permissionlesstech/bitchat
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Implement password-protected rooms with encryption

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- Room creators can set/remove passwords for their rooms
- Passwords are used to derive encryption keys via PBKDF2
- All messages in password-protected rooms are encrypted with AES-GCM
- Room protection status is announced to all peers
- Password and room data persists across app launches
- Visual lock indicators for password-protected rooms
- Password prompts when joining protected rooms
- Only room creators can modify password settings
- Encrypted messages show placeholder text if password is unknown
This commit is contained in:
jack
2025-07-05 19:35:37 +02:00
parent 4dec23e216
commit 8d553adc0c
5 changed files with 434 additions and 26 deletions
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bitchat/Views/ContentView.swift
+87 -14
View File
@@ -18,6 +18,11 @@ struct ContentView: View {
@State private var showSidebar = false
@State private var sidebarDragOffset: CGFloat = 0
@State private var showAppInfo = false
@State private var showPasswordInput = false
@State private var passwordInputRoom: String? = nil
@State private var passwordInput = ""
@State private var showPasswordPrompt = false
@State private var passwordPromptInput = ""
private var backgroundColor: Color {
colorScheme == .dark ? Color.black : Color.white
@@ -160,6 +165,40 @@ struct ContentView: View {
.sheet(isPresented: $showAppInfo) {
AppInfoView()
}
.alert("Set Room Password", isPresented: $showPasswordInput) {
SecureField("Password", text: $passwordInput)
Button("Cancel", role: .cancel) {
passwordInput = ""
passwordInputRoom = nil
}
Button("Set Password") {
if let room = passwordInputRoom, !passwordInput.isEmpty {
viewModel.setRoomPassword(passwordInput, for: room)
passwordInput = ""
passwordInputRoom = nil
}
}
} message: {
Text("Enter a password to protect \(passwordInputRoom ?? "room"). Others will need this password to read messages.")
}
.alert("Enter Room Password", isPresented: Binding(
get: { viewModel.showPasswordPrompt },
set: { viewModel.showPasswordPrompt = $0 }
)) {
SecureField("Password", text: $passwordPromptInput)
Button("Cancel", role: .cancel) {
passwordPromptInput = ""
viewModel.passwordPromptRoom = nil
}
Button("Join") {
if let room = viewModel.passwordPromptRoom, !passwordPromptInput.isEmpty {
viewModel.joinRoom(room, password: passwordPromptInput)
passwordPromptInput = ""
}
}
} message: {
Text("This room is password protected. Enter the password to join.")
}
}
private var headerView: some View {
@@ -517,6 +556,13 @@ struct ContentView: View {
}
}) {
HStack {
// Lock icon for password protected rooms
if viewModel.passwordProtectedRooms.contains(room) {
Image(systemName: "lock.fill")
.font(.system(size: 10))
.foregroundColor(secondaryTextColor)
}
Text(room)
.font(.system(size: 14, design: .monospaced))
.foregroundColor(viewModel.currentRoom == room ? Color.blue : textColor)
@@ -534,22 +580,49 @@ struct ContentView: View {
.clipShape(Capsule())
}
// Leave button
// Room controls
if viewModel.currentRoom == room {
Button(action: {
viewModel.leaveRoom(room)
}) {
Text("leave")
.font(.system(size: 10, design: .monospaced))
.foregroundColor(secondaryTextColor)
.padding(.horizontal, 8)
.padding(.vertical, 2)
.overlay(
RoundedRectangle(cornerRadius: 4)
.stroke(secondaryTextColor.opacity(0.5), lineWidth: 1)
)
HStack(spacing: 4) {
// Password button for room creator
if viewModel.roomCreators[room] == viewModel.meshService.myPeerID {
Button(action: {
// Toggle password protection
if viewModel.passwordProtectedRooms.contains(room) {
viewModel.removeRoomPassword(for: room)
} else {
// Show password input
showPasswordInput = true
passwordInputRoom = room
}
}) {
Image(systemName: viewModel.passwordProtectedRooms.contains(room) ? "lock.open" : "lock")
.font(.system(size: 10))
.foregroundColor(secondaryTextColor)
.padding(4)
.overlay(
RoundedRectangle(cornerRadius: 4)
.stroke(secondaryTextColor.opacity(0.5), lineWidth: 1)
)
}
.buttonStyle(.plain)
}
// Leave button
Button(action: {
viewModel.leaveRoom(room)
}) {
Text("leave")
.font(.system(size: 10, design: .monospaced))
.foregroundColor(secondaryTextColor)
.padding(.horizontal, 8)
.padding(.vertical, 2)
.overlay(
RoundedRectangle(cornerRadius: 4)
.stroke(secondaryTextColor.opacity(0.5), lineWidth: 1)
)
}
.buttonStyle(.plain)
}
.buttonStyle(.plain)
}
}
.padding(.horizontal, 12)