Password hashing

src/main/java/ciomek/loon/commands/ChangePasswordCommand.java

@@ -3,6 +3,7 @@ package ciomek.loon.commands;
 import ciomek.loon.mqtt.MQTTClient;
 import ciomek.loon.mqtt.payload.ChangePasswordPayload;
 import ciomek.loon.mqtt.payload.RegisterResponse;
+import ciomek.loon.utils.PasswordHasher;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.mojang.brigadier.CommandDispatcher;
 import com.mojang.brigadier.arguments.ArgumentTypeString;
@@ -34,7 +35,9 @@ public class ChangePasswordCommand implements CommandManager.CommandRegistry {
 
 								String password = ArgumentTypeString.getString(context, "password");
 
-								ChangePasswordPayload payload = new ChangePasswordPayload(player.uuid.toString(), password);
+								String hashedPassword = PasswordHasher.hash(password);
+
+								ChangePasswordPayload payload = new ChangePasswordPayload(player.uuid.toString(), hashedPassword);
 
 								MQTTClient.getInstance().publish(payload.topics().get(0), payload.toJson());
 

src/main/java/ciomek/loon/commands/RegisterCommand.java

@@ -3,6 +3,7 @@ package ciomek.loon.commands;
 import ciomek.loon.mqtt.MQTTClient;
 import ciomek.loon.mqtt.payload.RegisterPayload;
 import ciomek.loon.mqtt.payload.RegisterResponse;
+import ciomek.loon.utils.PasswordHasher;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.mojang.brigadier.CommandDispatcher;
 import com.mojang.brigadier.arguments.ArgumentTypeString;
@@ -37,7 +38,9 @@ public class RegisterCommand implements CommandManager.CommandRegistry {
 										String internalUsername = ArgumentTypeString.getString(context, "internalUsername");
 										String password = ArgumentTypeString.getString(context, "password");
 
-										RegisterPayload payload = new RegisterPayload(player.uuid.toString(), password, internalUsername);
+										String hashedPassword = PasswordHasher.hash(password);
+
+										RegisterPayload payload = new RegisterPayload(player.uuid.toString(), hashedPassword, internalUsername);
 
 										MQTTClient.getInstance().publish(payload.topics().get(0), payload.toJson());
 

src/main/java/ciomek/loon/utils/PasswordHasher.java

@@ -0,0 +1,10 @@
+package ciomek.loon.utils;
+
+import de.mkammerer.argon2.Argon2Factory;
+
+public class PasswordHasher {
+	public static String hash(String password) {
+		var argon2 = Argon2Factory.create();
+		return argon2.hash(3, 65536, 1, password.toCharArray());
+	}
+}