Merge branch 'master' into v5-dart

* AES-GSM encryption with padding

* RSA-OAEP encryption and key generation

* SPKI encoding/decoding RSA public keys

* rename functions

* encode/decode RSA keys using asn1lib library

* remove poitycastle namespace

* remove unnecessary typecheck

* fix: ci

Co-authored-by: alex <alex@tekartik.com>

.github/workflows/build_haskell.yml

@@ -4,10 +4,16 @@ on:
   push:
     branches:
       - master
-      - v4
+      - v5
     tags:
       - "v*"
+    paths:
+      - haskell/**
+      - .github/workflows/build_haskell.yml
   pull_request:
+    paths:
+      - haskell/**
+      - .github/workflows/build_haskell.yml
 
 jobs:
   prepare-release:
@@ -87,6 +93,7 @@ jobs:
 
       - name: Build & test
         id: build_test
+        working-directory: ./haskell
         run: |
           stack build ${{ matrix.stack_args }}
           echo "::set-output name=LOCAL_INSTALL_ROOT::$(stack path --local-install-root)"

.github/workflows/ci_dart.yml

@@ -0,0 +1,32 @@
+name: Run CI
+on:
+  push:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 0 * * 0'  # every sunday at midnight
+
+jobs:
+  test:
+    name: Test on ${{ matrix.os }} / ${{ matrix.flutter }}
+    runs-on: ${{ matrix.os }}
+    defaults:
+      run:
+        working-directory: packages/repo_support
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        flutter: [stable, beta, dev]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-java@v1
+        with:
+          java-version: '12.x'
+      - uses: subosito/flutter-action@v1
+        with:
+          channel: ${{ matrix.flutter }}
+      - run: flutter --version
+      - run: flutter upgrade
+      - run: dart --version
+      - run: dart pub get
+      - run: dart run tool/run_ci.dart

.gitignore

@@ -43,9 +43,54 @@ cabal.project.local~
 *.cabal
 stack.yaml.lock
 
-# Idris
-*.ibc
-
 # chat database
 *.db
 *.db.bak
+
+# Misc
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+
+# IntelliJ
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# VS Code
+.vscode/
+
+# Flutter/Dart/Pub
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+build/
+# Default behavior, only keep it for apps
+pubspec.lock
+
+# Web
+lib/generated_plugin_registrant.dart
+
+# Symbolication
+app.*.symbols
+
+# Obfuscation
+app.*.map.json
+
+# Android Studio build artifacts
+/android/app/debug
+/android/app/profile
+/android/app/release
+

