FAQ & Reward Receiver Setup

// Headers
Content-Type: application/json
X-Batch-Rewards: true  // Present for batch deliveries

// Body (RSA-encrypted, base64-encoded)
// After decryption, you'll get:
{
  "rewards": [
    {
      "username": "player123",
      "timestamp": 1704567890,
      "serviceName": "Hytale Server List",
      "address": "1.2.3.4"
    }
  ]
}

import javax.crypto.Cipher;
import java.security.*;
import java.security.spec.PKCS8EncodedKeySpec;
import java.util.Base64;
import org.json.*;

public class VoteReceiver {
    private PrivateKey privateKey;
    
    public void loadPrivateKey(String base64Key) throws Exception {
        byte[] keyBytes = Base64.getDecoder().decode(base64Key);
        PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(keyBytes);
        KeyFactory kf = KeyFactory.getInstance("RSA");
        this.privateKey = kf.generatePrivate(spec);
    }
    
    public String handleVoteRequest(String base64Body) throws Exception {
        // Decrypt payload
        byte[] encrypted = Base64.getDecoder().decode(base64Body);
        Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
        cipher.init(Cipher.DECRYPT_MODE, privateKey);
        byte[] decrypted = cipher.doFinal(encrypted);
        String json = new String(decrypted);
        
        // Parse JSON
        JSONObject payload = new JSONObject(json);
        JSONArray rewards = payload.getJSONArray("rewards");
        
        // Process each reward
        for (int i = 0; i < rewards.length(); i++) {
            JSONObject reward = rewards.getJSONObject(i);
            String username = reward.getString("username");
            giveReward(username);
        }
        
        // Return success
        return "{\"status\": \"received\"}";
    }
    
    private void giveReward(String username) {
        // Your reward logic here
    }
}