萬盛學電腦網

 萬盛學電腦網 >> 網絡編程 >> php編程 >> PHP使用DES進行加密與解密的方法

PHP使用DES進行加密與解密的方法

   代碼如下:

  //$input - stuff to decrypt

  //$key - the secret key to use

  function do_mencrypt($input, $key)

  {

  $input = str_replace(""n", "", $input);

  $input = str_replace(""t", "", $input);

  $input = str_replace(""r", "", $input);

  $key = substr(md5($key), 0, 24);

  $td = mcrypt_module_open('tripledes', '', 'ecb', '');

  $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);

  mcrypt_generic_init($td, $key, $iv);

  $encrypted_data = mcrypt_generic($td, $input);

  mcrypt_generic_deinit($td);

  mcrypt_module_close($td);

  return trim(chop(base64_encode($encrypted_data)));

  }

  //$input - stuff to decrypt

  //$key - the secret key to use

  function do_mdecrypt($input, $key)

  {

  $input = str_replace(""n", "", $input);

  $input = str_replace(""t", "", $input);

  $input = str_replace(""r", "", $input);

  $input = trim(chop(base64_decode($input)));

  $td = mcrypt_module_open('tripledes', '', 'ecb', '');

  $key = substr(md5($key), 0, 24);

  $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);

  mcrypt_generic_init($td, $key, $iv);

  $decrypted_data = mdecrypt_generic($td, $input);

  mcrypt_generic_deinit($td);

  mcrypt_module_close($td);

  return trim(chop($decrypted_data));

  }

copyright © 萬盛學電腦網 all rights reserved