haskell/README.md

@@ -0,0 +1,232 @@
+<img align="right" src="images/logo.svg" alt="SimpleX logo" height="90">
+
+# SimpleX chat (legacy Haskell terminal prototype)
+
+## Private, secure, decentralized
+
+[![GitHub build](https://github.com/simplex-chat/simplex-chat/workflows/build/badge.svg)](https://github.com/simplex-chat/simplex-chat/actions?query=workflow%3Abuild)
+[![GitHub release](https://img.shields.io/github/v/release/simplex-chat/simplex-chat)](https://github.com/simplex-chat/simplex-chat/releases)
+
+> **NEW in v0.4: [groups](#groups) and [sending files](#sending-files)!**
+
+The motivation for SimpleX chat is [presented here](./simplex.md).
+
+SimpleX chat prototype is a thin terminal UI on top of [SimpleXMQ](https://github.com/simplex-chat/simplexmq) message broker that uses [SMP protocols](https://github.com/simplex-chat/simplexmq/blob/master/protocol).
+
+See [simplex.chat](https://simplex.chat) website for chat demo and the explanations of the system and how SMP protocol works.
+
+![simplex-chat](./images/connection.gif)
+
+## Table of contents
+
+- [Disclaimer](#disclaimer)
+- [Network topology](#network-topology)
+- [Terminal chat features](#terminal-chat-features)
+- [Installation](#installation)
+  - [Download chat client](#download-chat-client)
+  - [Build from source](#build-from-source)
+    - [Using Docker](#using-docker)
+    - [Using Haskell stack](#using-haskell-stack)
+- [Usage](#usage)
+  - [Running the chat client](#running-the-chat-client)
+  - [How to use SimpleX chat](#how-to-use-simplex-chat)
+  - [Groups](#groups)
+  - [Sending files](#sending-files)
+  - [Access chat history](#access-chat-history)
+- [Future roadmap](#future-roadmap)
+- [License](#license)
+
+## Disclaimer
+
+This is WIP implementation of SimpleX chat that implements a new network topology for asynchronous communication combining the advantages and avoiding the disadvantages of federated and P2P networks.
+
+If you expect a software being reliable most of the time and doing something useful, then this is probably not ready for you yet. We do use it for terminal chat though, and it seems to work most of the time - we would really appreciate if you try it and give us your feedback.
+
+**Please note:** The main differentiation of SimpleX network is the approach to internet message routing rather than encryption; for that reason no sufficient attention was paid to either TCP transport level encryption or to E2E encryption protocols - they are implemented in an ad hoc way based on RSA and AES algorithms. See [SMP protocol](https://github.com/simplex-chat/simplexmq/blob/master/protocol/simplex-messaging.md#appendix-a) on TCP transport encryption protocol (AEAD-GCM scheme, with an AES key negotiation based on RSA key hash known to the client in advance) and [this section](https://github.com/simplex-chat/simplexmq/blob/master/rfcs/2021-01-26-crypto.md#e2e-encryption) on E2E encryption protocol (an ad hoc hybrid scheme a la PGP). These protocols will change in a consumer ready version to something more robust.
+
+## Network topology
+
+SimpleX is a decentralized client-server network that uses redundant, disposable nodes to asynchronously pass the messages via message queues, providing receiver and sender anonymity.
+
+Unlike P2P networks, all messages are passed through one or several (for redundancy) servers, that do not even need to have persistence (in fact, the current [SMP server implementation](https://github.com/simplex-chat/simplexmq#smp-server) uses in-memory message storage, persisting only the queue records) - it provides better metadata protection than P2P designs, as no global participant ID is required, and avoids many [problems of P2P networks](https://github.com/simplex-chat/simplex-chat/blob/master/simplex.md#comparison-with-p2p-messaging-protocols).
+
+Unlike federated networks, the participating server nodes do NOT have records of the users, do NOT communicate with each other, do NOT store messages after they are delivered to the recipients, and there is no way to discover the full list of participating servers - it avoids the problem of metadata visibility that federated networks suffer from and better protects the network, as servers do not communicate with each other. Each server node provides unidirectional "dumb pipes" to the users, that do authorization without authentication, having no knowledge of the the users or their contacts. Each queue is assigned two RSA keys - one for receiver and one for sender - and each queue access is authorized with a signature created using a respective key's private counterpart.
+
+The routing of messages relies on the knowledge of client devices how user contacts and groups map at any given moment of time to these disposable queues on server nodes.
+
+## Terminal chat features
+
+- 1-to-1 chat with multiple people in the same terminal window.
+- Group messaging.
+- Sending files to contacts and groups.
+- Auto-populated recipient name - just type your messages to reply to the sender once the connection is established.
+- Demo SMP servers available and pre-configured in the app - or you can [deploy your own server](https://github.com/simplex-chat/simplexmq#using-smp-server-and-smp-agent).
+- No global identity or any names visible to the server(s), ensuring full privacy of your contacts and conversations.
+- E2E encryption, with RSA public key that has to be passed out-of-band (see [How to use SimpleX chat](#how-to-use-simplex-chat)).
+- Message signing and verification with automatically generated RSA keys.
+- Message integrity validation (via including the digests of the previous messages).
+- Authentication of each command/message by SMP servers with automatically generated RSA key pairs.
+- TCP transport encryption using SMP transport protocol.
+
+RSA keys are not used as identity, they are randomly generated for each contact.
+
+## Installation
+
+### Download chat client
+
+Download the chat binary for your system from the [latest stable release](https://github.com/simplex-chat/simplex-chat/releases) and make it executable as shown below.
+
+#### Linux and MacOS
+
+```sh
+chmod +x <binary>
+mv <binary> ~/.local/bin/simplex-chat
+```
+
+(or any other preferred location on PATH).
+
+On MacOS you also need to [allow Gatekeeper to run it](https://support.apple.com/en-us/HT202491).
+
+#### Windows
+
+```sh
