A fully cross-platform messenger app with End to End Encryption (E2EE).

NOTE: The features shown in the demo is not exhaustive. Only the core features are showcased in the demo.

1. Desktop: Windows, Linux, MacOS
2. Mobile: Android, iOS
3. Website: Any device with a browser

The back-end of the app is handled by Firebase.

1. Go to firebase console and create a new project with the name Smartsapp
2. Enable Google Analylitics

1. Create an App for the project from the overview page
2. Copy and paste the configurations in the required location (given in the readme of the respective apps)

1. Go to the project Authentication section
2. Select Sign-in method tab
3. Enable Email/Password and Google sign in

1. Go to the project Firestore section
2. Create firestore provisions for the project (choose the server nearest to your location)
3. Go to the Rules tab and use the fillowing rules:

   rules_version = '2';
   service cloud.firestore {
       match /databases/{database}/documents {
           match /contacts/{uid} {
               allow read, create, update: if request.auth != null;
           }
           match /keys/{uid} {
               allow read, create: if request.auth != null && request.auth.uid == uid;
           }
           match /messages/{msg} {
               allow read, create: if request.auth != null;
           }
           match /users/{uid} {
               allow read: if request.auth != null;
               allow create, update: if request.auth != null && request.auth.uid == uid;
           }
       }
   }

4. Go to the Indexes tab and create the following index:

   {
       collection: "messages",
       fields: {
           users: Ascending,
           timestamp: Descending,
       },
       queryScope: Collection
   }

1. Go to the project Storage section
2. Create storage provisions for the project (choose the server nearest to your location)
3. Go to the rules tab and use the fillowing rules:

   rules_version = '2';
   service firebase.storage {
       match /b/{bucket}/o {
           match /profilepic/{uid} {
           allow read: if request.auth != null;
           allow create, update: if request.auth != null
               && request.auth.uid == uid
               && request.resource.size < 1024 * 1024
               && request.resource.contentType.matches('image/.*');
           }
           match /media/{media} {
           allow read: if request.auth != null;
           allow create: if request.auth != null
               && request.resource.size < 1024 * 1024
               && request.resource.contentType.matches('image/.*');
           }
       }
   }

Running the E2EE Key Generator Server is necessary for all Platforms