MMXX Identity.

use karoowa_sdk::{NodeClient, Wallet};

// User generates (or recovers) an Ed25519 wallet client-side
let wallet = Wallet::generate();
wallet.save_to("./user.key")?;

// Server issues a signed challenge for wallet sign-in
let challenge = client.identity().issue_challenge(wallet.address()).await?;
let signature = wallet.sign(&challenge.nonce);

// Verify and open a session bound to the wallet address
let session = client
    .identity()
    .verify(challenge.id, signature)
    .await?;

println!("signed in as {}", session.subject);