PHP

Generate an Ed25519 Key Pair

See more Ed25519 Examples

Demonstrates how to generate a new Ed25519 public/private key pair.

Note: This example requires Chilkat v9.5.0.83 or greater.

Chilkat2 PHP

<?php

use Chilkat2\EdDSA;
use Chilkat2\JsonObject;
use Chilkat2\PrivateKey;
use Chilkat2\Prng;

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$eddsa = new EdDSA();
$prng = new Prng();
$privKey = new PrivateKey();

// Generates a new eddsa key and stores it in privKey.
try {
    $eddsa->GenEd25519Key($prng, $privKey);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

// Examine the ed25519 key in JWK format;
$jwk = $privKey->GetJwk();

$json = new JsonObject();
$json->Load($jwk);
$json->EmitCompact = false;
echo $json->Emit(), "\n";

// Sample output:
// {
//   "kty": "OKP",
//   "crv": "Ed25519",
//   "x": "SE2Kne5xt51z1eciMH2T2ftDQp96Gl6FhY6zSQujiP0",
//   "d": "O-eRXewadF0sNyB0U9omcnt8Qg2ZmeK3WSXPYgqe570",
//   "use": "sig"
// }

// In the above JWK, x is the public key, y is the private key.
// Both are 32 bytes and are base64-url encoded.