Smash out Monero addresses

2025-12-13 14:39:25 +00:00 · 2024-06-23 14:17:04 -04:00
parent 0b20004ba1
commit eb0c19bfff
13 changed files with 257 additions and 30 deletions
--- a/coins/monero/wallet/src/address.rs
+++ b/coins/monero/wallet/src/address.rs
@@ -1,325 +0,0 @@
-use core::{marker::PhantomData, fmt};
-use std_shims::string::ToString;
-
-use zeroize::Zeroize;
-
-use curve25519_dalek::edwards::EdwardsPoint;
-
-use monero_serai::io::decompress_point;
-
-use base58_monero::base58::{encode_check, decode_check};
-
-/// The network this address is for.
-#[derive(Clone, Copy, PartialEq, Eq, Debug, Zeroize)]
-pub enum Network {
-  Mainnet,
-  Testnet,
-  Stagenet,
-}
-
-/// The address type, supporting the officially documented addresses, along with
-/// [Featured Addresses](https://gist.github.com/kayabaNerve/01c50bbc35441e0bbdcee63a9d823789).
-#[derive(Clone, Copy, PartialEq, Eq, Debug, Zeroize)]
-pub enum AddressType {
-  Standard,
-  Integrated([u8; 8]),
-  Subaddress,
-  Featured { subaddress: bool, payment_id: Option<[u8; 8]>, guaranteed: bool },
-}
-
-#[derive(Clone, Copy, PartialEq, Eq, Debug, Zeroize)]
-pub struct SubaddressIndex {
-  pub(crate) account: u32,
-  pub(crate) address: u32,
-}
-
-impl SubaddressIndex {
-  pub const fn new(account: u32, address: u32) -> Option<SubaddressIndex> {
-    if (account == 0) && (address == 0) {
-      return None;
-    }
-    Some(SubaddressIndex { account, address })
-  }
-
-  pub fn account(&self) -> u32 {
-    self.account
-  }
-
-  pub fn address(&self) -> u32 {
-    self.address
-  }
-}
-
-/// Address specification. Used internally to create addresses.
-#[derive(Clone, Copy, PartialEq, Eq, Debug, Zeroize)]
-pub enum AddressSpec {
-  Standard,
-  Integrated([u8; 8]),
-  Subaddress(SubaddressIndex),
-  Featured { subaddress: Option<SubaddressIndex>, payment_id: Option<[u8; 8]>, guaranteed: bool },
-}
-
-impl AddressType {
-  pub fn is_subaddress(&self) -> bool {
-    matches!(self, AddressType::Subaddress) ||
-      matches!(self, AddressType::Featured { subaddress: true, .. })
-  }
-
-  pub fn payment_id(&self) -> Option<[u8; 8]> {
-    if let AddressType::Integrated(id) = self {
-      Some(*id)
-    } else if let AddressType::Featured { payment_id, .. } = self {
-      *payment_id
-    } else {
-      None
-    }
-  }
-
-  pub fn is_guaranteed(&self) -> bool {
-    matches!(self, AddressType::Featured { guaranteed: true, .. })
-  }
-}
-
-/// A type which returns the byte for a given address.
-pub trait AddressBytes: Clone + Copy + PartialEq + Eq + fmt::Debug {
-  fn network_bytes(network: Network) -> (u8, u8, u8, u8);
-}
-
-/// Address bytes for Monero.
-#[derive(Clone, Copy, PartialEq, Eq, Debug)]
-pub struct MoneroAddressBytes;
-impl AddressBytes for MoneroAddressBytes {
-  fn network_bytes(network: Network) -> (u8, u8, u8, u8) {
-    match network {
-      Network::Mainnet => (18, 19, 42, 70),
-      Network::Testnet => (53, 54, 63, 111),
-      Network::Stagenet => (24, 25, 36, 86),
-    }
-  }
-}
-
-/// Address metadata.
-#[derive(Clone, Copy, PartialEq, Eq, Debug)]
-pub struct AddressMeta<B: AddressBytes> {
-  _bytes: PhantomData<B>,
-  pub network: Network,
-  pub kind: AddressType,
-}
-
-impl<B: AddressBytes> Zeroize for AddressMeta<B> {
-  fn zeroize(&mut self) {
-    self.network.zeroize();
-    self.kind.zeroize();
-  }
-}
-
-/// Error when decoding an address.
