snw7 / otp-auth

This is a lightweight API that allows communication between iOS devices and a remote server. It relies on OTP authentication.

Documentation

This is a lightweight API that allows communication between iOS devices and a remote server. The API endpoint is containerized with docker. It relies on OTP authentication. Each token is valid for 30s.

Setup

Server

1. copy this repo to your remote server and install docker
2. (optional) install "letsencrypt" SSL certificates for a secure connection
3. create a new .env file (based on .env.example) and fill the values accordingly
4. generate a random salt: openssl rand -hex 32 & save it to your .env
5. update the EXPOSE value in your Dockerfile
6. build the docker container with docker build -t otp-auth .
7. run the docker container docker run -d -p <your-port>:<your-port> -v /etc/letsencrypt/:/etc/letsencrypt/ otp-auth (volume mount is only required for SSL setup)

Client

1. install the Scriptable app from the App Store
2. for each of the *.js files in the client/ folder: create a new script in the Scriptable app
3. replace the default SALT in the run.js file with the previously generated value
4. open the otp-auth-client.shortcut file with the Shortcuts app and install the workflow
5. select the gen-otp-token.js script in the first action of the workflow
6. enter the domain of your server and the port the service is running on in action 4
7. execute the shortcut -> you should receive a success message from your server

License

This project is written by snw7 and licensed under the MIT License.

This project uses https://github.com/emn178/js-sha3 © Chen, Yi-Cyuan 2015-2018.