private function XMLSecurityKey::encryptMcrypt in SAML SP 2.0 Single Sign On (SSO) - SAML Service Provider 7

Encrypts the given data (string) using the mcrypt-extension

Parameters

string $data:

Return value

string

1 call to XMLSecurityKey::encryptMcrypt()

XMLSecurityKey::encryptData in includes/XMLSecurityKey.php

Encrypts the given data (string) using the regarding php-extension, depending on the library assigned to algorithm in the contructor.

File

includes/XMLSecurityKey.php, line 406

Class

XMLSecurityKey

Code

private function encryptMcrypt($data) {
  $td = mcrypt_module_open($this->cryptParams['cipher'], '', $this->cryptParams['mode'], '');
  $this->iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
  mcrypt_generic_init($td, $this->key, $this->iv);
  if ($this->cryptParams['mode'] == MCRYPT_MODE_CBC) {
    $bs = mcrypt_enc_get_block_size($td);
    for ($datalen0 = $datalen = strlen($data); $datalen % $bs != $bs - 1; $datalen++) {
      $data .= chr(mt_rand(1, 127));
    }
    $data .= chr($datalen - $datalen0 + 1);
  }
  $encrypted_data = $this->iv . mcrypt_generic($td, $data);
  mcrypt_generic_deinit($td);
  mcrypt_module_close($td);
  return $encrypted_data;
}