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SSL Certificate

Why a certificate is important

Browsers require secure communication with the server to use camera API. Without it we can't use QR code scanning.

If you are running a VPS it's easy - you just issue a new certificate with Letsencrypt.

If you are only using the node at home and want to use it from your local network and via camera, you need to run it via SSL.

Easy solution

The easiest solution is to simply add --ssl to the serve-command and the certificate will get created automatically in the specter-home-folder.

python3 -m cryptoadance.specter server --ssl

Manual creation

A second way, which provides more customization, is to run the gen-certificate.sh script in this folder with your node's IP address as an argument:

gen-certificate.sh <your-node-local-ip-address>

It will create two files - cert.pem and key.pem.

Bare Specter over HTTPS

Provide these files to Specter as arguments:

python -m cryptoadvance.specter server --cert=./cert.pem --key=./key.pem

Note: Adding --tor=your-tor-password will create a tor hidden service with https.

Specter with Nginx

Assuming you copied the files to /etc/ssl/certs and /etc/ssl/private add the following lines to server config (/etc/nginx/sites-enabled/default):

listen 443 ssl http2;

ssl_certificate /etc/ssl/certs/cert.pem;
ssl_certificate_key /etc/ssl/private/key.pem;
ssl_protocols TLSv1.2 TLSv1.1 TLSv1;

The config should look like this:

server{
  listen 80 default_server;
  listen 443 ssl http2;

  server_name your_domain_or_ip;

  ssl_certificate /etc/ssl/certs/cert.pem;
  ssl_certificate_key /etc/ssl/private/key.pem;
  ssl_protocols TLSv1.2 TLSv1.1 TLSv1;

  location / {
    proxy_pass http://127.0.0.1:25441;
  }
}

Adding certificate to trusted

With these certificates you should be able to navigate to your node using https, but you will see a scary warning.

In Firefox you can still proceed to the website, in Chrome you can't unless you add cert.pem file to trusted (on the phone you still can).

On Mac: copy cert.pem to your computer, add it to your keychain and set Trust:

  • Don't forget to quit Chrome
  • Start the Keychain Access app and open the Certificates category
  • Drag your certificate file onto the Keychain Access window
  • Right-click on your certificate and unfold the Trust list
  • In row When using this certificate, choose Always Trust

Other platforms: ???