+move <binary> %APPDATA%/local/bin/simplex-chat.exe
+```
+
+### Build from source
+
+#### Using Docker
+
+On Linux, you can build the chat executable using [docker build with custom output](https://docs.docker.com/engine/reference/commandline/build/#custom-build-outputs):
+
+```shell
+$ git clone git@github.com:simplex-chat/simplex-chat.git
+$ cd simplex-chat
+$ DOCKER_BUILDKIT=1 docker build --output ~/.local/bin .
+```
+
+> **Please note:** If you encounter ``version `GLIBC_2.28' not found`` error, rebuild it with `haskell:8.8.4-stretch` base image (change it in your local [Dockerfile](Dockerfile)).
+
+#### Using Haskell stack
+
+Install [Haskell stack](https://docs.haskellstack.org/en/stable/README/):
+
+```shell
+curl -sSL https://get.haskellstack.org/ | sh
+```
+
+and build the project:
+
+```shell
+$ git clone git@github.com:simplex-chat/simplex-chat.git
+$ cd simplex-chat
+$ stack install
+```
+
+## Usage
+
+### Running the chat client
+
+To start the chat client, run `simplex-chat` from the terminal.
+
+By default, app data directory is created in the home directory (`~/.simplex`, or `%APPDATA%/simplex` on Windows), and two SQLite database files `simplex.chat.db` and `simplex.agent.db` are initialized in it.
+
+To specify a different file path prefix for the database files use `-d` command line option:
+
+```shell
+$ simplex-chat -d alice
+```
+
+Running above, for example, would create `alice.chat.db` and `alice.agent.db` database files in current directory.
+
+Default SMP servers are hosted on Linode (London, UK and Fremont, CA) - they are [pre-configured in the app](https://github.com/simplex-chat/simplex-chat/blob/master/src/Simplex/Chat/Options.hs#L40). Base-64 encoded string after server host is the transport key digest.
+
+If you deployed your own SMP server(s) you can configure client via `-s` option:
+
+```shell
+$ simplex-chat -s smp.example.com:5223#KXNE1m2E1m0lm92WGKet9CL6+lO742Vy5G6nsrkvgs8=
+```
+
+The base-64 encoded string in server address is the digest of RSA transport handshake key that the server will generate on the first run and output its digest.
+
+You can still talk to people using default or any other server - it only affects the location of the message queue when you initiate the connection (and the reply queue can be on another server, as set by the other party's client).
+
+Run `simplex-chat -h` to see all available options.
+
+### How to use SimpleX chat
+
+Once you have started the chat, you will be prompted to specify your "display name" and an optional "full name" to create a local chat profile. Your display name is an alias for your contacts to refer to you by - it is not unique and does not serve as a global identity. In case different contacts chose the same display name, the chat client adds a numeric suffix to their local display names.
+
+This diagram shows how to connect and message a contact:
+
+<div align="center">
+  <img align="center" src="images/how-to-use-simplex.svg">
+</div>
+
+Once you've set up your local profile, enter `/c` (for `/connect`) to create a new connection and generate an invitation. Send this invitation to your contact via any other channel.
+
+You are able to create multiple invitations by entering `/connect` multiple times and sending these invitations to the corresponding contacts you'd like to connect with.
+
+The invitation has the format `smp::<server>::<queue_id>::<rsa_public_key_for_this_queue_only>`. The invitation can only be used once and even if this is intercepted, the attacker would not be able to use it to send you the messages via this queue once your contact confirms that the connection is established.
+
+The contact who received the invitation should enter `/c <invitation>` to accept the connection. This establishes the connection, and both parties are notified.
+
+They would then use `@<name> <message>` commands to send messages. You may also just start typing a message to send it to the contact that was the last.
+
+Use `/help` in chat to see the list of available commands.
+
+### Groups
+
+To create a group use `/g <group>`, then add contacts to it with `/a <group> <name>`and send messages with `#<group> <message>`. Use `/help groups` for other commands.
+
+![simplex-chat](./images/groups.gif)
+
+> **Please note**: the groups are not stored on any server, they are maintained as a list of members in the app database to whom the messages will be sent.
+
+### Sending files
+
+You can send a file to your contact with `/f @<contact> <file_path>` - the recipient will have to accept it before it is sent. Use `/help files` for other commands.
+
+![simplex-chat](./images/files.gif)
+
+You can send files to a group with `/f #<group> <file_path>`.
+
+### Access chat history
+
+> 🚧 **Section currently out of date - will be updated soon** 🏗
+
+SimpleX chat stores all your contacts and conversations in a local database file, making it private and portable by design, fully owned and controlled by you.
+
+You can search your chat history via SQLite database file:
+
+```
+sqlite3 ~/.simplex/smp-chat.db
+```
+
+Now you can query `messages` table, for example:
+
+```sql
+select * from messages
+where conn_alias = cast('alice' as blob)
+  and body like '%cats%'
+order by internal_id desc;
+```
+
+> **Please note:** SQLite foreign key constraints are disabled by default, and must be **[enabled separately for each database connection](https://sqlite.org/foreignkeys.html#fk_enable)**. The latter can be achieved by running `PRAGMA foreign_keys = ON;` command on an open database connection. By running data altering queries without enabling foreign keys prior to that, you may risk putting your database in an inconsistent state.
+
+## Future roadmap
+
+1. Mobile and desktop apps (in progress).
+2. SMP protocol improvements:
+    - SMP queue redundancy and rotation.
+    - Message delivery confirmation.
+    - Support multiple devices.
+3. Privacy-preserving identity server for optional DNS-based contact/group addresses to simplify connection and discovery, but not used to deliver messages:
+    - keep all your contacts and groups even if you lose the domain.
+    - the server doesn't have information about your contacts and groups.
+4. Media server to optimize sending large files to groups.
+5. Channels server for large groups and broadcast channels.
+
+## License
+
+[AGPL v3](./LICENSE)

