PHP

Load a Private Key from a File (Any Format)

Demonstrates the Chilkat PrivateKey.LoadAnyFormatFile method, which loads a private key from a file by inspecting its contents. The first argument is the file path and the second is the password (used if the detected key is encrypted).

Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own key file.

Background: This is the most convenient loader of all — point it at a key file whose format you do not know and it detects and loads it, whether PKCS #1/#8, encrypted PKCS #8, PEM, JWK, XML, or a Microsoft format. It is the pragmatic default for applications that accept keys from users or varied sources; use a format-specific loader only when you want to enforce a particular expected format.

Chilkat PHP Downloads

Download Chilkat for PHP

Chilkat2 PHP

<?php

use Chilkat2\PrivateKey;

// Demonstrates the PrivateKey.LoadAnyFormatFile method, which loads a private key from a file by
// inspecting its contents.  The 1st argument is the file path and the 2nd is the password (used
// if the detected key is encrypted).

$privKey = new PrivateKey();

// The key password is not hard-coded in a real application; obtain it from an interactive
// prompt, environment variable, or a secrets vault.
$password = 'myKeyPassword';

// This is the most convenient loader when the file's exact format is unknown: Chilkat inspects
// the content and handles PKCS #1/#8, encrypted PKCS #8, PEM, JWK, XML, Microsoft formats, etc.
try {
    $privKey->LoadAnyFormatFile('qa_data/some_private_key', $password);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

echo 'Loaded a ', $privKey->KeyType, " private key.\n";