From cd8f06e3ee74f67dfc6deeeeb6b33b869bf705a2 Mon Sep 17 00:00:00 2001
From: jacobk999 <jababakoshy@gmail.com>
Date: Wed, 21 Aug 2024 12:56:14 -0400
Subject: [PATCH] fix: use node-rsa for decryption for higher node
 compatibility

---
 src/server/login.js | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/src/server/login.js b/src/server/login.js
index 68dc27a..fdcec31 100644
--- a/src/server/login.js
+++ b/src/server/login.js
@@ -7,6 +7,7 @@ const chatPlugin = require('./chat')
 const { concat } = require('../transforms/binaryStream')
 const { mojangPublicKeyPem } = require('./constants')
 const debug = require('debug')('minecraft-protocol')
+const NodeRSA = require('node-rsa')
 
 module.exports = function (client, server, options) {
   const mojangPubKey = crypto.createPublicKey(mojangPublicKeyPem)
@@ -106,6 +107,9 @@ module.exports = function (client, server, options) {
       }
     }
 
+    const keyRsa = new NodeRSA(server.serverKey.exportKey('pkcs1'), 'private', { encryptionScheme: 'pkcs1' })
+    keyRsa.setOptions({ environment: 'browser' })
+
     if (packet.hasVerifyToken === false) {
       // 1.19, hasVerifyToken is set and equal to false IF chat signing is enabled
       // This is the default action starting in 1.19.1.
@@ -117,10 +121,7 @@ module.exports = function (client, server, options) {
     } else {
       const encryptedToken = packet.hasVerifyToken ? packet.crypto.verifyToken : packet.verifyToken
       try {
-        const decryptedToken = crypto.privateDecrypt({
-          key: server.serverKey.exportKey(),
-          padding: crypto.constants.RSA_PKCS1_PADDING
-        }, encryptedToken)
+        const decryptedToken = keyRsa.decrypt(encryptedToken)
 
         if (!client.verifyToken.equals(decryptedToken)) {
           client.end('DidNotEncryptVerifyTokenProperly')
@@ -131,13 +132,9 @@ module.exports = function (client, server, options) {
         return
       }
     }
-
     let sharedSecret
     try {
-      sharedSecret = crypto.privateDecrypt({
-        key: server.serverKey.exportKey(),
-        padding: crypto.constants.RSA_PKCS1_PADDING
-      }, packet.sharedSecret)
+      sharedSecret = keyRsa.decrypt(packet.sharedSecret)
     } catch (e) {
       client.end('DidNotEncryptVerifyTokenProperly')
       return