-#[derive(Clone, Copy, PartialEq, Eq, Debug)]
-#[cfg_attr(feature = "std", derive(thiserror::Error))]
-pub enum AddressError {
-  #[cfg_attr(feature = "std", error("invalid address byte"))]
-  InvalidByte,
-  #[cfg_attr(feature = "std", error("invalid address encoding"))]
-  InvalidEncoding,
-  #[cfg_attr(feature = "std", error("invalid length"))]
-  InvalidLength,
-  #[cfg_attr(feature = "std", error("invalid key"))]
-  InvalidKey,
-  #[cfg_attr(feature = "std", error("unknown features"))]
-  UnknownFeatures,
-  #[cfg_attr(feature = "std", error("different network than expected"))]
-  DifferentNetwork,
-}
-
-impl<B: AddressBytes> AddressMeta<B> {
-  #[allow(clippy::wrong_self_convention)]
-  fn to_byte(&self) -> u8 {
-    let bytes = B::network_bytes(self.network);
-    match self.kind {
-      AddressType::Standard => bytes.0,
-      AddressType::Integrated(_) => bytes.1,
-      AddressType::Subaddress => bytes.2,
-      AddressType::Featured { .. } => bytes.3,
-    }
-  }
-
-  /// Create an address's metadata.
-  pub fn new(network: Network, kind: AddressType) -> Self {
-    AddressMeta { _bytes: PhantomData, network, kind }
-  }
-
-  // Returns an incomplete instantiation in the case of Integrated/Featured addresses
-  fn from_byte(byte: u8) -> Result<Self, AddressError> {
-    let mut meta = None;
-    for network in [Network::Mainnet, Network::Testnet, Network::Stagenet] {
-      let (standard, integrated, subaddress, featured) = B::network_bytes(network);
-      if let Some(kind) = match byte {
-        _ if byte == standard => Some(AddressType::Standard),
-        _ if byte == integrated => Some(AddressType::Integrated([0; 8])),
-        _ if byte == subaddress => Some(AddressType::Subaddress),
-        _ if byte == featured => {
-          Some(AddressType::Featured { subaddress: false, payment_id: None, guaranteed: false })
-        }
-        _ => None,
-      } {
-        meta = Some(AddressMeta::new(network, kind));
-        break;
-      }
-    }
-
-    meta.ok_or(AddressError::InvalidByte)
-  }
-
-  pub fn is_subaddress(&self) -> bool {
-    self.kind.is_subaddress()
-  }
-
-  pub fn payment_id(&self) -> Option<[u8; 8]> {
-    self.kind.payment_id()
-  }
-
-  pub fn is_guaranteed(&self) -> bool {
-    self.kind.is_guaranteed()
-  }
-}
-
-/// A Monero address, composed of metadata and a spend/view key.
-#[derive(Clone, Copy, PartialEq, Eq)]
-pub struct Address<B: AddressBytes> {
-  pub meta: AddressMeta<B>,
-  pub spend: EdwardsPoint,
-  pub view: EdwardsPoint,
-}
-
-impl<B: AddressBytes> fmt::Debug for Address<B> {
-  fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
-    fmt
-      .debug_struct("Address")
-      .field("meta", &self.meta)
-      .field("spend", &hex::encode(self.spend.compress().0))
-      .field("view", &hex::encode(self.view.compress().0))
-      // This is not a real field yet is the most valuable thing to know when debugging
-      .field("(address)", &self.to_string())
-      .finish()
-  }
-}
-
-impl<B: AddressBytes> Zeroize for Address<B> {
-  fn zeroize(&mut self) {
-    self.meta.zeroize();
-    self.spend.zeroize();
-    self.view.zeroize();
-  }
-}
-
-impl<B: AddressBytes> fmt::Display for Address<B> {
-  fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-    let mut data = vec![self.meta.to_byte()];
-    data.extend(self.spend.compress().to_bytes());
-    data.extend(self.view.compress().to_bytes());
-    if let AddressType::Featured { subaddress, payment_id, guaranteed } = self.meta.kind {
