Rust

Load EC Public Key from X,Y Values

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Demonstrates how to load an EC public key from X and Y values. Rust

// We have the following x and y values in base64 (for an EC point on the P-256 curve).
let x = "Dn7uB1O7kgk74G6qfQwFJESeDnxO6lLjGZFWZJE16tw".to_string();
let y = "iOWA5DInzK6nuUGvHJbMVq1Dpj248FqSV2teN3HzmhU".to_string();

// Build a JWK that looks like this:

// {
//   "kty": "EC",
//   "crv": "P-256",
//   "x": "Dn7uB1O7kgk74G6qfQwFJESeDnxO6lLjGZFWZJE16tw",
//   "y": "iOWA5DInzK6nuUGvHJbMVq1Dpj248FqSV2teN3HzmhU"
// }

let json = chilkat::JsonObject::new();
let _ = json.update_string("kty", "EC");
let _ = json.update_string("crv", "P-256");
let _ = json.update_string("x", &x);
let _ = json.update_string("y", &y);

// Load from the JWK.
let pubkey = chilkat::PublicKey::new();
if pubkey.load_from_string(&json.emit().unwrap_or_default()).is_err() {
    println!("{}", pubkey.last_error_text());
    return;
}

println!("Success.");