Detailed explanation of how PHP uses DES for encryption and decryption_PHP Tutorial

function do_mencrypt($input, $key)
{
$input = str_replace(""n", "", $input);
$input = str_replace(""t", " ", $input);
             $input = str_replace(""r", "", $input);                  $key =                                                                                       $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); 🎜>
}

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