Drupal-6 CCK Field Encryption

We need a Drupal-6 CCK module which has the function of "Field Encrypttion" ([login to view URL]). The encryption method can be chosen between Encrypt ([login to view URL]) or AES ([login to view URL]) when a new CCK field is created. Requirement: 1. The module is Drupal 6.x compliant. 2. The encryption process happens on-the-fly so it is transparent to users. 3. CCK filed data type is "text". 4. CCK field data needs to be stored in the database encrypted (by Encrypt or AES). 5. While the data are retrieved from the database during Views, edit, view, the data will be decrypted to show original data