Encrypt data at rest in your database


# silverstripe-encrypt-at-rest

This module allows data to be encrypted in the database, but be decrypted when extracted from the database, using a secret key (hopefully) known only by the web server.

Note: This does not provide significant protection except in the case of database compromise. It should be used as part of a layered security strategy. This is because the key is still available on the web server, so if remote code execution is achieved by an attacker, they will be able to read both the database and the encryption key, thereby decrypting the content.

Note: This module is not yet ready for real use, it's currently v0.0.1 material.


In your DataObject, use EncryptedDBField, to have it encrypted. At this point, everything is stored as text.

Set a key in your _ss_environment file.

define('ENCRYPT_AT_REST_KEY', 'mysupersecretlonghexkeyhere1234567890');


  • Make sure $this->value is always the unencrypted value
  • Clean up
  • EncryptedEnum needs validation
  • Extended testing

- Test if the value is actually encrypted, before trying to decrypt