Add basic support for other regions

src/main/java/emu/nebula/Config.java

@@ -24,6 +24,8 @@ public class Config {
     public RemoteCommand remoteCommand = new RemoteCommand();
 
     public int customDataVersion = 0;
+    public String region = "global";
+    
     public String resourceDir = "./resources";
     public String webFilesDir = "./web";
     public String patchListPath = "./patchlist.json";

src/main/java/emu/nebula/GameConstants.java

@@ -57,7 +57,7 @@ public class GameConstants {
     // Helper functions
     
     public static String getGameVersion() {
-        return VERSION + "." + getDataVersion();
+        return VERSION + "." + getDataVersion() + " (" + Nebula.getConfig().getRegion().toUpperCase() + ")";
     }
     
     public static int getDataVersion() {

src/main/java/emu/nebula/Nebula.java

@@ -17,6 +17,7 @@ import emu.nebula.game.GameContext;
 import emu.nebula.net.PacketHelper;
 import emu.nebula.plugin.PluginManager;
 import emu.nebula.server.HttpServer;
+import emu.nebula.util.AeadHelper;
 import emu.nebula.util.Handbook;
 import emu.nebula.util.JsonUtils;
 import lombok.Getter;
@@ -42,8 +43,9 @@ public class Nebula {
     @Getter private static PluginManager pluginManager;
     
     public static void main(String[] args) {
-        // Load config first
+        // Load config + keys first
         Nebula.loadConfig();
+        AeadHelper.loadKeys();
         
         // Start Server
         Nebula.getLogger().info("Starting Nebula " + getJarVersion());

src/main/java/emu/nebula/util/AeadHelper.java

@@ -18,6 +18,10 @@ import org.bouncycastle.crypto.generators.ECKeyPairGenerator;
 import org.bouncycastle.crypto.generators.HKDFBytesGenerator;
 import org.bouncycastle.crypto.params.*;
 
+import emu.nebula.Nebula;
+import it.unimi.dsi.fastutil.objects.Object2ObjectMap;
+import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
+
 // Official Name: AeadTool
 public class AeadHelper {
     private static final ThreadLocal<SecureRandom> random = new ThreadLocal<>() {
@@ -27,9 +31,34 @@ public class AeadHelper {
         }
     };
     
-    public static final byte[] serverGarbleKey = "xNdVF^XTa6T3HCUATMQ@sKMLzAw&%L!3".getBytes(StandardCharsets.US_ASCII); // Global
-    public static final byte[] serverMetaKey = "ma5Dn2FhC*Xhxy%c".getBytes(StandardCharsets.US_ASCII); // Global
-                    
+    public static byte[] serverGarbleKey = null;
+    public static byte[] serverMetaKey = null;
+    
+    private static final Object2ObjectMap<String, String[]> keys = new Object2ObjectOpenHashMap<>();
+    
+    public static void loadKeys() {
+        // Load keys
+        keys.put("global", new String[] {
+            "ma5Dn2FhC*Xhxy%c",
+            "xNdVF^XTa6T3HCUATMQ@sKMLzAw&%L!3"
+        });
+        keys.put("kr", new String[] {
+            "U9cjHuwGDDx&$drn",
+            "25hdume9H#*6hHn@d9hSF7tekTwN#JYj"
+        });
+        
+        // Get key data
+        var keyData = keys.get(Nebula.getConfig().getRegion().toLowerCase());
+        
+        if (keyData == null) {
+            keyData = keys.get("global"); // Default region
+        }
+        
+        // Set keys
+        serverMetaKey = keyData[0].getBytes(StandardCharsets.US_ASCII);
+        serverGarbleKey = keyData[1].getBytes(StandardCharsets.US_ASCII);
+    }
+    
     public static byte[] generateBytes(int size) {
         byte[] iv = new byte[size];
         random.get().nextBytes(iv);