function encrypt_encrypt_mcrypt_rij_256 in Encrypt 7

Same name and namespace in other branches

1. 6 includes/encrypt.encrypt.inc \encrypt_encrypt_mcrypt_rij_256()

Callback for Encrypt implementation: Mcrypt

This method uses a PHPs mcrypt extension and AES-256

1 string reference to 'encrypt_encrypt_mcrypt_rij_256'

encrypt_encrypt_method_info in includes/encrypt.encrypt.inc

Implementation of hook_encrypt_method_info().

File

includes/encrypt.encrypt.inc, line 93

This file holds the hook implementation for the encrypt modules

Code

function encrypt_encrypt_mcrypt_rij_256($op = 'encrypt', $text = '', $options = array()) {
  $processed_text = '';

  // Check for key
  if (!empty($options['key'])) {
    $key = $options['key'];
  }
  else {
    $key = variable_get('drupal_private_key', 'no_key');
  }

  // Key cannot be too long for this encryption
  $key = drupal_substr($key, 0, 32);

  // Define iv cipher
  $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);
  $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
  $use_base64 = array_key_exists('base64', $options) && $options['base64'] !== FALSE;

  // Check op
  if ($op == 'decrypt') {

    // Decrypt
    // Check if we are using base64 encoding
    if ($use_base64) {
      $text = base64_decode($text);
    }

    // Decrypt text
    $processed_text = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $text, MCRYPT_MODE_ECB, $iv);
  }
  else {

    // Encrypt
    $processed_text = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $text, MCRYPT_MODE_ECB, $iv);

    // Check if we are using base64 encoding
    if ($use_base64) {
      $processed_text = base64_encode($processed_text);
    }
  }
  return trim($processed_text);
}