Integrate CCK with AES Encryption module

Hello,

I am looking into the possibility of integrating a CCK Textfield for example with AES Encryption module, to store the data as encrypted inside the db.

http://drupal.org/project/aes

AES has these functions:

For developers:
This module can provide you with a very simple and easy to use encryption API. Just check out the aes_encrypt and aes_decrypt functions. It really can't get any simpler.

In a nutshell:
$encrypted_data = aes_encrypt("mydata");
$decrypted_to_plain_text = aes_decrypt($encrypted_data);

If we could hook into CCK just before it saves and retrieves data from the db, we could have data stored in the db securely. So if hackers get a hold of the db, the data will be useless for them.

Just think of the recent breach of email marketing companies, whose dbs were stolen and their user base spammed...
http://www.reuters.com/article/2011/04/05/idUS100003661220110405