MCrypt not decrypting simple text

I'm using MCrypt and I have two very simple functions. All I'm doing is
giving the function some text and a password, it encrypts the text and saves
it as a text file on the server. Then I at some later time run another php
file which decrypts using the decrypt function given the text and the SAME
password as the first time and all I get is garbage. What am I doing wrong?
What do I need to change so that I can get this to work the way I described?

function aes_128_encrypt($text,$password) {

$size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
$iv = mcrypt_create_iv($size, MCRYPT_DEV_RANDOM);

$text .= chr(3).chr(3).chr(3);

return bin2hex(mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $password, $text,
MCRYPT_MODE_ECB, $iv));

} // End of function

and

function aes_128_decrypt($encrypted_text,$password) {

$size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
$iv = mcrypt_create_iv($size, MCRYPT_DEV_RANDOM);

return mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $password, pack("H*",
$encrypted_text), MCRYPT_MODE_ECB, $iv);

} // End of function


- Dan

Ok, looks like I'm not getting much intrest here, can anyone recomend which
newsgroup I should post this under? Is there a crypto group or anything of
the like?:

- Dan

""Dan"" <frozendice@gmail.com> wrote in message
news:AB.E9.09437.752D2E74@pb1.pair.com...
> I'm using MCrypt and I have two very simple functions. All I'm doing is
> giving the function some text and a password, it encrypts the text and
> saves it as a text file on the server. Then I at some later time run
> another php file which decrypts using the decrypt function given the text
> and the SAME password as the first time and all I get is garbage. What am
> I doing wrong? What do I need to change so that I can get this to work the
> way I described?
>
> function aes_128_encrypt($text,$password) {
>
> $size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
> $iv = mcrypt_create_iv($size, MCRYPT_DEV_RANDOM);
>
> $text .= chr(3).chr(3).chr(3);
>
> return bin2hex(mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $password,
> $text, MCRYPT_MODE_ECB, $iv));
>
> } // End of function
>
> and
>
> function aes_128_decrypt($encrypted_text,$password) {
>
> $size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
> $iv = mcrypt_create_iv($size, MCRYPT_DEV_RANDOM);
>
> return mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $password, pack("H*",
> $encrypted_text), MCRYPT_MODE_ECB, $iv);
>
> } // End of function
>
>
> - Dan