Help to recover password from an unknown hash type

Code:

// validate password function

function validatePassword(

    $username, /* username string */

    $cleartext_password, /* clear text password that's supplied by user */

    $encrypted_password /* encrypted password that's stored in the database */

    ) {



    // build a key based on supplied username and clear text password

    $key = trim($username).trim($cleartext_password);



    // decrypt the encrypted password based on the above key

    $decrypted_password = decrypt($encrypted_password, $key, 'twofish', 'cfb');



    // if both string matches, password is correct

    if ($decrypted_password == $cleartext_password) return true;



    // if both string does not match, password is wrong

    return false;

}

Code:

function setCipherModeKey($cipher, $mode, $encryptkey) {

    $key = '';

    if (!empty($encryptkey)) {

        // get the size of the encryption key

        $keysize = mcrypt_get_key_size ($cipher, $mode);



        // if the encryption key is less than 32 characters long and the expected keysize is at least 32 md5 the key

        if ((strlen($encryptkey) < 32) && ($keysize >= 32)) {

            $encryptkey = md5($encryptkey);

        // if encryption key is longer than $keysize and the keysize is 32 then md5 the encryption key

        } elseif ((strlen($encryptkey) > $keysize) && ($keysize == 32)) {

            $encryptkey = md5($encryptkey);

        } else {

            if ($keysize > strlen($encryptkey)) {

                // if encryption key is shorter than the keysize, strpad it with space

                $encryptkey = str_pad($encryptkey, $keysize);

            } else {

                // if encryption key is longer than the keysize substr it to the correct keysize length

                $encryptkey = substr($encryptkey, 0, $keysize);

            }

        }

        $key = $encryptkey;

    }

    return $key;

}



function decrypt($encrypted, $key, $cipher, $mode) {

    if (0 == strlen($encrypted)) return '';  //nothing to decrpyt or encrypt....



    $key = setCipherModeKey($cipher, $mode, $key);     // set key



    // extract encrypted value from base64 encoded value

    $data = base64_decode($encrypted);



    // open encryption module

    $td = @mcrypt_module_open($cipher, '', $mode, '');



    // get what size the IV should be

    $ivsize = mcrypt_enc_get_iv_size($td);



    // get the IV from the encrypted string

    $iv = substr($data, 0, $ivsize);



    // remove the IV from the data so we decrypt cleanly

    $data = substr($data, $ivsize);



    // initialize decryption

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



    // decrypt the data

    $decrypted = mdecrypt_generic ($td, $data);



    // cleanup

    mcrypt_generic_deinit($td);

    mcrypt_module_close($td);



    // get rid of original data

    unset($data);



    return $decrypted;

}