(PHP ActiveX) Load an Ed25519 Private Key from Hex

Demonstrates how to load an Ed25519 private key from raw hex bytes.

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

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

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

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.PrivateKey')
$privKey = new COM("Chilkat.PrivateKey");

// We have the hexidecimal encoded bytes of the private key and public key:
$privKeyHex = 'd4ee72dbf913584ad5b6d8f1f769f8ad3afe7c28cbf1d4fbe097a88f44755842';
$pubKeyHex = '19bf44096984cdfe8541bac167dc3b96c85086aa30b6b6cb0c5c38ad703166e1';

// Load these values into the Chilkat private key object:
$success = $privKey->LoadEd25519($privKeyHex,$pubKeyHex);
if ($success == 0) {
    print $privKey->LastErrorText . "\n";
    exit;
}

// ---------------------------------------------------------------
// We don't actually need the public key.  If we pass an empty string for the public key,
// Chilkat will automatically compute it.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.PrivateKey')
$privKey2 = new COM("Chilkat.PrivateKey");
$success = $privKey2->LoadEd25519($privKeyHex,'');

// Let's get the public key to see that it computed the same value.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder')
$sbPubKeyHex = new COM("Chilkat.StringBuilder");
$privKeyHex = $privKey2->getRawHex($sbPubKeyHex);
print 'computed public key = ' . $sbPubKeyHex->getAsString() . "\n";

// The output should be:
// computed public key = 19bf44096984cdfe8541bac167dc3b96c85086aa30b6b6cb0c5c38ad703166e1

?>