How to encrypt data in Chrome?

Question

Google Chrome

Hello. Now the task arose to write an extension for working with encrypted data from websql.
The question is how best to do it? The idea comes to mind to encrypt all columns using AES () and already when working with data, enter the key. But perhaps there is another way?
The password storage extension is written the same way.

Answer 1

MB https://developer.mozilla.org/ru/docs/Web/API/Wind... ?