(PHP Extension) Generate an Ed25519 Key Pair

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

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

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<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

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

$eddsa = new CkEdDSA();
$prng = new CkPrng();
$privKey = new CkPrivateKey();

// Generates a new eddsa key and stores it in privKey.
$success = $eddsa->GenEd25519Key($prng,$privKey);
if ($success == false) {
    print $eddsa->lastErrorText() . "\n";
    exit;
}

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

$json = new CkJsonObject();
$json->Load($jwk);
$json->put_EmitCompact(false);
print $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.

?>