-      // Technically should be a VarInt, yet we don't have enough features it's needed
-      data.push(
-        u8::from(subaddress) + (u8::from(payment_id.is_some()) << 1) + (u8::from(guaranteed) << 2),
-      );
-    }
-    if let Some(id) = self.meta.kind.payment_id() {
-      data.extend(id);
-    }
-    write!(f, "{}", encode_check(&data).unwrap())
-  }
-}
-
-impl<B: AddressBytes> Address<B> {
-  pub fn new(meta: AddressMeta<B>, spend: EdwardsPoint, view: EdwardsPoint) -> Self {
-    Address { meta, spend, view }
-  }
-
-  pub fn from_str_raw(s: &str) -> Result<Self, AddressError> {
-    let raw = decode_check(s).map_err(|_| AddressError::InvalidEncoding)?;
-    if raw.len() < (1 + 32 + 32) {
-      Err(AddressError::InvalidLength)?;
-    }
-
-    let mut meta = AddressMeta::from_byte(raw[0])?;
-    let spend =
-      decompress_point(raw[1 .. 33].try_into().unwrap()).ok_or(AddressError::InvalidKey)?;
-    let view =
-      decompress_point(raw[33 .. 65].try_into().unwrap()).ok_or(AddressError::InvalidKey)?;
-    let mut read = 65;
-
-    if matches!(meta.kind, AddressType::Featured { .. }) {
-      if raw[read] >= (2 << 3) {
-        Err(AddressError::UnknownFeatures)?;
-      }
-
-      let subaddress = (raw[read] & 1) == 1;
-      let integrated = ((raw[read] >> 1) & 1) == 1;
-      let guaranteed = ((raw[read] >> 2) & 1) == 1;
-
-      meta.kind = AddressType::Featured {
-        subaddress,
-        payment_id: Some([0; 8]).filter(|_| integrated),
-        guaranteed,
-      };
-      read += 1;
-    }
-
-    // Update read early so we can verify the length
-    if meta.kind.payment_id().is_some() {
-      read += 8;
-    }
-    if raw.len() != read {
-      Err(AddressError::InvalidLength)?;
-    }
-
-    if let AddressType::Integrated(ref mut id) = meta.kind {
-      id.copy_from_slice(&raw[(read - 8) .. read]);
-    }
-    if let AddressType::Featured { payment_id: Some(ref mut id), .. } = meta.kind {
-      id.copy_from_slice(&raw[(read - 8) .. read]);
-    }
-
-    Ok(Address { meta, spend, view })
-  }
-
-  pub fn from_str(network: Network, s: &str) -> Result<Self, AddressError> {
-    Self::from_str_raw(s).and_then(|addr| {
-      if addr.meta.network == network {
-        Ok(addr)
-      } else {
-        Err(AddressError::DifferentNetwork)?
-      }
-    })
-  }
-
-  pub fn network(&self) -> Network {
-    self.meta.network
-  }
-
-  pub fn is_subaddress(&self) -> bool {
-    self.meta.is_subaddress()
-  }
-
-  pub fn payment_id(&self) -> Option<[u8; 8]> {
-    self.meta.payment_id()
-  }
-
-  pub fn is_guaranteed(&self) -> bool {
-    self.meta.is_guaranteed()
-  }
-}
-
-/// Instantiation of the Address type with Monero's network bytes.
-pub type MoneroAddress = Address<MoneroAddressBytes>;
-// Allow re-interpreting of an arbitrary address as a monero address so it can be used with the
-// rest of this library. Doesn't use From as it was conflicting with From<T> for T.
-impl MoneroAddress {
-  pub fn from<B: AddressBytes>(address: Address<B>) -> MoneroAddress {
-    MoneroAddress::new(
-      AddressMeta::new(address.meta.network, address.meta.kind),
-      address.spend,
-      address.view,
-    )
-  }
-}
--- a/coins/monero/wallet/src/lib.rs
+++ b/coins/monero/wallet/src/lib.rs
@@ -31,8 +31,7 @@ pub use monero_rpc as rpc;
 pub mod extra;
 pub(crate) use extra::{PaymentId, ExtraField, Extra};

-/// Address encoding and decoding functionality.
