<?php
/**
 * Cryptography key holder.
 *
 * @author      Julián Gutiérrez <juliangut@gmail.com>
 * @copyright   Copyright (c) Alex Bilbie
 * @license     http://mit-license.org/
 *
 * @link        https://github.com/thephpleague/oauth2-server
 */

namespace League\OAuth2\Server;

use LogicException;

class CryptKey
{
    /** @deprecated left for backward compatibility check */
    const RSA_KEY_PATTERN =
        '/^(-----BEGIN (RSA )?(PUBLIC|PRIVATE) KEY-----)\R.*(-----END (RSA )?(PUBLIC|PRIVATE) KEY-----)\R?$/s';

    private const FILE_PREFIX = 'file://';

    /**
     * @var string Key contents
     */
    protected $keyContents;

    /**
     * @var string
     */
    protected $keyPath;

    /**
     * @var null|string
     */
    protected $passPhrase;

    /**
     * @param string      $keyPath
     * @param null|string $passPhrase
     * @param bool        $keyPermissionsCheck
     */
    public function __construct($keyPath, $passPhrase = null, $keyPermissionsCheck = true)
    {
        $this->passPhrase = $passPhrase;

        if (\strpos($keyPath, self::FILE_PREFIX) !== 0 && $this->isValidKey($keyPath, $this->passPhrase ?? '')) {
            $this->keyContents = $keyPath;
            $this->keyPath = '';
            // There's no file, so no need for permission check.
            $keyPermissionsCheck = false;
        } elseif (\is_file($keyPath)) {
            if (\strpos($keyPath, self::FILE_PREFIX) !== 0) {
                $keyPath = self::FILE_PREFIX . $keyPath;
            }

            if (!\is_readable($keyPath)) {
                throw new LogicException(\sprintf('Key path "%s" does not exist or is not readable', $keyPath));
            }
            $this->keyContents = \file_get_contents($keyPath);
            $this->keyPath = $keyPath;
            if (!$this->isValidKey($this->keyContents, $this->passPhrase ?? '')) {
                throw new LogicException('Unable to read key from file ' . $keyPath);
            }
        } else {
            throw new LogicException('Invalid key supplied');
        }

        if ($keyPermissionsCheck === true) {
            // Verify the permissions of the key
            $keyPathPerms = \decoct(\fileperms($this->keyPath) & 0777);
            if (\in_array($keyPathPerms, ['400', '440', '600', '640', '660'], true) === false) {
                \trigger_error(
                    \sprintf(
                        'Key file "%s" permissions are not correct, recommend changing to 600 or 660 instead of %s',
                        $this->keyPath,
                        $keyPathPerms
                    ),
                    E_USER_NOTICE
                );
            }
        }
    }

    /**
     * Get key contents
     *
     * @return string Key contents
     */
    public function getKeyContents(): string
    {
        return $this->keyContents;
    }

    /**
     * Validate key contents.
     *
     * @param string $contents
     * @param string $passPhrase
     *
     * @return bool
     */
    private function isValidKey($contents, $passPhrase)
    {
        $pkey = \openssl_pkey_get_private($contents, $passPhrase) ?: \openssl_pkey_get_public($contents);
        if ($pkey === false) {
            return false;
        }
        $details = \openssl_pkey_get_details($pkey);

        return $details !== false && \in_array(
            $details['type'] ?? -1,
            [OPENSSL_KEYTYPE_RSA, OPENSSL_KEYTYPE_EC],
            true
        );
    }

    /**
     * Retrieve key path.
     *
     * @return string
     */
    public function getKeyPath()
    {
        return $this->keyPath;
    }

    /**
     * Retrieve key pass phrase.
     *
     * @return null|string
     */
    public function getPassPhrase()
    {
        return $this->passPhrase;
    }
}

• [D] AuthorizationValidators
• [D] CodeChallengeVerifiers
• [D] Entities
• [D] Exception
• [D] Grant
• [D] Middleware
• [D] RedirectUriValidators
• [D] Repositories
• [D] RequestTypes
• [D] ResponseTypes
• [F] AuthorizationServer.php
  Delete
• [F] CryptKey.php
  Delete
• [F] CryptTrait.php
  Delete
• [F] RequestAccessTokenEvent.php
  Delete
• [F] RequestEvent.php
  Delete
• [F] RequestRefreshTokenEvent.php
  Delete
• [F] ResourceServer.php
  Delete

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                        Request Example (guzzle)
                        

                        
                            
<?php
                            
 require_once('vendor/autoload.php');
                            
 $client = new \GuzzleHttp\Client();
                            
 $response = $client->request('POST', $base_url. 'v1/generate-token', [
                            
'headers' => [
                            
  'accept' => 'application/json',
                            
  'content-type' => 'application/json',
                            
 ],
                            
'form_params' => [
                            
  'client_id'     => '$client_id',
                            
  'secret_id'     => 'secret_id',
                            
  'env'           => 'env',
                            
  'merchant_id'   => 'merchant_id',
                            
 ],
                            
                            
]);
                            
echo $response->getBody();
                        
                    
                

                    
                        
**Response: SUCCESS (200 OK)**
                        
{
                        
 "message": {
                        
 "success": [
                        
  "Successfully token is generated"
                        
 ]
                        
},
                        
"data": {
                        
 "token":"eyJpdiI6InpkczhjTjhQdVhUL2lKQ0pSUUx6aUE9P
SIsInZhbHVlIjoiVGVBTVBDTXltbjNZcEIvdEJveGpTSno3TU5NRUtn
VkhCZ1pHTFNCUnZGQ2UxMnYxN202cEE1YVRDTEFsc0ZERExoTjdtL0dTL2x
oU3QzeUJJOExiMUx5T0w1L0llUXhTUkU1cWVLWEdEbEplb0dKNXcwbTNRM0
VxdkUwYzZuNFdtNkhMQ0pRZysyNWkvdzBxSlBoSVBSOGFTekNnR2RXNHVtc
G9lMGZOTmNCcm1hR3c5Sk9KTnB4Y3ltZDl6cm90MThrR21Ca3B1azc3bXRi
Q0J6SW96UVo1elNkU1ZqeE05bTcwWGp1MEUxWlJFdnNWTmpSbnVpeW92b2U
4dXZkUGgyb1VmK0luaGdyaFlsVTZlcVpVRnZlTG1DeFF6Ykk2T2h6Z3Jzbn
IyNHpNdHowSE5JdDR0Y0pZT20zUm1XYW8iLCJtYWMiOiJlY2M4NGE1OGUzYz
kzYzk0YzljNmVmNjE0YWI0ZDIwOGI3NDQ2YWEyY2ZhNzc0NzE4ZmY1ZmYyMz

                        IyZmQzNDY1IiwidGFnIjoiIn0=",
                        
},
                        
"type": "success"
                        
}
                    
                

                    
                        
**Response: ERROR (400 FAILED)**
                        
{
                        
 "message": {
                        
 "error": [
                        
  "Invalid credentials."
                        
 ]
                        
},
                        
"data": null,
                        
"type": "error"
                        
}