Alloy Book

Example: mnemonic_signer

Example

To run this example:

• Clone the examples repository: git clone git@github.com:alloy-rs/examples.git
• Run: cargo run --example mnemonic_signer

//! Example of using `MnemonicBuilder` to access a wallet from a mnemonic phrase.

use alloy::signers::local::{coins_bip39::English, MnemonicBuilder};
use eyre::Result;

#[tokio::main]
async fn main() -> Result<()> {
    let phrase = "work man father plunge mystery proud hollow address reunion sauce theory bonus";
    let index = 0u32;
    let password = "TREZOR123";

    // Access mnemonic phrase with password.
    // Child key at derivation path: m/44'/60'/0'/0/{index}.
    let wallet = MnemonicBuilder::<English>::default()
        .phrase(phrase)
        .index(index)?
        // Use this if your mnemonic is encrypted.
        .password(password)
        .build()?;

    println!("Wallet: {}", wallet.address());

    // Generate a random wallet (24 word phrase) at custom derivation path.
    let wallet = MnemonicBuilder::<English>::default()
        .word_count(24)
        .derivation_path("m/44'/60'/0'/2/1")?
        // Optionally add this if you want the generated mnemonic to be written
        // to a file `.write_to(path)`.
        .build_random()?;

    println!("Random wallet: {}", wallet.address());

    Ok(())
}

Find the source code on Github here.