Get the repo to compile again

coins/monero/wallet/util/Cargo.toml

@@ -0,0 +1,51 @@
+[package]
+name = "monero-wallet-util"
+version = "0.1.0"
+description = "Additional utility functions for monero-wallet"
+license = "MIT"
+repository = "https://github.com/serai-dex/serai/tree/develop/coins/monero/wallet/util"
+authors = ["Luke Parker <lukeparker5132@gmail.com>"]
+edition = "2021"
+rust-version = "1.79"
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]
+
+[lints]
+workspace = true
+
+[dependencies]
+std-shims = { path = "../../../../common/std-shims", version = "^0.1.1", default-features = false }
+
+thiserror = { version = "1", default-features = false, optional = true }
+
+zeroize = { version = "^1.5", default-features = false, features = ["zeroize_derive"] }
+rand_core = { version = "0.6", default-features = false }
+
+monero-wallet = { path = "..", default-features = false }
+
+monero-seed = { path = "../seed", default-features = false }
+polyseed = { path = "../polyseed", default-features = false }
+
+[dev-dependencies]
+hex = { version = "0.4", default-features = false, features = ["std"] }
+curve25519-dalek = { version = "4", default-features = false, features = ["alloc", "zeroize"] }
+
+[features]
+std = [
+  "std-shims/std",
+
+  "thiserror",
+
+  "zeroize/std",
+  "rand_core/std",
+
+  "monero-wallet/std",
+
+  "monero-seed/std",
+  "polyseed/std",
+]
+compile-time-generators = ["monero-wallet/compile-time-generators"]
+multisig = ["monero-wallet/multisig", "std"]
+default = ["std", "compile-time-generators"]

coins/monero/wallet/util/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2022-2024 Luke Parker
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

coins/monero/wallet/util/README.md

@@ -6,6 +6,9 @@ This library is isolated as it adds a notable amount of dependencies to the
 tree, and to be a subject to a distinct versioning policy. This library may
 more frequently undergo breaking API changes.
 
+This library is usable under no-std when the `std` feature (on by default) is
+disabled.
+
 ### Features
 
 - Support for Monero's seed algorithm

coins/monero/wallet/util/src/lib.rs

@@ -1,2 +1,9 @@
-pub use monero_seed as seed;
-pub use monero_polyseed as seed;
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+#![doc = include_str!("../README.md")]
+#![deny(missing_docs)]
+#![cfg_attr(not(feature = "std"), no_std)]
+
+pub use monero_wallet::*;
+
+/// Seed creation and parsing functionality.
+pub mod seed;