haskell/images/logo.svg

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packages/analysis_options.yaml

@@ -0,0 +1,44 @@
+include: package:lints/recommended.yaml
+
+linter:
+  rules:
+    prefer_single_quotes: true
+    constant_identifier_names: false
+    always_declare_return_types: true   
+    avoid_dynamic_calls: true
+    avoid_empty_else: true
+    avoid_relative_lib_imports: true
+    avoid_shadowing_type_parameters: true
+    avoid_slow_async_io: true
+    avoid_types_as_parameter_names: true
+    await_only_futures: true
+    camel_case_extensions: true
+    camel_case_types: true
+    cancel_subscriptions: true
+    curly_braces_in_flow_control_structures: true
+    directives_ordering: true
+    empty_catches: true
+    hash_and_equals: true
+    iterable_contains_unrelated_type: true
+    list_remove_unrelated_type: true
+    no_adjacent_strings_in_list: true
+    no_duplicate_case_values: true
+    package_api_docs: true
+    package_prefixed_library_names: true
+    prefer_generic_function_type_aliases: true
+    prefer_is_empty: true
+    prefer_is_not_empty: true
+    prefer_iterable_whereType: true
+    prefer_typing_uninitialized_variables: true
+    sort_child_properties_last: true
+    test_types_in_equals: true
+    throw_in_finally: true
+    unawaited_futures: true
+    unnecessary_import: true
+    unnecessary_null_aware_assignments: true
+    unnecessary_statements: true
+    unnecessary_type_check: true
+    unrelated_type_equality_checks: true
+    unsafe_html: true
+    use_full_hex_values_for_flutter_colors: true
+    valid_regexps: true 

