Rails: storing encrypted data in database

Question

I want to encrypt database because confidential data is being stored. I use mongodb with mongoid. It possible for this kind of database? And what alternatives can you recome

Answer 1

I have gotten attr_encrypted working with Mongo and Mongoid. It takes only a few tweaks.

Make sure that all of the encrypted_ fields that are automatically created by attr_encrypted are explicitly created in the model. For instance, if you have:

    attr_encrypted :email, :key => 'blah blah blah', :encode => true

you need to have:

    field :email, :type => String
    field :encrypted_email, :type => String

Also notice you need to tell it to encode the encrypted string otherwise Mongo will complain loudly.

Lastly, if you're encrypting a hash, do this:

    field :raw_auth_hash, :type => Hash
    field :encrypted_raw_auth_hash, :type => String

    attr_encrypted :raw_auth_hash, :key => 'blah', :marshal => true, :encode => true