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Add further FROST documentation

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Luke Parker 2022-09-29 06:02:43 -04:00
parent 8d9315b797
commit 7870084b9e
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7 changed files with 69 additions and 23 deletions
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28
coins/monero/src/lib.rs
View file

@ -1,19 +1,19 @@
#![cfg_attr(docsrs, feature(doc_auto_cfg))]
///! monero-serai: A modern Monero transaction library intended for usage in wallets. It prides
///! itself on accuracy, correctness, and removing common pit falls developers may face.
///!
///! monero-serai contains safety features, such as first-class acknowledgement of the burning bug,
///! yet also a high level API around creating transactions. monero-serai also offers a FROST-based
///! multisig, which is orders of magnitude more performant than Monero's.
///!
///! monero-serai was written for Serai, a decentralized exchange aiming to support Monero.
///! Despite this, monero-serai is intended to be a widely usable library, accurate to Monero.
///! monero-serai guarantees the functionality needed for Serai, yet will not deprive functionality
///! from other users, and may potentially leave Serai's umbrella at some point.
///!
///! Various legacy transaction formats are not currently implemented, yet monero-serai is still
///! increasing its support for various transaction types.
//! monero-serai: A modern Monero transaction library intended for usage in wallets. It prides
//! itself on accuracy, correctness, and removing common pit falls developers may face.
//!
//! monero-serai contains safety features, such as first-class acknowledgement of the burning bug,
//! yet also a high level API around creating transactions. monero-serai also offers a FROST-based
//! multisig, which is orders of magnitude more performant than Monero's.
//!
//! monero-serai was written for Serai, a decentralized exchange aiming to support Monero.
//! Despite this, monero-serai is intended to be a widely usable library, accurate to Monero.
//! monero-serai guarantees the functionality needed for Serai, yet will not deprive functionality
//! from other users, and may potentially leave Serai's umbrella at some point.
//!
//! Various legacy transaction formats are not currently implemented, yet monero-serai is still
//! increasing its support for various transaction types.
use lazy_static::lazy_static;
use rand_core::{RngCore, CryptoRng};

2
crypto/frost/Cargo.toml
View file

@ -43,7 +43,7 @@ dleq = { path = "../dleq", version = "0.1", features = ["serialize"] }
[dev-dependencies]
sha2 = "0.10"
dalek-ff-group = { path = "../dalek-ff-group" }
dalek-ff-group = { path = "../dalek-ff-group", version = "^0.1.2" }
[features]
dalek = ["sha2", "dalek-ff-group"]

15
crypto/frost/README.md
View file

@ -1,6 +1,13 @@
# Modular FROST
A modular implementation of FROST for any curve with a ff/group API. Notably,
beyond curve modularity, custom algorithms may be specified, providing support
for privacy coins. The provided Schnorr algorithm also has a modular HRAM due
to the variety in existence, enabling integration with existing systems.
A modular implementation of FROST for any curve with a ff/group API.
Additionally, custom algorithms may be specified so any signature reducible to
Schnorr-like may be used with FROST.
A Schnorr algorithm is provided, of the form (R, s) where `s = r + cx`, which
allows specifying the challenge format. This is intended to easily allow
integrating with existing systems.
This library offers ciphersuites compatible with the
[IETF draft](https://github.com/cfrg/draft-irtf-cfrg-frost). Currently, version
8 is supported.

6
crypto/frost/src/curve/dalek.rs
View file

@ -9,6 +9,8 @@ use crate::{curve::Curve, algorithm::Hram};
macro_rules! dalek_curve {
(
$feature: literal,
$Curve: ident,
$Hram: ident,
$Point: ident,
@ -19,6 +21,7 @@ macro_rules! dalek_curve {
) => {
use dalek_ff_group::$Point;
#[cfg_attr(docsrs, doc(cfg(feature = $feature)))]
#[derive(Clone, Copy, PartialEq, Eq, Debug, Zeroize)]
pub struct $Curve;
impl $Curve {
@ -46,6 +49,7 @@ macro_rules! dalek_curve {
}
}
#[cfg_attr(docsrs, doc(cfg(feature = $feature)))]
#[derive(Copy, Clone)]
pub struct $Hram;
impl Hram<$Curve> for $Hram {
@ -65,6 +69,7 @@ macro_rules! dalek_curve {
#[cfg(any(test, feature = "ristretto"))]
dalek_curve!(
"ristretto",
Ristretto,
IetfRistrettoHram,
RistrettoPoint,
@ -75,6 +80,7 @@ dalek_curve!(
#[cfg(feature = "ed25519")]
dalek_curve!(
"ed25519",
Ed25519,
IetfEd25519Hram,
EdwardsPoint,

