Simplify the rpcwallet example using the improved keys traits

This commit is contained in:
Alekos Filini 2022-04-13 12:56:43 +02:00
parent c350064dae
commit 44758f9483
No known key found for this signature in database
GPG Key ID: 431401E4A4530061

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@ -7,7 +7,6 @@
// licenses. // licenses.
use bdk::bitcoin::secp256k1::Secp256k1; use bdk::bitcoin::secp256k1::Secp256k1;
use bdk::bitcoin::util::bip32::ExtendedPrivKey;
use bdk::bitcoin::Amount; use bdk::bitcoin::Amount;
use bdk::bitcoin::Network; use bdk::bitcoin::Network;
use bdk::bitcoincore_rpc::RpcApi; use bdk::bitcoincore_rpc::RpcApi;
@ -16,7 +15,7 @@ use bdk::blockchain::rpc::{Auth, RpcBlockchain, RpcConfig};
use bdk::blockchain::ConfigurableBlockchain; use bdk::blockchain::ConfigurableBlockchain;
use bdk::keys::bip39::{Language, Mnemonic, WordCount}; use bdk::keys::bip39::{Language, Mnemonic, WordCount};
use bdk::keys::{DerivableKey, ExtendedKey, GeneratableKey, GeneratedKey}; use bdk::keys::{DerivableKey, GeneratableKey, GeneratedKey};
use bdk::miniscript::miniscript::Segwitv0; use bdk::miniscript::miniscript::Segwitv0;
@ -85,8 +84,8 @@ fn main() -> Result<(), Box<dyn Error>> {
// create unique wallet name. // create unique wallet name.
// This is a special utility function exposed via `bdk::wallet_name_from_descriptor()` // This is a special utility function exposed via `bdk::wallet_name_from_descriptor()`
let wallet_name = wallet_name_from_descriptor( let wallet_name = wallet_name_from_descriptor(
Bip84(xprv, KeychainKind::External), Bip84(xprv.clone(), KeychainKind::External),
Some(Bip84(xprv, KeychainKind::Internal)), Some(Bip84(xprv.clone(), KeychainKind::Internal)),
Network::Regtest, Network::Regtest,
&Secp256k1::new(), &Secp256k1::new(),
)?; )?;
@ -112,8 +111,8 @@ fn main() -> Result<(), Box<dyn Error>> {
// Combine Database + Descriptor to create the final wallet // Combine Database + Descriptor to create the final wallet
let wallet = Wallet::new( let wallet = Wallet::new(
Bip84(xprv, KeychainKind::External), Bip84(xprv.clone(), KeychainKind::External),
Some(Bip84(xprv, KeychainKind::Internal)), Some(Bip84(xprv.clone(), KeychainKind::Internal)),
Network::Regtest, Network::Regtest,
database, database,
)?; )?;
@ -216,18 +215,15 @@ fn main() -> Result<(), Box<dyn Error>> {
// Helper function demonstrating privatekey extraction using bip39 mnemonic // Helper function demonstrating privatekey extraction using bip39 mnemonic
// The mnemonic can be shown to user to safekeeping and the same wallet // The mnemonic can be shown to user to safekeeping and the same wallet
// private descriptors can be recreated from it. // private descriptors can be recreated from it.
fn generate_random_ext_privkey() -> Result<ExtendedPrivKey, Box<dyn Error>> { fn generate_random_ext_privkey() -> Result<impl DerivableKey<Segwitv0> + Clone, Box<dyn Error>> {
// a Bip39 passphrase can be set optionally // a Bip39 passphrase can be set optionally
let password = Some("random password".to_string()); let password = Some("random password".to_string());
// Generate a random mnemonic, and use that to create an Extended PrivateKey // Generate a random mnemonic, and use that to create a "DerivableKey"
let mnemonic: GeneratedKey<_, Segwitv0> = let mnemonic: GeneratedKey<_, _> = Mnemonic::generate((WordCount::Words12, Language::English))
Mnemonic::generate((WordCount::Words12, Language::English)) .map_err(|e| e.expect("Unknown Error"))?;
.map_err(|e| e.expect("Unknown Error"))?;
let mnemonic = mnemonic.into_key(); // `Ok(mnemonic)` would also work if there's no passphrase and it would
let xkey: ExtendedKey = (mnemonic, password).into_extended_key()?; // yield the same result as this construct with `password` = `None`.
let xprv = xkey Ok((mnemonic, password))
.into_xprv(Network::Regtest)
.expect("Expected Private Key");
Ok(xprv)
} }