packages/repo_support/.gitignore

@@ -0,0 +1,23 @@
+# See https://www.dartlang.org/guides/libraries/private-files
+
+# Files and directories created by pub
+.dart_tool/
+.packages
+.pub/
+build/
+# If you're building an application, you may want to check-in your pubspec.lock
+pubspec.lock
+
+# Directory created by dartdoc
+# If you don't generate documentation locally you can remove this line.
+doc/api/
+
+# Intellij
+*.idea/
+*.iml
+
+# VS code
+.vscode
+
+# Local
+.local/

packages/repo_support/README.md

@@ -0,0 +1,8 @@
+# repo_support
+
+App flutter utils repo support
+
+```
+dart run tool/run_ci.dart
+
+```

packages/repo_support/pubspec.yaml

@@ -0,0 +1,11 @@
+name: simplex_repo_support
+description: SimpleX build tools
+version: 0.2.0
+publish_to: none
+
+environment:
+  sdk: '>=2.12.0 <3.0.0'
+
+dev_dependencies:
+  dev_test:
+

packages/repo_support/tool/run_ci.dart

@@ -0,0 +1,14 @@
+// ignore_for_file: prefer_double_quotes
+
+import 'package:dev_test/package.dart';
+import 'package:path/path.dart';
+
+Future main() async {
+  for (var dir in [
+    'simplex_app',
+    'simplexmq',
+    'repo_support',
+  ]) {
+    await packageRunCi(join('..', dir));
+  }
+}

packages/simplex_app/.gitignore

@@ -0,0 +1,2 @@
+# Keep for apps
+!pubspec.lock

packages/simplex_app/.metadata

@@ -0,0 +1,10 @@
+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: 4cc385b4b84ac2f816d939a49ea1f328c4e0b48e
+  channel: stable
+
+project_type: app

packages/simplex_app/README.md

@@ -0,0 +1,16 @@
+# simplex_app
+
+A new Flutter project.
+
+## Getting Started
+
+This project is a starting point for a Flutter application.
+
+A few resources to get you started if this is your first Flutter project:
+
+- [Lab: Write your first Flutter app](https://flutter.dev/docs/get-started/codelab)
+- [Cookbook: Useful Flutter samples](https://flutter.dev/docs/cookbook)
+
+For help getting started with Flutter, view our
+[online documentation](https://flutter.dev/docs), which offers tutorials,
+samples, guidance on mobile development, and a full API reference.

packages/simplex_app/analysis_options.yaml

@@ -0,0 +1,45 @@
+# https://dart.dev/guides/language/analysis-options
+include: package:flutter_lints/flutter.yaml
+
+linter:
+  # https://dart-lang.github.io/linter/lints/index.html.
+  rules:
+    prefer_double_quotes: true
+    always_declare_return_types: true   
+    avoid_dynamic_calls: true
+    avoid_empty_else: true
+    avoid_relative_lib_imports: true
+    avoid_shadowing_type_parameters: true
+    avoid_slow_async_io: true
+    avoid_types_as_parameter_names: true
+    await_only_futures: true
+    camel_case_extensions: true
+    camel_case_types: true
+    cancel_subscriptions: true
+    curly_braces_in_flow_control_structures: true
+    directives_ordering: true
+    empty_catches: true
+    hash_and_equals: true
+    iterable_contains_unrelated_type: true
+    list_remove_unrelated_type: true
+    no_adjacent_strings_in_list: true
+    no_duplicate_case_values: true
+    package_api_docs: true
+    package_prefixed_library_names: true
+    prefer_generic_function_type_aliases: true
+    prefer_is_empty: true
+    prefer_is_not_empty: true
+    prefer_iterable_whereType: true
+    prefer_typing_uninitialized_variables: true
+    sort_child_properties_last: true
+    test_types_in_equals: true
+    throw_in_finally: true
+    unawaited_futures: true
+    unnecessary_import: true
+    unnecessary_null_aware_assignments: true
+    unnecessary_statements: true
+    unnecessary_type_check: true
+    unrelated_type_equality_checks: true
+    unsafe_html: true
+    use_full_hex_values_for_flutter_colors: true
+    valid_regexps: true 