15
crypto/frost/src/curve/kp256.rs
View file

@ -17,6 +17,8 @@ use crate::{curve::Curve, algorithm::Hram};
macro_rules! kp_curve {
(
$feature: literal,
$lib: ident,
$Curve: ident,
$Hram: ident,
@ -24,6 +26,7 @@ macro_rules! kp_curve {
$ID: literal,
$CONTEXT: literal
) => {
#[cfg_attr(docsrs, doc(cfg(feature = $feature)))]
#[derive(Clone, Copy, PartialEq, Eq, Debug, Zeroize)]
pub struct $Curve;
impl $Curve {
@ -76,6 +79,7 @@ macro_rules! kp_curve {
}
}
#[cfg_attr(docsrs, doc(cfg(feature = $feature)))]
#[derive(Clone)]
pub struct $Hram;
impl Hram<$Curve> for $Hram {
@ -88,7 +92,14 @@ macro_rules! kp_curve {
}
#[cfg(feature = "p256")]
kp_curve!(p256, P256, IetfP256Hram, b"P-256", b"FROST-P256-SHA256-v8");
kp_curve!("p256", p256, P256, IetfP256Hram, b"P-256", b"FROST-P256-SHA256-v8");
#[cfg(feature = "secp256k1")]
kp_curve!(k256, Secp256k1, IetfSecp256k1Hram, b"secp256k1", b"FROST-secp256k1-SHA256-v8");
kp_curve!(
"secp256k1",
k256,
Secp256k1,
IetfSecp256k1Hram,
b"secp256k1",
b"FROST-secp256k1-SHA256-v8"
);

21
crypto/frost/src/lib.rs
View file

@ -1,5 +1,18 @@
#![cfg_attr(docsrs, feature(doc_cfg))]
#![cfg_attr(docsrs, feature(doc_auto_cfg))]
//! A modular implementation of FROST for any curve with a ff/group API.
//! Additionally, custom algorithms may be specified so any signature reducible to
//! Schnorr-like may be used with FROST.
//!
//! A Schnorr algorithm is provided, of the form (R, s) where `s = r + cx`, which
//! allows specifying the challenge format. This is intended to easily allow
//! integrating with existing systems.
//!
//! This library offers ciphersuites compatible with the
//! [IETF draft](https://github.com/cfrg/draft-irtf-cfrg-frost). Currently, version
//! 8 is supported.
use core::fmt::{self, Debug};
use std::{io::Read, sync::Arc, collections::HashMap};
@ -14,15 +27,21 @@ use group::{
mod schnorr;
/// Curve trait and provided curves/HRAMs, forming various ciphersuites.
pub mod curve;
use curve::Curve;
/// Distributed key generation protocol.
pub mod key_gen;
/// Promote keys between curves.
pub mod promote;
/// Algorithm for the signing process.
pub mod algorithm;
/// Threshold signing protocol.
pub mod sign;
/// Tests for application-provided curves and algorithms.
pub mod tests;
// Validate a map of serialized values to have the expected included participants
@ -292,7 +311,7 @@ impl<C: Curve> Drop for FrostKeys<C> {
}
impl<C: Curve> ZeroizeOnDrop for FrostKeys<C> {}
// View of keys passable to algorithm implementations
/// View of keys passed to algorithm implementations.
#[derive(Clone, Zeroize)]
pub struct FrostView<C: Curve> {
group_key: C::G,

5
crypto/frost/src/tests/mod.rs
View file

@ -11,10 +11,13 @@ use crate::{
sign::{PreprocessMachine, SignMachine, SignatureMachine, AlgorithmMachine},
};
// Test suites for public usage
/// Curve tests.
pub mod curve;
/// Schnorr signature tests.
pub mod schnorr;
/// Promotion tests.
pub mod promote;
/// Vectorized test suite to ensure consistency.
pub mod vectors;
// Literal test definitions to run during `cargo test`