>>How do you get the unencrypted value back?
>
>You don't - hashing does not allow to 'reverse'. It's called hashing - not encrypting
>
>And the length of the hash is always the same - regardless of the length of the input
>
>Did he enter the right password ? - easy - hash it again and compare the hash to the hash in the table

Yes, I discussed it with Denis already. I think this is not what we want - we want to encrypt the data.