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Finally make modular-frost work with alloc alone

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Carries the update to `frost-schnorrkel` and `bitcoin-serai`.
This commit is contained in:
Luke Parker
2025-09-15 23:16:11 -04:00
parent 2be69b23b1
commit ddb8e1398e
20 changed files with 280 additions and 204 deletions
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47
networks/bitcoin/src/wallet/mod.rs
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@@ -1,36 +1,31 @@
#[allow(unused_imports)]
use std_shims::prelude::*;
use std_shims::{
vec::Vec,
collections::HashMap,
io::{self, Write},
io::{self, Read, Write},
};
#[cfg(feature = "std")]
use std::io::{Read, BufReader};
use k256::{
elliptic_curve::sec1::{Tag, ToEncodedPoint},
Scalar, ProjectivePoint,
};
#[cfg(feature = "std")]
use frost::{
curve::{WrappedGroup, GroupIo, Secp256k1},
ThresholdKeys,
};
use bitcoin::{
consensus::encode::serialize, key::TweakedPublicKey, OutPoint, ScriptBuf, TxOut, Transaction,
Block,
hashes::Hash,
key::TweakedPublicKey,
TapTweakHash,
consensus::encode::{Decodable, serialize},
OutPoint, ScriptBuf, TxOut, Transaction, Block,
};
#[cfg(feature = "std")]
use bitcoin::{hashes::Hash, consensus::encode::Decodable, TapTweakHash};
use crate::crypto::x_only;
#[cfg(feature = "std")]
use crate::crypto::needs_negation;
use crate::crypto::{x_only, needs_negation};
#[cfg(feature = "std")]
mod send;
#[cfg(feature = "std")]
pub use send::*;
/// Tweak keys to ensure they're usable with Bitcoin's Taproot upgrade.
@@ -42,7 +37,6 @@ pub use send::*;
/// After adding an unspendable script path, the key is negated if odd.
///
/// This has a neligible probability of returning keys whose group key is the point at infinity.
#[cfg(feature = "std")]
pub fn tweak_keys(keys: ThresholdKeys<Secp256k1>) -> ThresholdKeys<Secp256k1> {
// Adds the unspendable script path per
// https://github.com/bitcoin/bips/blob/master/bip-0341.mediawiki#cite_note-23
@@ -118,18 +112,23 @@ impl ReceivedOutput {
}
/// Read a ReceivedOutput from a generic satisfying Read.
#[cfg(feature = "std")]
pub fn read<R: Read>(r: &mut R) -> io::Result<ReceivedOutput> {
let offset = Secp256k1::read_F(r)?;
let output;
let outpoint;
{
let mut buf_r = BufReader::with_capacity(0, r);
output =
TxOut::consensus_decode(&mut buf_r).map_err(|_| io::Error::other("invalid TxOut"))?;
outpoint =
OutPoint::consensus_decode(&mut buf_r).map_err(|_| io::Error::other("invalid OutPoint"))?;
struct BitcoinRead<R: Read>(R);
impl<R: Read> bitcoin::io::Read for BitcoinRead<R> {
fn read(&mut self, buf: &mut [u8]) -> bitcoin::io::Result<usize> {
self
.0
.read(buf)
.map_err(|e| bitcoin::io::Error::new(bitcoin::io::ErrorKind::Other, e.to_string()))
}
}
let mut r = BitcoinRead(r);
let output = TxOut::consensus_decode(&mut r).map_err(|_| io::Error::other("invalid TxOut"))?;
let outpoint =
OutPoint::consensus_decode(&mut r).map_err(|_| io::Error::other("invalid OutPoint"))?;
Ok(ReceivedOutput { offset, output, outpoint })
}