Alloy Book

Example: sign_message

Example

To run this example:

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

//! Example of signing a message with a signer.

use alloy::signers::{local::PrivateKeySigner, Signer};
use eyre::Result;

#[tokio::main]
async fn main() -> Result<()> {
    // Set up a random signer.
    let signer = PrivateKeySigner::random();

    // Optionally, the wallet's chain id can be set, in order to use EIP-155
    // replay protection with different chains.
    let signer = signer.with_chain_id(Some(1337));

    // The message to sign.
    let message = b"hello";

    // Sign the message asynchronously with the signer.
    let signature = signer.sign_message(message).await?;

    println!("Signature produced by {}: {:?}", signer.address(), signature);
    println!("Signature recovered address: {}", signature.recover_address_from_msg(&message[..])?);

    Ok(())
}

Find the source code on Github here.