coins/monero/wallet/util/src/seed.rs

@@ -0,0 +1,150 @@
+use core::fmt;
+use std_shims::string::String;
+
+use zeroize::{Zeroize, ZeroizeOnDrop, Zeroizing};
+use rand_core::{RngCore, CryptoRng};
+
+pub use monero_seed as original;
+pub use polyseed;
+
+use original::{SeedError as OriginalSeedError, Seed as OriginalSeed};
+use polyseed::{PolyseedError, Polyseed};
+
+/// An error from working with seeds.
+#[derive(Clone, Copy, PartialEq, Eq, Debug)]
+#[cfg_attr(feature = "std", derive(thiserror::Error))]
+pub enum SeedError {
+  /// The seed was invalid.
+  #[cfg_attr(feature = "std", error("invalid seed"))]
+  InvalidSeed,
+  /// The entropy was invalid.
+  #[cfg_attr(feature = "std", error("invalid entropy"))]
+  InvalidEntropy,
+  /// The checksum did not match the data.
+  #[cfg_attr(feature = "std", error("invalid checksum"))]
+  InvalidChecksum,
+  /// Unsupported features were enabled.
+  #[cfg_attr(feature = "std", error("unsupported features"))]
+  UnsupportedFeatures,
+}
+
+impl From<OriginalSeedError> for SeedError {
+  fn from(error: OriginalSeedError) -> SeedError {
+    match error {
+      OriginalSeedError::DeprecatedEnglishWithChecksum | OriginalSeedError::InvalidChecksum => {
+        SeedError::InvalidChecksum
+      }
+      OriginalSeedError::InvalidSeed => SeedError::InvalidSeed,
+    }
+  }
+}
+
+impl From<PolyseedError> for SeedError {
+  fn from(error: PolyseedError) -> SeedError {
+    match error {
+      PolyseedError::UnsupportedFeatures => SeedError::UnsupportedFeatures,
+      PolyseedError::InvalidEntropy => SeedError::InvalidEntropy,
+      PolyseedError::InvalidSeed => SeedError::InvalidSeed,
+      PolyseedError::InvalidChecksum => SeedError::InvalidChecksum,
+    }
+  }
+}
+
+/// The type of the seed.
+#[derive(Clone, Copy, PartialEq, Eq, Debug)]
+pub enum SeedType {
+  /// The seed format originally used by Monero,
+  Original(monero_seed::Language),
+  /// Polyseed.
+  Polyseed(polyseed::Language),
+}
+
+/// A seed, internally either the original format or a Polyseed.
+#[derive(Clone, PartialEq, Eq, Zeroize, ZeroizeOnDrop)]
+pub enum Seed {
+  /// The originally formatted seed.
+  Original(OriginalSeed),
+  /// A Polyseed.
+  Polyseed(Polyseed),
+}
+
+impl fmt::Debug for Seed {
+  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    match self {
+      Seed::Original(_) => f.debug_struct("Seed::Original").finish_non_exhaustive(),
+      Seed::Polyseed(_) => f.debug_struct("Seed::Polyseed").finish_non_exhaustive(),
+    }
+  }
+}
+
+impl Seed {
+  /// Create a new seed.
+  pub fn new<R: RngCore + CryptoRng>(rng: &mut R, seed_type: SeedType) -> Seed {
+    match seed_type {
+      SeedType::Original(lang) => Seed::Original(OriginalSeed::new(rng, lang)),
+      SeedType::Polyseed(lang) => Seed::Polyseed(Polyseed::new(rng, lang)),
+    }
+  }
+
+  /// Parse a seed from a string.
+  pub fn from_string(seed_type: SeedType, words: Zeroizing<String>) -> Result<Seed, SeedError> {
+    match seed_type {
+      SeedType::Original(lang) => Ok(OriginalSeed::from_string(lang, words).map(Seed::Original)?),
+      SeedType::Polyseed(lang) => Ok(Polyseed::from_string(lang, words).map(Seed::Polyseed)?),
+    }
+  }
+
+  /// Create a seed from entropy.
+  ///
+  /// A birthday may be optionally provided, denoted in seconds since the epoch. For
+  /// SeedType::Original, it will be ignored. For SeedType::Polyseed, it'll be embedded into the
+  /// seed.
+  ///
+  /// For SeedType::Polyseed, the last 13 bytes of `entropy` must be 0.
+  // TODO: Return Result, not Option
+  pub fn from_entropy(
+    seed_type: SeedType,
+    entropy: Zeroizing<[u8; 32]>,
+    birthday: Option<u64>,
+  ) -> Option<Seed> {
+    match seed_type {
+      SeedType::Original(lang) => OriginalSeed::from_entropy(lang, entropy).map(Seed::Original),
+      SeedType::Polyseed(lang) => {
+        Polyseed::from(lang, 0, birthday.unwrap_or(0), entropy).ok().map(Seed::Polyseed)
+      }
+    }
+  }
+
+  /// Converts the seed to a string.
+  pub fn to_string(&self) -> Zeroizing<String> {
+    match self {
+      Seed::Original(seed) => seed.to_string(),
+      Seed::Polyseed(seed) => seed.to_string(),
+    }
+  }
+
+  /// Get the entropy for this seed.
+  pub fn entropy(&self) -> Zeroizing<[u8; 32]> {
+    match self {
+      Seed::Original(seed) => seed.entropy(),
+      Seed::Polyseed(seed) => seed.entropy().clone(),
+    }
+  }
+
+  /// Get the key derived from this seed.
+  pub fn key(&self) -> Zeroizing<[u8; 32]> {
+    match self {
+      // Original does not differentiate between its entropy and its key
+      Seed::Original(seed) => seed.entropy(),
+      Seed::Polyseed(seed) => seed.key(),
+    }
+  }
+
+  /// Get the birthday of this seed, denoted in seconds since the epoch.
+  pub fn birthday(&self) -> u64 {
+    match self {
+      Seed::Original(_) => 0,
+      Seed::Polyseed(seed) => seed.birthday(),
+    }
+  }
+}