This repo consists of a series of code snippets written to authenticate a user through one-time password, i.e. sending them a randomly generated code via SMS and, if the code matches, they will be sent a JWT indicating that they're authenticated to the system. These snippets are Google Cloud Functions that use Firebase as the database engine and Twilio to send SMS.
Please bear in mind that, for these functions to work, you need a paid Firebase plan. For the purposes of testing this code, you can use a Blaze plan (pay-as-you-go).
- Create a Firebase project on Firebase Console
- Create a Firebase service account and save the JSON file inside
functions/service_account.json - Enable anonymous auth
- Create a Twilio account and obtain a phone number that's capable of sending SMS
- Add your account SID and auth token to
twilio-sample.jsand save astwilio.js - Open the
/functionsdirectory in your terminal and runnpm install
- Install Firebase CLI tools (
npm install -g firebase-tools) - Run
firebase deploy --project YOUR_PROJECT_IDin your project root