I’m writing a Node.JS application that will store chat logs to a datastore (i.e. MongoDB), along with some other user information. I’m already using bcrypt to store salted hashes for user passwords, so I’m covered there.
What the best method of encrypting persisted data? I’m talking about sensitive user data such as phone numbers, and the chat logs. If my database gets compromised, I don’t want this information being usable.
I do need two-way encryption/decryption, however, because I need to be able to use the plain-text values (i.e. the phone numbers are for Twilio, the chat logs are for users to see their old messages).
I’m looking into node-crypto but I haven’t been able to find any examples of doing this in a performant/realtime fashion.
UPDATE: I should’ve mentioned that the chat “logs” are actually full conversations that get pushed to “rooms” in real-time when users join them (i.e. they can see the entire chat history, or at least a subset of it). So, I’d need to be able to encrypt and decrypt on the fly pretty quickly (if not in real-time, at least with some sort of worker process).
The best thing to do is use
require('crypto').You will however need to port it to the clientside. Good luck with that. (Shouldn’t be too hard with browserify)