Rust

Export a Private Key as a JWK

Demonstrates the Chilkat PrivateKey.GetJwk method, which exports the key as a compact JWK (JSON Web Key). It takes no arguments; binary values use Base64url without padding.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: JWK is the JSON key format used across modern web security — JWT, OAuth, OpenID Connect. Exporting to it lets you publish a key into a JWK Set or hand it to a web framework that speaks JWK. Note this is the private JWK: it includes the private parameters (d and, for RSA, the CRT values), so it is highly sensitive — publish only the public JWK derived from ToPublicKey when sharing.

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Rust


// Load a private key to export.
let priv_key = chilkat::PrivateKey::new();
if priv_key.load_pem_file("qa_data/private.pem").is_err() {
    println!("{}", priv_key.last_error_text());
    return;
}

// Export as a compact JWK (JSON Web Key).  Binary values use Base64url without padding.
let Ok(jwk) = priv_key.get_jwk() else {
    println!("{}", priv_key.last_error_text());
    return;
};

println!("{}", jwk);