packages/simplex_app/android/.gitignore

@@ -0,0 +1,13 @@
+gradle-wrapper.jar
+/.gradle
+/captures/
+/gradlew
+/gradlew.bat
+/local.properties
+GeneratedPluginRegistrant.java
+
+# Remember to never publicly share your keystore.
+# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
+key.properties
+**/*.keystore
+**/*.jks

packages/simplex_app/android/app/build.gradle

@@ -0,0 +1,68 @@
+def localProperties = new Properties()
+def localPropertiesFile = rootProject.file('local.properties')
+if (localPropertiesFile.exists()) {
+    localPropertiesFile.withReader('UTF-8') { reader ->
+        localProperties.load(reader)
+    }
+}
+
+def flutterRoot = localProperties.getProperty('flutter.sdk')
+if (flutterRoot == null) {
+    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
+}
+
+def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
+if (flutterVersionCode == null) {
+    flutterVersionCode = '1'
+}
+
+def flutterVersionName = localProperties.getProperty('flutter.versionName')
+if (flutterVersionName == null) {
+    flutterVersionName = '1.0'
+}
+
+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
+
+android {
+    compileSdkVersion 30
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
+    }
+
+    defaultConfig {
+        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
+        applicationId "chat.simplex.app"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode flutterVersionCode.toInteger()
+        versionName flutterVersionName
+    }
+
+    buildTypes {
+        release {
+            // TODO: Add your own signing config for the release build.
+            // Signing with the debug keys for now, so `flutter run --release` works.
+            signingConfig signingConfigs.debug
+        }
+    }
+}
+
+flutter {
+    source '../..'
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}

packages/simplex_app/android/app/src/debug/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="chat.simplex.app">
+    <!-- Flutter needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

packages/simplex_app/android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,41 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="chat.simplex.app">
+   <application
+        android:label="simplex_chat"
+        android:icon="@mipmap/ic_launcher">
+        <activity
+            android:name=".MainActivity"
+            android:launchMode="singleTop"
+            android:theme="@style/LaunchTheme"
+            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
+            android:hardwareAccelerated="true"
+            android:windowSoftInputMode="adjustResize">
+            <!-- Specifies an Android theme to apply to this Activity as soon as
+                 the Android process has started. This theme is visible to the user
+                 while the Flutter UI initializes. After that, this theme continues
+                 to determine the Window background behind the Flutter UI. -->
+            <meta-data
+              android:name="io.flutter.embedding.android.NormalTheme"
+              android:resource="@style/NormalTheme"
+              />
+            <!-- Displays an Android View that continues showing the launch screen
+                 Drawable until Flutter paints its first frame, then this splash
+                 screen fades out. A splash screen is useful to avoid any visual
+                 gap between the end of Android's launch screen and the painting of
+                 Flutter's first frame. -->
+            <meta-data
+              android:name="io.flutter.embedding.android.SplashScreenDrawable"
+              android:resource="@drawable/launch_background"
+              />
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+        <!-- Don't delete the meta-data below.
+             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
+        <meta-data
+            android:name="flutterEmbedding"
+            android:value="2" />
+    </application>
+</manifest>

packages/simplex_app/android/app/src/main/kotlin/com/example/simplex_app/MainActivity.kt

@@ -0,0 +1,6 @@
+package chat.simplex.app
+
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity: FlutterActivity() {
+}

packages/simplex_app/android/app/src/main/res/drawable-v21/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="?android:colorBackground" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

packages/simplex_app/android/app/src/main/res/drawable/launch_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@android:color/white" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/launch_image" />
+    </item> -->
+</layer-list>

packages/simplex_app/android/app/src/main/res/values-night/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is on -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             Flutter draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+         
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>

packages/simplex_app/android/app/src/main/res/values/styles.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Theme applied to the Android Window while the process is starting when the OS's Dark Mode setting is off -->
+    <style name="LaunchTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <!-- Show a splash screen on the activity. Automatically removed when
+             Flutter draws its first frame -->
+        <item name="android:windowBackground">@drawable/launch_background</item>
+    </style>
+    <!-- Theme applied to the Android Window as soon as the process has started.
+         This theme determines the color of the Android Window while your
+         Flutter UI initializes, as well as behind your Flutter UI while its
+         running.
+         
+         This Theme is only used starting with V2 of Flutter's Android embedding. -->
+    <style name="NormalTheme" parent="@android:style/Theme.Light.NoTitleBar">
+        <item name="android:windowBackground">?android:colorBackground</item>
+    </style>
+</resources>

