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Issue #245 message encryption in web app (#260)
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Added Vigenere cipher algorithm for encryption and decryption of text.
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@Ijaiswalshivam
Ijaiswalshivam authored Jun 2, 2024
2 parents da9ceff + dabdca6 commit 92f4ef9
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Showing 3 changed files with 96 additions and 30 deletions.
31 changes: 16 additions & 15 deletions Talk-In Webapp/lib/presentation/screens/group_chat_screen.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ import 'package:firebase_database/ui/firebase_animated_list.dart';
import 'package:flutter/material.dart';
import 'package:flutter_chat_bubble/chat_bubble.dart';
import 'package:talk_in_web/presentation/screens/group_profile.dart';
import 'package:talk_in_web/services/encryption_service.dart';
import 'package:url_launcher/url_launcher.dart';

import '../../services/data_service.dart';
Expand Down Expand Up @@ -81,7 +82,7 @@ class _GroupChatScreenState extends State<GroupChatScreen> {
maxWidth: MediaQuery.of(context).size.width * 0.7,
),
child: data["tag"]=="text"? Text(
data["Message"]!=null?data["Message"].toString():"Waiting for the message...",
data["Message"]!=null?vigenereDecrypt(data["Message"].toString(), "KEY"):"Waiting for the message...",
style: TextStyle(color: Colors.white),
): data["tag"] == "image"? Column(
children: [
Expand All @@ -95,7 +96,7 @@ class _GroupChatScreenState extends State<GroupChatScreen> {
)
],
),
Text(data["Message"]!=null?data["Message"].toString():"Waiting for the message...", style: TextStyle(color: Colors.white)),
Text(data["Message"]!=null?vigenereDecrypt(data["Message"].toString(), "KEY"):"Waiting for the message...", style: TextStyle(color: Colors.white)),
],
) : data["tag"] == "document"? Column(
children: [
Expand All @@ -109,7 +110,7 @@ class _GroupChatScreenState extends State<GroupChatScreen> {
)
],
),
Text(data["Message"]!=null?data["Message"].toString():"Waiting for the message...", style: TextStyle(color: Colors.white)),
Text(data["Message"]!=null?vigenereDecrypt(data["Message"].toString(), "KEY"):"Waiting for the message...", style: TextStyle(color: Colors.white)),
],
) : Column(
children: [
Expand All @@ -123,7 +124,7 @@ class _GroupChatScreenState extends State<GroupChatScreen> {
)
],
),
Text(data["Message"]!=null?data["Message"].toString():"Waiting for the message...", style: TextStyle(color: Colors.white)),
Text(data["Message"]!=null?vigenereDecrypt(data["Message"].toString(), "KEY"):"Waiting for the message...", style: TextStyle(color: Colors.white)),
],
),
),
Expand All @@ -138,7 +139,7 @@ class _GroupChatScreenState extends State<GroupChatScreen> {
maxWidth: MediaQuery.of(context).size.width * 0.7,
),
child: data["tag"]=="text"? Text(
data["Message"]!=null?data["Message"].toString():"Waiting for the message...",
data["Message"]!=null?vigenereDecrypt(data["Message"].toString(), "KEY"):"Waiting for the message...",
style: TextStyle(color: Colors.black),
): data["tag"] == "image"? Column(
children: [
Expand All @@ -152,7 +153,7 @@ class _GroupChatScreenState extends State<GroupChatScreen> {
)
],
),
Text(data["Message"]!=null?data["Message"].toString():"Waiting for the message...", style: TextStyle(color: Colors.black)),
Text(data["Message"]!=null?vigenereDecrypt(data["Message"].toString(), "KEY"):"Waiting for the message...", style: TextStyle(color: Colors.black)),
],
) : data["tag"] == "document"? Column(
children: [
Expand All @@ -166,7 +167,7 @@ class _GroupChatScreenState extends State<GroupChatScreen> {
)
],
),
Text(data["Message"]!=null?data["Message"].toString():"Waiting for the message...", style: TextStyle(color: Colors.black)),
Text(data["Message"]!=null?vigenereDecrypt(data["Message"].toString(), "KEY"):"Waiting for the message...", style: TextStyle(color: Colors.black)),
],
) : Column(
children: [
Expand All @@ -180,7 +181,7 @@ class _GroupChatScreenState extends State<GroupChatScreen> {
)
],
),
Text(data["Message"]!=null?data["Message"].toString():"Waiting for the message...", style: TextStyle(color: Colors.black)),
Text(data["Message"]!=null?vigenereDecrypt(data["Message"].toString(), "KEY"):"Waiting for the message...", style: TextStyle(color: Colors.black)),
],
),
),
Expand Down Expand Up @@ -249,7 +250,7 @@ class _GroupChatScreenState extends State<GroupChatScreen> {
TextButton(onPressed: (){
Navigator.of(c).pop();
//DataService().addChatToDatabase(context, messageId, "", UserService.userData!["id"].toString(), friendData["id"].toString(),DateTime.now(),"image");
DataService().addGroupChatToDatabase(context, "", UserService.userData!["id"].toString(), "image", DateTime.now(), groupData["id"].toString());
