# Turtl

> "Now is a very important time in history. Every aspect of our lives is moving into the digital world faster than we realize. We use apps like Dropbox or Evernote because of their convenience, but in doing so we sacrifice our privacy. What data isn't sold to advertisers or stolen by hackers is carved up by government surveillance."

Turtl is a system for privately creating and sharing notes and images, similar to Evernote. It can be set up so that a small number of users on the server can share their notes in a convenient way. It doesn't have any web user interface, and you need to install native clients on mobile or laptop/desktop machines.

Since the data at rest is stored in PGP encrypted format this is a good system to use in cases where security really is a critical factor.

## Installation

Log into your system with:

    ssh myusername@mydomain -p 2222

Using cursor keys, space bar and Enter key select Administrator controls and type in your password.

Select Add/Remove Apps then turtl. You will then be asked for a domain name and if you are using FreeDNS also the code for the domain which can be found under Dynamic DNS on the FreeDNS site (the random string from "quick cron example" which appears after update.php? and before >>). For more details on obtaining a domain and making it accessible via dynamic DNS see the FAQ. Typically the domain name you use will be a subdomain, such as notes.mydomainname.net. It will need to be a domain which you have bought somewhere and own and not one of the FreeDNS subdomains, otherwise you won't be able to get a SSL/TLS certificate for it.

After the install has completed go to Security settings and select Create a new Let's Encrypt certificate and enter the domain name that you are using for Turtl. If you're using the "onion only" version of the system then you don't need to do this. If the certificate is obtained successfully then you will see a congratulations message.

## Initial setup

The most common use case will be with Android devices. The Android app isn't currently available within F-droid (see the FAQ for details) but can be downloaded from the Turtl site.

Run the downloaded native app then at the bottom of the screen select advanced settings and enter your turl domain name, then register a new account. The password can be anything you choose, but since the client side encryption depends upon having a good password make it a long random string generated by a password manager such as KeepassX.

You should then be able to log in and start using the app. You might also want to invite any other users of your Freedombone system to also sign up using the turtl domain name which you specified during installation.

## Locking it down

Once you have created accounts it's a good idea to turn off new turtl signups. This will prevent millions of random users on the interwebs from creating accounts on your system and killing your server, or possibly other nefarious security scenarios. Go to the administrator control panel and select App Settings then turtl. You will then be able to disable new user registrations and also set the data storage limit for users. If you need additional users later you can always temporarily re-enable signups.

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