packages/simplex_app/android/app/src/profile/AndroidManifest.xml

@@ -0,0 +1,7 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="chat.simplex.app">
+    <!-- Flutter needs it to communicate with the running application
+         to allow setting breakpoints, to provide hot reload, etc.
+    -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+</manifest>

packages/simplex_app/android/build.gradle

@@ -0,0 +1,29 @@
+buildscript {
+    ext.kotlin_version = '1.3.50'
+    repositories {
+        google()
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:4.1.0'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.buildDir = '../build'
+subprojects {
+    project.buildDir = "${rootProject.buildDir}/${project.name}"
+    project.evaluationDependsOn(':app')
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

packages/simplex_app/android/gradle.properties

@@ -0,0 +1,3 @@
+org.gradle.jvmargs=-Xmx1536M
+android.useAndroidX=true
+android.enableJetifier=true

packages/simplex_app/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Fri Jun 23 08:50:38 CEST 2017
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-all.zip

packages/simplex_app/android/settings.gradle

@@ -0,0 +1,11 @@
+include ':app'
+
+def localPropertiesFile = new File(rootProject.projectDir, "local.properties")
+def properties = new Properties()
+
+assert localPropertiesFile.exists()
+localPropertiesFile.withReader("UTF-8") { reader -> properties.load(reader) }
+
+def flutterSdkPath = properties.getProperty("flutter.sdk")
+assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
+apply from: "$flutterSdkPath/packages/flutter_tools/gradle/app_plugin_loader.gradle"

packages/simplex_app/build/unit_test_assets/AssetManifest.json

@@ -0,0 +1 @@
+{"packages/cupertino_icons/assets/CupertinoIcons.ttf":["packages/cupertino_icons/assets/CupertinoIcons.ttf"]}

packages/simplex_app/build/unit_test_assets/FontManifest.json

@@ -0,0 +1 @@
+[{"family":"MaterialIcons","fonts":[{"asset":"fonts/MaterialIcons-Regular.otf"}]},{"family":"packages/cupertino_icons/CupertinoIcons","fonts":[{"asset":"packages/cupertino_icons/assets/CupertinoIcons.ttf"}]}]

packages/simplex_app/ios/.gitignore

@@ -0,0 +1,33 @@
+*.mode1v3
+*.mode2v3
+*.moved-aside
+*.pbxuser
+*.perspectivev3
+**/*sync/
+.sconsign.dblite
+.tags*
+**/.vagrant/
+**/DerivedData/
+Icon?
+**/Pods/
+**/.symlinks/
+profile
+xcuserdata
+**/.generated/
+Flutter/App.framework
+Flutter/Flutter.framework
+Flutter/Flutter.podspec
+Flutter/Generated.xcconfig
+Flutter/ephemeral/
+Flutter/app.flx
+Flutter/app.zip
+Flutter/flutter_assets/
+Flutter/flutter_export_environment.sh
+ServiceDefinitions.json
+Runner/GeneratedPluginRegistrant.*
+
+# Exceptions to above rules.
+!default.mode1v3
+!default.mode2v3
+!default.pbxuser
+!default.perspectivev3

packages/simplex_app/ios/Flutter/AppFrameworkInfo.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleDevelopmentRegion</key>
+  <string>en</string>
+  <key>CFBundleExecutable</key>
+  <string>App</string>
+  <key>CFBundleIdentifier</key>
+  <string>io.flutter.flutter.app</string>
+  <key>CFBundleInfoDictionaryVersion</key>
+  <string>6.0</string>
+  <key>CFBundleName</key>
+  <string>App</string>
+  <key>CFBundlePackageType</key>
+  <string>FMWK</string>
+  <key>CFBundleShortVersionString</key>
+  <string>1.0</string>
+  <key>CFBundleSignature</key>
+  <string>????</string>
+  <key>CFBundleVersion</key>
+  <string>1.0</string>
+  <key>MinimumOSVersion</key>
+  <string>9.0</string>
+</dict>
+</plist>

