Base64 Decoding

[Bryan A]

I'm having a problem decoding an encrypted Base64 string (with a key).
I am trying to encode and decode with a url friendly version. It works
if I use them seperate but when I try to put them both in the same
function it doesn't decrypt it right.

function encrypt($string , $key) {
$result = ”;
for($i=0; $i<strlen($stri ng); $i++) {
$char = substr($string, $i, 1);
$keychar = substr($key, ($i % strlen($key))-1, 1);
$char = chr(ord($char)+ ord($keychar));
$result.=$char;
}
$base64 = base64_encode($ result);
$base64url = strtr($base64, '+/=', '-_,');
return $base64url;
}

function decrypt($string ,$key) {
$result = ”;
$string = strtr($string, '-_,', '+/=');
$string = base64_decode($ string);

for($i=0; $i<strlen($stri ng); $i++) {
$char = substr($string, $i, 1);
$keychar = substr($key, ($i % strlen($key))-1, 1);
$char = chr(ord($char)-ord($keychar));
$result.=$char;
}
return $result;
}

Thanks,
Bryan

[Bryan A]

On Nov 8, 3:38*pm, Bryan A <Bryan.Andr...@ gmail.comwrote:

I'm having a problem decoding an encrypted Base64 string (with a key).
I am trying to encode and decode with a url friendly version. It works
if I use them seperate but when I try to put them both in the same
function it doesn't decrypt it right.

function encrypt($string , $key) {
* $result = ”;
* for($i=0; $i<strlen($stri ng); $i++) {
* * $char = substr($string, $i, 1);
* * $keychar = substr($key, ($i % strlen($key))-1, 1);
* * $char = chr(ord($char)+ ord($keychar));
* * $result.=$char;
* }
* * $base64 = base64_encode($ result);
* * $base64url = strtr($base64, '+/=', '-_,');
* * return $base64url;

}

function decrypt($string ,$key) {
* $result = ”;
* $string = strtr($string, '-_,', '+/=');
* $string = base64_decode($ string);

* for($i=0; $i<strlen($stri ng); $i++) {
* * $char = substr($string, $i, 1);
* * $keychar = substr($key, ($i % strlen($key))-1, 1);
* * $char = chr(ord($char)-ord($keychar));
* * $result.=$char;
* }
* * return $result;

}

Thanks,
Bryan

Nevermind. I figured out that I can call another function from inside
another