
, 244
, 172
, 213
, 128
, 248
, 156
, 45
, 204
, 44
, 169
, 3
, 162
, 188
, 16
, 173
, 192
, 164
, 96
, 148
, 91
, 52
, 244
, 83
, 149
, 169
, 82
, 196
, 199
, 53
, 177
, 170
, 1
, 6
, 0
, 120
, 170
, 2
, 238
, 219
, 241
, 243
, 172
, 178
, 104
, 81
, 159
, 144
] :: [Word8]
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 :: Int -> Property
@ -497,6 +758,14 @@ prop_OrchardReceiver c i j =
let sk = genOrchardSpendingKey (fromMaybe "" s) c i
return $ genOrchardReceiver j (fromMaybe "" sk) =/= 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)
genOrcArgs = do
@ -504,4 +773,7 @@ genOrcArgs = do
j <- arbitrarySizedNatural
c <- elements [MainNetCoin, TestNetCoin, RegTestNetCoin]
return (c, i, j)
genSapArgs :: Gen Int
genSapArgs = choose (1, 50)
-- | Arbitrary instances

7
zcash-haskell.cabal
View file

@ -5,7 +5,7 @@ cabal-version: 3.0
-- see: https://github.com/sol/hpack
name: zcash-haskell
version: 0.4.4.0
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
@ -55,6 +55,8 @@ library
, http-conduit
, memory
, text
, haskoin-core
, secp256k1-haskell
build-tool-depends:
c2hs:c2hs
default-language: Haskell2010
@ -76,5 +78,8 @@ test-suite zcash-haskell-test
, quickcheck-transformer
, text
, zcash-haskell
, binary
, cryptonite
, secp256k1-haskell
pkgconfig-depends: rustzcash_wrapper
default-language: Haskell2010