packages/simplex_app/ios/Flutter/Debug.xcconfig

@@ -0,0 +1 @@
+#include "Generated.xcconfig"

packages/simplex_app/ios/Flutter/Release.xcconfig

@@ -0,0 +1 @@
+#include "Generated.xcconfig"

packages/simplex_app/ios/Runner.xcodeproj/project.pbxproj

@@ -0,0 +1,471 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
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+	objects = {
+
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+/* End PBXBuildFile section */
+
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+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 10;
+			files = (
+			);
+			name = "Embed Frameworks";
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXCopyFilesBuildPhase section */
+
+/* Begin PBXFileReference section */
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+		97C147001CF9000F007C117D /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
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+/* End PBXFileReference section */
+
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+			);
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+		};
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+		9740EEB11CF90186004384FC /* Flutter */ = {
+			isa = PBXGroup;
+			children = (
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+				9740EEB31CF90195004384FC /* Generated.xcconfig */,
+			);
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+		};
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+			children = (
+				9740EEB11CF90186004384FC /* Flutter */,
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+			);
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+			);
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+			isa = PBXGroup;
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+				97C147021CF9000F007C117D /* Info.plist */,
+				1498D2321E8E86230040F4C2 /* GeneratedPluginRegistrant.h */,
+				1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */,
+				74858FAE1ED2DC5600515810 /* AppDelegate.swift */,
+				74858FAD1ED2DC5600515810 /* Runner-Bridging-Header.h */,
+			);
+			path = Runner;
+			sourceTree = "<group>";
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+				ORGANIZATIONNAME = "";
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+			defaultConfigurationName = Release;
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+	};
+	rootObject = 97C146E61CF9000F007C117D /* Project object */;
+}

packages/simplex_app/ios/Runner.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>

packages/simplex_app/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

packages/simplex_app/ios/Runner.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>

packages/simplex_app/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -0,0 +1,91 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "1020"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+               BuildableName = "Runner.app"
+               BlueprintName = "Runner"
+               ReferencedContainer = "container:Runner.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+      </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Profile"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <BuildableProductRunnable
+         runnableDebuggingMode = "0">
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "97C146ED1CF9000F007C117D"
+            BuildableName = "Runner.app"
+            BlueprintName = "Runner"
+            ReferencedContainer = "container:Runner.xcodeproj">
+         </BuildableReference>
+      </BuildableProductRunnable>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

packages/simplex_app/ios/Runner.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:Runner.xcodeproj">
+   </FileRef>
+</Workspace>

packages/simplex_app/ios/Runner.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

packages/simplex_app/ios/Runner.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>PreviewsEnabled</key>
+	<false/>
+</dict>
+</plist>

packages/simplex_app/ios/Runner/AppDelegate.swift

@@ -0,0 +1,13 @@
+import UIKit
+import Flutter
+
+@UIApplicationMain
+@objc class AppDelegate: FlutterAppDelegate {
+  override func application(
+    _ application: UIApplication,
+    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
+  ) -> Bool {
+    GeneratedPluginRegistrant.register(with: self)
+    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
+  }
+}

packages/simplex_app/ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,122 @@
+{
+  "images" : [
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-20x20@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-29x29@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-40x40@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "60x60",
+      "idiom" : "iphone",
+      "filename" : "Icon-App-60x60@3x.png",
+      "scale" : "3x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "20x20",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-20x20@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-29x29@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-40x40@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@1x.png",
+      "scale" : "1x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-76x76@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "83.5x83.5",
+      "idiom" : "ipad",
+      "filename" : "Icon-App-83.5x83.5@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "size" : "1024x1024",
+      "idiom" : "ios-marketing",
+      "filename" : "Icon-App-1024x1024@1x.png",
+      "scale" : "1x"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}