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Do the minimal amount of work for dkg to compile under no-std

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The Substrate runtime requires access to the MuSig key aggregation function.

\#279 related.
This commit is contained in:
Luke Parker
2023-05-12 23:24:47 -04:00
parent 4d50b6892c
commit 84c2d73093
6 changed files with 462 additions and 429 deletions
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15
crypto/dkg/src/musig.rs
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@@ -1,16 +1,24 @@
#[cfg(feature = "std")]
use core::ops::Deref;
use std::collections::{HashSet, HashMap};
use std_shims::collections::HashSet;
#[cfg(feature = "std")]
use std_shims::collections::HashMap;
#[cfg(feature = "std")]
use zeroize::Zeroizing;
use transcript::{Transcript, RecommendedTranscript};
#[cfg(feature = "std")]
use ciphersuite::group::ff::Field;
use ciphersuite::{
group::{ff::Field, Group, GroupEncoding},
group::{Group, GroupEncoding},
Ciphersuite,
};
use crate::{Participant, DkgError, ThresholdParams, ThresholdCore, lagrange};
use crate::DkgError;
#[cfg(feature = "std")]
use crate::{Participant, ThresholdParams, ThresholdCore, lagrange};
fn check_keys<C: Ciphersuite>(keys: &[C::G]) -> Result<u16, DkgError<()>> {
if keys.is_empty() {
@@ -59,6 +67,7 @@ pub fn musig_key<C: Ciphersuite>(keys: &[C::G]) -> Result<C::G, DkgError<()>> {
/// A n-of-n non-interactive DKG which does not guarantee the usability of the resulting key.
///
/// Creating an aggregate key with a list containing duplicated public keys returns an error.
#[cfg(feature = "std")]
pub fn musig<C: Ciphersuite>(
private_key: &Zeroizing<C::F>,
keys: &[C::G],