mcrypt decoding errors
- by Kyle Hudson
Hi,
I have a few issues with the following php functions (part of a bigger class).
//encode
public function acc_pw_enc($text, $key) {
$text_num = str_split($text, 8);
$text_num = 8 - strlen($text_num[count($text_num)-1]);
for ($i=0; $i < $text_num; $i++) {
$text = $text . chr($text_num);
}
$cipher = mcrypt_module_open(MCRYPT_TRIPLEDES, '', 'cbc', '');
mcrypt_generic_init($cipher, $key, 'fYfhHeDm');
$decrypted = mcrypt_generic($cipher, $text);
mcrypt_generic_deinit($cipher);
return base64_encode($decrypted);
}
//decode
public function acc_pw_dec($encrypted_text, $key) {
$cipher = mcrypt_module_open(MCRYPT_TRIPLEDES, '', 'cbc', '');
mcrypt_generic_init($cipher, $key, 'fYfhHeDm');
$decrypted = mdecrypt_generic($cipher, base64_decode($encrypted_text));
mcrypt_generic_deinit($cipher);
$last_char = substr($decrypted, -1);
for($i=0; $i < 8-1; $i++) {
if(chr($i) == $last_char) {
$decrypted = substr($decrypted, 0, strlen($decrypted)-$i);
break;
}
}
return rtrim($decrypted); //str_replace("?", "", $decrypted);
}
So for exampe if i encrypt the string 'liloMIA01' with the salt/key 'yBevuZoMy' i will get '7A30ZkEjYbDcAXLgGE/6nQ=='.
I get liloMIA01 as the decrypted value, i tried using rtrim but it didn't work.
