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Add HDKeyOrigin and SIngleKeyOrigin for Signer #107

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Add HDKeyOrigin and SIngleKeyOrigin for Signer #107

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de219be
sdk: add KeyProvider trait to move logic for determining keys into se…
ikripaka Jul 1, 2026
d2a72a0
sdk: rename structs, fix lints
ikripaka Jul 1, 2026
6ef400e
sdk: move key origin implementation to file
ikripaka Jul 2, 2026
d030d56
sdk: add space to separate imports
ikripaka Jul 2, 2026
74f0420
sdk: adapt interface due to possible absence of blinding key
ikripaka Jul 2, 2026
d286323
sdk: change panic in `SingleKey::unblind` to return an empty vec
ikripaka Jul 6, 2026
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4 changes: 4 additions & 0 deletions crates/regtest/src/error.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@ use std::io;

use smplx_sdk::provider::RpcError;
use smplx_sdk::signer::SignerError;
use smplx_sdk::signer::error::KeyOriginError;

#[derive(thiserror::Error, Debug)]
pub enum RegtestError {
Expand All @@ -11,6 +12,9 @@ pub enum RegtestError {
#[error(transparent)]
Signer(#[from] SignerError),

#[error(transparent)]
KeyOrigin(#[from] KeyOriginError),

#[error("Failed to terminate elements")]
ElementsTermination(),

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12 changes: 8 additions & 4 deletions crates/regtest/src/regtest.rs
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Expand Up @@ -3,7 +3,7 @@ use std::time::Duration;
use smplx_sdk::provider::ElementsRpc;
use smplx_sdk::provider::SimplexProvider;
use smplx_sdk::provider::SimplicityNetwork;
use smplx_sdk::signer::Signer;
use smplx_sdk::signer::{HDKey, KeyOrigin, Signer};
use smplx_sdk::utils::btc2sat;

use super::RegtestConfig;
Expand All @@ -23,7 +23,7 @@ impl Regtest {
///
/// # Panics
/// Panics if the background indexer (`electrs`) fails to index the unspent outputs within the timeout window (10 seconds).
pub fn from_config(config: &RegtestConfig) -> Result<(RegtestClient, Signer), RegtestError> {
pub fn from_config(config: &RegtestConfig) -> Result<(RegtestClient, Signer<HDKey>), RegtestError> {
let client = RegtestClient::new(config);

let provider = Box::new(SimplexProvider::new(
Expand All @@ -33,14 +33,18 @@ impl Regtest {
SimplicityNetwork::default_regtest(),
));

let signer = Signer::new(config.mnemonic.as_str(), provider);
let signer = Signer::new(HDKey::new(config.mnemonic.as_str())?, provider);

Self::prepare_signer(&client, &signer, config.bitcoins)?;

Ok((client, signer))
}

fn prepare_signer(client: &RegtestClient, signer: &Signer, bitcoins: u64) -> Result<(), RegtestError> {
fn prepare_signer<K: KeyOrigin>(
client: &RegtestClient,
signer: &Signer<K>,
bitcoins: u64,
) -> Result<(), RegtestError> {
let rpc_provider = ElementsRpc::new(client.rpc_url(), client.auth())?;

rpc_provider.generate_blocks(1)?;
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