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Bitcoin Key Gen

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This commit is contained in:
Luke Parker
2024-09-11 03:23:00 -04:00
parent b61ba9d1bb
commit a8159e9070
5 changed files with 51 additions and 20 deletions
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2
processor/bitcoin/Cargo.toml
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@@ -25,6 +25,7 @@ borsh = { version = "1", default-features = false, features = ["std", "derive",
transcript = { package = "flexible-transcript", path = "../../crypto/transcript", default-features = false, features = ["std", "recommended"] }
ciphersuite = { path = "../../crypto/ciphersuite", default-features = false, features = ["std", "secp256k1"] }
dkg = { path = "../../crypto/dkg", default-features = false, features = ["std", "evrf-secp256k1"] }
frost = { package = "modular-frost", path = "../../crypto/frost", default-features = false }
secp256k1 = { version = "0.29", default-features = false, features = ["std", "global-context", "rand-std"] }
@@ -41,6 +42,7 @@ serai-env = { path = "../../common/env" }
serai-client = { path = "../../substrate/client", default-features = false, features = ["bitcoin"] }
messages = { package = "serai-processor-messages", path = "../messages" }
key-gen = { package = "serai-processor-key-gen", path = "../key-gen" }
primitives = { package = "serai-processor-primitives", path = "../primitives" }
scheduler = { package = "serai-processor-scheduler-primitives", path = "../scheduler/primitives" }

26
processor/bitcoin/src/key_gen.rs Normal file
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@@ -0,0 +1,26 @@
use ciphersuite::{group::GroupEncoding, Ciphersuite, Secp256k1};
use frost::ThresholdKeys;
use key_gen::KeyGenParams;
use crate::scan::scanner;
pub(crate) struct KeyGen;
impl KeyGenParams for KeyGen {
const ID: &'static str = "Bitcoin";
type ExternalNetworkCurve = Secp256k1;
fn tweak_keys(keys: &mut ThresholdKeys<Self::ExternalNetworkCurve>) {
*keys = bitcoin_serai::wallet::tweak_keys(keys);
// Also create a scanner to assert these keys, and all expected paths, are usable
scanner(keys.group_key());
}
fn encode_key(key: <Self::ExternalNetworkCurve as Ciphersuite>::G) -> Vec<u8> {
let key = key.to_bytes();
let key: &[u8] = key.as_ref();
// Skip the parity encoding as we know this key is even
key[1 ..].to_vec()
}
}

7
processor/bitcoin/src/main.rs
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@@ -13,6 +13,7 @@ pub(crate) use primitives::*;
mod scan;
// App-logic trait satisfactions
mod key_gen;
mod rpc;
mod scheduler;
@@ -224,12 +225,6 @@ impl Network for Bitcoin {
// aggregation TX
const COST_TO_AGGREGATE: u64 = 800;
fn tweak_keys(keys: &mut ThresholdKeys<Self::Curve>) {
*keys = tweak_keys(keys);
// Also create a scanner to assert these keys, and all expected paths, are usable
scanner(keys.group_key());
}
#[cfg(test)]
async fn get_block_number(&self, id: &[u8; 32]) -> usize {
self.rpc.get_block_number(id).await.unwrap()