-pub mod address;
+pub use monero_address as address;
 use address::{Network, AddressType, SubaddressIndex, AddressSpec, AddressMeta, MoneroAddress};

 mod scan;
--- a/coins/monero/wallet/src/tests/address.rs
+++ b/coins/monero/wallet/src/tests/address.rs
@@ -1,173 +0,0 @@
-use hex_literal::hex;
-
-use rand_core::{RngCore, OsRng};
-
-use curve25519_dalek::{constants::ED25519_BASEPOINT_TABLE, scalar::Scalar};
-
-use monero_serai::io::decompress_point;
-
-use crate::address::{Network, AddressType, AddressMeta, MoneroAddress};
-
-const SPEND: [u8; 32] = hex!("f8631661f6ab4e6fda310c797330d86e23a682f20d5bc8cc27b18051191f16d7");
-const VIEW: [u8; 32] = hex!("4a1535063ad1fee2dabbf909d4fd9a873e29541b401f0944754e17c9a41820ce");
-
-const STANDARD: &str =
-  "4B33mFPMq6mKi7Eiyd5XuyKRVMGVZz1Rqb9ZTyGApXW5d1aT7UBDZ89ewmnWFkzJ5wPd2SFbn313vCT8a4E2Qf4KQH4pNey";
-
-const PAYMENT_ID: [u8; 8] = hex!("b8963a57855cf73f");
-const INTEGRATED: &str =
-  "4Ljin4CrSNHKi7Eiyd5XuyKRVMGVZz1Rqb9ZTyGApXW5d1aT7UBDZ89ewmnWFkzJ5wPd2SFbn313vCT8a4E2Qf4KbaTH6Mn\
-  pXSn88oBX35";
-
-const SUB_SPEND: [u8; 32] =
-  hex!("fe358188b528335ad1cfdc24a22a23988d742c882b6f19a602892eaab3c1b62b");
-const SUB_VIEW: [u8; 32] = hex!("9bc2b464de90d058468522098d5610c5019c45fd1711a9517db1eea7794f5470");
-const SUBADDRESS: &str =
-  "8C5zHM5ud8nGC4hC2ULiBLSWx9infi8JUUmWEat4fcTf8J4H38iWYVdFmPCA9UmfLTZxD43RsyKnGEdZkoGij6csDeUnbEB";
-
-const FEATURED_JSON: &str = include_str!("vectors/featured_addresses.json");
-
-#[test]
-fn standard_address() {
-  let addr = MoneroAddress::from_str(Network::Mainnet, STANDARD).unwrap();
-  assert_eq!(addr.meta.network, Network::Mainnet);
-  assert_eq!(addr.meta.kind, AddressType::Standard);
-  assert!(!addr.meta.kind.is_subaddress());
-  assert_eq!(addr.meta.kind.payment_id(), None);
-  assert!(!addr.meta.kind.is_guaranteed());
-  assert_eq!(addr.spend.compress().to_bytes(), SPEND);
-  assert_eq!(addr.view.compress().to_bytes(), VIEW);
-  assert_eq!(addr.to_string(), STANDARD);
-}
-
-#[test]
-fn integrated_address() {
-  let addr = MoneroAddress::from_str(Network::Mainnet, INTEGRATED).unwrap();
-  assert_eq!(addr.meta.network, Network::Mainnet);
-  assert_eq!(addr.meta.kind, AddressType::Integrated(PAYMENT_ID));
-  assert!(!addr.meta.kind.is_subaddress());
-  assert_eq!(addr.meta.kind.payment_id(), Some(PAYMENT_ID));
-  assert!(!addr.meta.kind.is_guaranteed());
-  assert_eq!(addr.spend.compress().to_bytes(), SPEND);
-  assert_eq!(addr.view.compress().to_bytes(), VIEW);
-  assert_eq!(addr.to_string(), INTEGRATED);
-}
-
-#[test]
-fn subaddress() {
-  let addr = MoneroAddress::from_str(Network::Mainnet, SUBADDRESS).unwrap();
-  assert_eq!(addr.meta.network, Network::Mainnet);
-  assert_eq!(addr.meta.kind, AddressType::Subaddress);
-  assert!(addr.meta.kind.is_subaddress());
-  assert_eq!(addr.meta.kind.payment_id(), None);
-  assert!(!addr.meta.kind.is_guaranteed());
-  assert_eq!(addr.spend.compress().to_bytes(), SUB_SPEND);
-  assert_eq!(addr.view.compress().to_bytes(), SUB_VIEW);
