import java.io.IOException;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import service.EncryptedMessage;

import service.EncryptionService;

import service.UnknownApplicationException;

/**

* Servlet implementation class DecryptionServlet

*/

@WebServlet("/decrypt")

public class DecryptionServlet extends HttpServlet {

private static final long serialVersionUID = 1L;

/**

* @see HttpServlet#HttpServlet()

*/

public DecryptionServlet() {

super();

// TODO Auto-generated constructor stub

}

/**

* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)

*/

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

String appid = request.getParameter("appid");

String token = request.getParameter("token");

String message = request.getParameter("message");

String tAppid = request.getParameter("targetAppID");

String key = request.getParameter("key");

String iv = request.getParameter("iv");

JsonBuilder json = new JsonBuilder();

if(appid != null) {

EncryptionService service = EncryptionService.getInstance();

try {

String plainText = service.decrypt(appid, token, tAppid, message, key, iv);

json.put("result", "1");

json.put("message", plainText);

} catch (UnknownApplicationException e) {

json.put("result", "-1");

}

}

response.setContentType("application/json");

response.setCharacterEncoding("UTF-8");

response.getWriter().write(json.getJson());

}

}