function encrypt_encrypt_basic in Encrypt 6

Same name and namespace in other branches

1. 7 includes/encrypt.encrypt.inc \encrypt_encrypt_basic()

Call back for Encrypt implementation: default

This method uses a simple encryption method of character replacement. Note that we are not using the drupal_ equivalent for strlen and substr because of issues.

1 string reference to 'encrypt_encrypt_basic'

encrypt_encrypt_method_info in includes/encrypt.encrypt.inc

Implementation of encrypt_method_info().

File

includes/encrypt.encrypt.inc, line 63

This file holds the hook implementation for the encrypt modules

Code

function encrypt_encrypt_basic($op = 'encrypt', $text = '', $key = ENCRYPT_DEFAULT_KEY_NONE, $options = array()) {
  $processed_text = '';

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

    // Decrypt
    for ($i = 0; $i < strlen($text); $i++) {
      $char = substr($text, $i, 1);
      $keychar = substr($key, $i % strlen($key) - 1, 1);
      $char = chr(ord($char) - ord($keychar));
      $processed_text .= $char;
    }
  }
  else {

    // Encrypt
    for ($i = 0; $i < strlen($text); $i++) {
      $char = substr($text, $i, 1);
      $keychar = substr($key, $i % strlen($key) - 1, 1);
      $char = chr(ord($char) + ord($keychar));
      $processed_text .= $char;
    }
  }
  return $processed_text;
}