-  assert_eq!(addr.to_string(), SUBADDRESS);
-}
-
-#[test]
-fn featured() {
-  for (network, first) in
-    [(Network::Mainnet, 'C'), (Network::Testnet, 'K'), (Network::Stagenet, 'F')]
-  {
-    for _ in 0 .. 100 {
-      let spend = &Scalar::random(&mut OsRng) * ED25519_BASEPOINT_TABLE;
-      let view = &Scalar::random(&mut OsRng) * ED25519_BASEPOINT_TABLE;
-
-      for features in 0 .. (1 << 3) {
-        const SUBADDRESS_FEATURE_BIT: u8 = 1;
-        const INTEGRATED_FEATURE_BIT: u8 = 1 << 1;
-        const GUARANTEED_FEATURE_BIT: u8 = 1 << 2;
-
-        let subaddress = (features & SUBADDRESS_FEATURE_BIT) == SUBADDRESS_FEATURE_BIT;
-
-        let mut payment_id = [0; 8];
-        OsRng.fill_bytes(&mut payment_id);
-        let payment_id = Some(payment_id)
-          .filter(|_| (features & INTEGRATED_FEATURE_BIT) == INTEGRATED_FEATURE_BIT);
-
-        let guaranteed = (features & GUARANTEED_FEATURE_BIT) == GUARANTEED_FEATURE_BIT;
-
-        let kind = AddressType::Featured { subaddress, payment_id, guaranteed };
-        let meta = AddressMeta::new(network, kind);
-        let addr = MoneroAddress::new(meta, spend, view);
-
-        assert_eq!(addr.to_string().chars().next().unwrap(), first);
-        assert_eq!(MoneroAddress::from_str(network, &addr.to_string()).unwrap(), addr);
-
-        assert_eq!(addr.spend, spend);
-        assert_eq!(addr.view, view);
-
-        assert_eq!(addr.is_subaddress(), subaddress);
-        assert_eq!(addr.payment_id(), payment_id);
-        assert_eq!(addr.is_guaranteed(), guaranteed);
-      }
-    }
-  }
-}
-
-#[test]
-fn featured_vectors() {
-  #[derive(serde::Deserialize)]
-  struct Vector {
-    address: String,
-
-    network: String,
-    spend: String,
-    view: String,
-
-    subaddress: bool,
-    integrated: bool,
-    payment_id: Option<[u8; 8]>,
-    guaranteed: bool,
-  }
-
-  let vectors = serde_json::from_str::<Vec<Vector>>(FEATURED_JSON).unwrap();
-  for vector in vectors {
-    let first = vector.address.chars().next().unwrap();
-    let network = match vector.network.as_str() {
-      "Mainnet" => {
-        assert_eq!(first, 'C');
-        Network::Mainnet
-      }
-      "Testnet" => {
-        assert_eq!(first, 'K');
-        Network::Testnet
-      }
-      "Stagenet" => {
-        assert_eq!(first, 'F');
-        Network::Stagenet
-      }
-      _ => panic!("Unknown network"),
-    };
-    let spend = decompress_point(hex::decode(vector.spend).unwrap().try_into().unwrap()).unwrap();
-    let view = decompress_point(hex::decode(vector.view).unwrap().try_into().unwrap()).unwrap();
-
-    let addr = MoneroAddress::from_str(network, &vector.address).unwrap();
-    assert_eq!(addr.spend, spend);
-    assert_eq!(addr.view, view);
-
-    assert_eq!(addr.is_subaddress(), vector.subaddress);
-    assert_eq!(vector.integrated, vector.payment_id.is_some());
-    assert_eq!(addr.payment_id(), vector.payment_id);
-    assert_eq!(addr.is_guaranteed(), vector.guaranteed);
-
-    assert_eq!(
-      MoneroAddress::new(