DataService().addGroupChatToDatabase(context, vigenereEncrypt(" ", "KEY"), UserService.userData!["id"].toString(), "image", DateTime.now(), groupData["id"].toString());
Timer(Duration(milliseconds: 500), () {
scrollController.jumpTo(scrollController.position.maxScrollExtent);
});
Expand All @@ -258,7 +259,7 @@ class _GroupChatScreenState extends State<GroupChatScreen> {
if(controller.text.isNotEmpty){
Navigator.of(c).pop();
//DataService().addChatToDatabase(context, messageId, controller.text, UserService.userData!["id"].toString(), friendData["id"].toString(),DateTime.now(),"image");
DataService().addGroupChatToDatabase(context, controller.text, UserService.userData!["id"].toString(), "image", DateTime.now(), groupData["id"].toString());
DataService().addGroupChatToDatabase(context, vigenereEncrypt(controller.text, "KEY"), UserService.userData!["id"].toString(), "image", DateTime.now(), groupData["id"].toString());
Timer(Duration(milliseconds: 500), () {
scrollController.jumpTo(scrollController.position.maxScrollExtent);
});
Expand Down Expand Up @@ -293,7 +294,7 @@ class _GroupChatScreenState extends State<GroupChatScreen> {
TextButton(onPressed: (){
Navigator.of(c).pop();
//DataService().addChatToDatabase(context, messageId, "", UserService.userData!["id"].toString(), friendData["id"].toString(),DateTime.now(),"document");
DataService().addGroupChatToDatabase(context, "", UserService.userData!["id"].toString(), "document", DateTime.now(), groupData["id"].toString());
DataService().addGroupChatToDatabase(context, vigenereEncrypt(" ", "KEY"), UserService.userData!["id"].toString(), "document", DateTime.now(), groupData["id"].toString());
Timer(Duration(milliseconds: 500), () {
scrollController.jumpTo(scrollController.position.maxScrollExtent);
});
Expand All @@ -302,7 +303,7 @@ class _GroupChatScreenState extends State<GroupChatScreen> {
if(controller.text.isNotEmpty){
Navigator.of(c).pop();
//DataService().addChatToDatabase(context, messageId, controller.text, UserService.userData!["id"].toString(), friendData["id"].toString(),DateTime.now(),"document");
DataService().addGroupChatToDatabase(context, controller.text, UserService.userData!["id"].toString(), "document", DateTime.now(), groupData["id"].toString());
DataService().addGroupChatToDatabase(context, vigenereEncrypt(controller.text, "KEY"), UserService.userData!["id"].toString(), "document", DateTime.now(), groupData["id"].toString());
Timer(Duration(milliseconds: 500), () {
scrollController.jumpTo(scrollController.position.maxScrollExtent);
});
Expand Down Expand Up @@ -337,7 +338,7 @@ class _GroupChatScreenState extends State<GroupChatScreen> {
TextButton(onPressed: (){
Navigator.of(c).pop();
//DataService().addChatToDatabase(context, messageId, "", UserService.userData!["id"].toString(), friendData["id"].toString(),DateTime.now(),"audio");
DataService().addGroupChatToDatabase(context, "", UserService.userData!["id"].toString(), "audio", DateTime.now(), groupData["id"].toString());
DataService().addGroupChatToDatabase(context, vigenereEncrypt(" ", "KEY"), UserService.userData!["id"].toString(), "audio", DateTime.now(), groupData["id"].toString());
Timer(Duration(milliseconds: 500), () {
scrollController.jumpTo(scrollController.position.maxScrollExtent);
});
Expand All @@ -346,7 +347,7 @@ class _GroupChatScreenState extends State<GroupChatScreen> {
if(controller.text.isNotEmpty){
Navigator.of(c).pop();
//DataService().addChatToDatabase(context, messageId, controller.text, UserService.userData!["id"].toString(), friendData["id"].toString(),DateTime.now(),"audio");
DataService().addGroupChatToDatabase(context, controller.text, UserService.userData!["id"].toString(), "audio", DateTime.now(), groupData["id"].toString());
DataService().addGroupChatToDatabase(context, vigenereEncrypt(controller.text, "KEY"), UserService.userData!["id"].toString(), "audio", DateTime.now(), groupData["id"].toString());
Timer(Duration(milliseconds: 500), () {
scrollController.jumpTo(scrollController.position.maxScrollExtent);
});
Expand Down Expand Up @@ -384,7 +385,7 @@ class _GroupChatScreenState extends State<GroupChatScreen> {

if(messageController.text.isNotEmpty){
//DataService().addChatToDatabase(context,messageId, messageController.text, UserService.userData!["id"].toString(), friendData["id"].toString(),DateTime.now(),"text");
DataService().addGroupChatToDatabase(context, messageController.text, UserService.userData!["id"].toString(), "text", DateTime.now(), groupData["id"].toString());
DataService().addGroupChatToDatabase(context, vigenereEncrypt(messageController.text, "KEY"), UserService.userData!["id"].toString(), "text", DateTime.now(), groupData["id"].toString());
messageController.clear();
Timer(Duration(milliseconds: 500), () {
scrollController.jumpTo(scrollController.position.maxScrollExtent);
Expand Down
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