Feature: AES-256 encryption

[Feature Bot]

User ofutur submitted the following feature request:

AES-256 encryption

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[ofutur]

For more than groceries list, it could be useful to encrypt everything before transferring it

[marwatk]

My first beta actually did this, but the key setup between pairs proved to be too much configuration for my target audience (couples).

I could probably add it back in as a simple shared secret key (passphrase), but it's not the securest thing in the world (no forward security, same key each time, etc).

Would that work?

[ofutur]

I think that's what I meant. Having a common password that encrypts/decrypts the content of the database. That way couples could send a password or any other sensitive information that way.
Is the connection made via SSL as well?