note 98176 modified in mcrypt.examples by visualmind

The code from "jizz" is pretty helpful, though I found the $last_char logic to be insufficient. The following function is working great for me to decrypt 3DES strings from .NET.

<?php
function decrypt($password) {
    $key = 'some key';
    $iv = 'some iv';

    $cipher = mcrypt_module_open(MCRYPT_TRIPLEDES,'','cbc','');
    mcrypt_generic_init($cipher, $key, $iv);
    $decrypted = mdecrypt_generic($cipher,$bytes);
    mcrypt_generic_deinit($cipher);

    for($i=0; $i < strlen($decrypted); $i++){
        if(ord($decrypted[$i]) < 8) {
            $decrypted = substr($decrypted, 0, $i);
            break;
        }
    }

    return $decrypted;
}
?>

--was--
The code from "jizz" is pretty helpful, though I found the $last_char logic to be insufficient. The following function is working great for me to decrypt 3DES strings from .NET.

function decrypt($password) {
    $key = 'some key';
    $iv = 'some iv';

    $cipher = mcrypt_module_open(MCRYPT_TRIPLEDES,'','cbc','');
    mcrypt_generic_init($cipher, $key, $iv);
    $decrypted = mdecrypt_generic($cipher,$bytes);
    mcrypt_generic_deinit($cipher);

    for($i=0; $i < strlen($decrypted); $i++){
        if(ord($decrypted[$i]) < 8) {
            $decrypted = substr($decrypted, 0, $i);
            break;
        }
    }

    return $decrypted;
}

http://php.net/manual/en/mcrypt.examples.php