md5 decoding?

Z3RatuL

Hi again 🙂

I've used md5 to crypt (in some way) passwords in a table at my database so I can add some security... The thing is that I want to be able to grab the encrypted text and turn it again to the original password:

i.e. 123456 turns to: e10adc3949ba59abbe56e057f20f883e.

How can I grab it from the table's column and turn it back again to 123456?

Frederick

$row = mysql_fetch_array($result);

$user = "".$row["username"]."";

$temp = md5($user);

if ($username == $temp) {
echo "whatever";
}

cgraz

The thing is that I want to be able to grab the encrypted text and turn it again to the original password:

Once you encrypt with md5, there's no turning back.

Cgraz

Frederick

If you need to reverse the encryption.

SQL goes here to get information

$row = mysql_fetch_array($sql);
$temp = "".$row["fieldname"]."";

$content = md5($temp);

From here, you can populate a form using the variable $content:
<input type=text name=content value=$content size=40>

UPDATE tablename SET using $content variable.

cgraz

Frederick: md5 is non-reversible.

Source: mbabcock-php at fibrespeed dot net
from http://www.php.net/manual/en/function.md5.php
This is how MD5 is used -- it is not for encrypting things so as to get the data back afterward

Source: http://www.cisco.com/warp/public/701/64.html
because MD5 is a one-way hash, and the password can't be recovered from the encrypted data at all.

or for more reading: search yahoo

Cgraz

Frederick

I guess your right, i never tried to print it out in reverse, just checked against it.

This what I get
http://www.ronfrederick.com/index.php?name=modules/test