How to encrypt document without having encryption key......Urgent

Hi All,

I have created a form with few encryption fields. I have generated an encryption key.

if users create a document by using this form that document is encrypting if they have key(encryption key).

its working fine in this scenario.

The problem is:

Few users don’t have the encryption key. If these users create a document without having the key it’s not working (not encrypting).

I want to encrypt every document either they have encryption key or not it doesn’t mater.