-        AddressMeta::new(
-          network,
-          AddressType::Featured {
-            subaddress: vector.subaddress,
-            payment_id: vector.payment_id,
-            guaranteed: vector.guaranteed
-          }
-        ),
-        spend,
-        view
-      )
-      .to_string(),
-      vector.address
-    );
-  }
-}
--- a/coins/monero/wallet/src/tests/mod.rs
+++ b/coins/monero/wallet/src/tests/mod.rs
@@ -1,2 +1 @@
-mod address;
 mod extra;
--- a/coins/monero/wallet/src/tests/vectors/featured_addresses.json
+++ b/coins/monero/wallet/src/tests/vectors/featured_addresses.json
@@ -1,230 +0,0 @@
-[
-  {
-    "address": "CjWdTpuDaZ69nTGxzm9YarR82YDYFECi1WaaREZTMy5yDsjaRX5bC3cbC3JpcrBPd7YYpjoWKuBMidgGaKBK5Jye2v3pYyUDn",
-    "network": "Mainnet",
-    "spend": "258dfe7eef9be934839f3b8e0d40e79035fe85879c0a9eb0d7372ae2deb0004c",
-    "view": "f91382373045f3cc69233254ab0406bc9e008707569ff9db4718654812d839df",
-    "subaddress": false,
-    "integrated": false,
-    "guaranteed": false
-  },
-  {
-    "address": "CjWdTpuDaZ69nTGxzm9YarR82YDYFECi1WaaREZTMy5yDsjaRX5bC3cbC3JpcrBPd7YYpjoWKuBMidgGaKBK5Jye2v3wfMHCy",
-    "network": "Mainnet",
-    "spend": "258dfe7eef9be934839f3b8e0d40e79035fe85879c0a9eb0d7372ae2deb0004c",
-    "view": "f91382373045f3cc69233254ab0406bc9e008707569ff9db4718654812d839df",
-    "subaddress": true,
-    "integrated": false,
-    "guaranteed": false
-  },
-  {
-    "address": "CjWdTpuDaZ69nTGxzm9YarR82YDYFECi1WaaREZTMy5yDsjaRX5bC3cbC3JpcrBPd7YYpjoWKuBMidgGaKBK5JyeeJTo4p5ayvj36PStM5AX",
-    "network": "Mainnet",
-    "spend": "258dfe7eef9be934839f3b8e0d40e79035fe85879c0a9eb0d7372ae2deb0004c",
-    "view": "f91382373045f3cc69233254ab0406bc9e008707569ff9db4718654812d839df",
-    "subaddress": false,
-    "integrated": true,
-    "payment_id": [46, 48, 134, 34, 245, 148, 243, 195],
-    "guaranteed": false
-  },
-  {
-    "address": "CjWdTpuDaZ69nTGxzm9YarR82YDYFECi1WaaREZTMy5yDsjaRX5bC3cbC3JpcrBPd7YYpjoWKuBMidgGaKBK5JyeeJWv5WqMCNE2hRs9rJfy",
-    "network": "Mainnet",
-    "spend": "258dfe7eef9be934839f3b8e0d40e79035fe85879c0a9eb0d7372ae2deb0004c",
-    "view": "f91382373045f3cc69233254ab0406bc9e008707569ff9db4718654812d839df",
-    "subaddress": true,
-    "integrated": true,
-    "payment_id": [153, 176, 98, 204, 151, 27, 197, 168],
-    "guaranteed": false
-  },
-  {
-    "address": "CjWdTpuDaZ69nTGxzm9YarR82YDYFECi1WaaREZTMy5yDsjaRX5bC3cbC3JpcrBPd7YYpjoWKuBMidgGaKBK5Jye2v4DwqwH1",
-    "network": "Mainnet",
-    "spend": "258dfe7eef9be934839f3b8e0d40e79035fe85879c0a9eb0d7372ae2deb0004c",
-    "view": "f91382373045f3cc69233254ab0406bc9e008707569ff9db4718654812d839df",
-    "subaddress": false,
-    "integrated": false,
-    "guaranteed": true
-  },
-  {
-    "address": "CjWdTpuDaZ69nTGxzm9YarR82YDYFECi1WaaREZTMy5yDsjaRX5bC3cbC3JpcrBPd7YYpjoWKuBMidgGaKBK5Jye2v4Pyz8bD",
-    "network": "Mainnet",
-    "spend": "258dfe7eef9be934839f3b8e0d40e79035fe85879c0a9eb0d7372ae2deb0004c",
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