Add decentralized cryptographic identity

ui/network/join_game_page.gd

@@ -45,6 +45,7 @@ const DIRECT_WORKFLOW_HELP: String = (
 
 var _network_session: NetworkSession
 var _saved_servers: SavedServerStore
+var _server_trust: ServerTrustStore
 var _gameplay_context: bool = false
 var _mode: Mode = Mode.DIRECT
 var _visible_entries: Array[SavedServerEntry] = []
@@ -89,10 +90,12 @@ func setup(
 	network_session: NetworkSession,
 	saved_servers: SavedServerStore,
 	gameplay_context: bool,
+	server_trust: ServerTrustStore = null,
 ) -> void:
 	_network_session = network_session
 	_saved_servers = saved_servers
 	_gameplay_context = gameplay_context
+	_server_trust = server_trust
 	if not _network_session.state_changed.is_connected(_on_state_changed):
 		_network_session.state_changed.connect(_on_state_changed)
 	if not _network_session.status_message_changed.is_connected(
@@ -447,6 +450,17 @@ func _format_entry_details(entry: SavedServerEntry) -> String:
 	if _mode == Mode.SAVED:
 		parts.append("Name: %s" % entry.display_name)
 	parts.append("Address: %s" % entry.normalized_endpoint)
+	if _server_trust != null:
+		var trust := _server_trust.get_record(entry.get_endpoint())
+		if trust.is_empty():
+			parts.append("Host identity: Not verified yet")
+		else:
+			parts.append(
+				"Host identity: %s"
+				% NetworkIdentityCrypto.format_fingerprint(
+					str(trust.get("fingerprint", ""))
+				)
+			)
 	if (
 		not entry.last_observed_server_name.is_empty()
 		and (

ui/pause_menu.gd

@@ -121,6 +121,7 @@ func setup(
 	fishing_spot: FishingSpotType,
 	network_session: NetworkSessionType,
 	saved_servers: SavedServerStoreType,
+	server_trust: ServerTrustStore,
 ) -> void:
 	_player = player
 	_save_manager = save_manager
@@ -128,7 +129,7 @@ func setup(
 	_fishing_spot = fishing_spot
 	_network_session = network_session
 	_saved_servers = saved_servers
-	_join_game_page.setup(network_session, saved_servers, true)
+	_join_game_page.setup(network_session, saved_servers, true, server_trust)
 	if not _fishing_spot.bite_activated.is_connected(_on_bite_activated):
 		_fishing_spot.bite_activated.connect(_on_bite_activated)
 

ui/profile_page.gd

@@ -43,6 +43,13 @@ func setup(service: NetworkProfileService) -> void:
 		_service.conflict_result.connect(_on_conflict_result)
 		_service.apply_finished.connect(_on_apply_finished)
 	_load_persisted()
+	var identity_value := find_child("IdentityFingerprint", true, false) as Label
+	if identity_value != null:
+		identity_value.text = "%s  •  Stored on this device" % (
+			NetworkIdentityCrypto.format_fingerprint(
+				_service.get_identity_fingerprint()
+			)
+		)
 
 
 func activate() -> void:
@@ -162,6 +169,19 @@ func _build_ui() -> void:
 	_suggestions.add_theme_constant_override("separation", 8)
 	layout.add_child(_suggestions)
 
+	var identity_label := Label.new()
+	identity_label.text = "identity"
+	identity_label.add_theme_color_override("font_color", Color("302b27"))
+	layout.add_child(identity_label)
+	var identity_value := Label.new()
+	identity_value.name = "IdentityFingerprint"
+	identity_value.text = "Stored on this device"
+	identity_value.tooltip_text = (
+		"This identity helps other players recognize you between sessions."
+	)
+	identity_value.add_theme_color_override("font_color", Color("665e52"))
+	layout.add_child(identity_value)
+
 	var body := HBoxContainer.new()
 	body.size_flags_vertical = Control.SIZE_EXPAND_FILL
 	body.add_theme_constant_override("separation", 18)

ui/title_screen.gd

@@ -231,10 +231,11 @@ func setup(
 	settings_manager: SettingsManagerType,
 	network_session: NetworkSessionType,
 	saved_servers: SavedServerStoreType,
+	server_trust: ServerTrustStore,
 ) -> void:
 	_save_manager = save_manager
 	_settings_manager = settings_manager
-	_join_game_page.setup(network_session, saved_servers, false)
+	_join_game_page.setup(network_session, saved_servers, false, server_trust)
 	_join_game_page.join_requested.connect(join_game_requested.emit)
 	_join_game_page.back_requested.connect(_close_join_game)
 	Input.mouse_mode = Input.MOUSE_MODE_VISIBLE