pinkeshdarji

    MessageListView(
      messageBuilder: _messageBuilder,
    )
    -----------
    Widget _messageBuilder(
      BuildContext context,
      MessageDetails details,
      List<Message> messages,
    ) {
      Message message = details.message;

pinkeshdarji

	   MessageInput(  
	  disableAttachments: true,  
	  preMessageSending: (Message message) async {  
	    String encryptedMessage = await AppE2EE().encrypt(message.text);  
	    Message newmessage = message.copyWith(text: encryptedMessage);  
	    return newmessage;  
	  },  
	),

pinkeshdarji

	    Future<void> main() async {
	      WidgetsFlutterBinding.
	    ();
	      final client = StreamChatClient(
	        'ue75xxvdjwwa',
	        logLevel: Level.
	    ,
	      );
	      await AppE2EE().generateKeys();
	      Map<String, dynamic> publicKeyJwk =

pinkeshdarji

	    await AppE2EE().generateKeys();
	      Map<String, dynamic> publicKeyJwk =
	          await AppE2EE().keyPair.publicKey.exportJsonWebKey();

	    --------------------------------------
	    await client.connectUser(
	      User(
	        id: 'Pinkesh',
	        extraData: {
	          'image': 'https://picsum.photos/id/1025/200/300',

pinkeshdarji

	    import 'dart:typed_data';
	    import 'package:shared_preferences/shared_preferences.dart';
	    import 'package:webcrypto/webcrypto.dart';
	    class AppE2EE {
	      static final AppE2EE 
	    = AppE2EE._internal();
	      factory AppE2EE() {
	        return 
	    ;
	      }

pinkeshdarji

    Future<String> decrypt(String encryptedMessage) async {
      // 1.
      aesGcmSecretKey = await AesGcmSecretKey.
    (derivedBits);

     // 2.
     List<int> message = Uint8List.fromList(encryptedMessage.codeUnits);

    // 3. 
     Uint8List decryptdBytes = await    aesGcmSecretKey.decryptBytes(message, iv);

pinkeshdarji

    final Uint8List iv = Uint8List.fromList('Initialization Vector'.codeUnits);

    Future<String> encrypt(String message) async {

    // 1. 
     aesGcmSecretKey = await AesGcmSecretKey.
    (derivedBits);

    // 2.
      List<int> list = message.codeUnits;

pinkeshdarji

Future<void> _deriveKey() async {

//1. Alice's public key
Map<String, dynamic> publicjwk = json.decode(
    '{"kty": "EC", "crv": "P-256", "x": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx", "y": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"}');
EcdhPublicKey ecdhPublicKey =
    await EcdhPublicKey.
(publicjwk, EllipticCurve.p256);

//2. Bob's private key

pinkeshdarji

	    Future<void> _generateKeys() async {
	      //1. Generate keys
	      KeyPair<EcdhPrivateKey, EcdhPublicKey> keyPair =
	          await EcdhPrivateKey.
	    (EllipticCurve.p256);
	      Map<String, dynamic> publicKeyJwk =
	          await keyPair.publicKey.exportJsonWebKey();
	      Map<String, dynamic> privateKeyJwk =
	          await keyPair.privateKey.exportJsonWebKey();
	    }

pinkeshdarji

final theme =
    ThemeData(primarySwatch: Colors.teal, brightness: Brightness.dark);
MaterialApp(
  debugShowCheckedModeBanner: false,
  theme: theme,
  builder: (context, child) => StreamChat(
    streamChatThemeData: StreamChatThemeData.fromTheme(theme),
    client: client,
    child: child,
  ),