From a95e32dece2d505cb760b0c450b3c8f975725530 Mon Sep 17 00:00:00 2001
From: Alejo Thomas Ortega <alejo.ortega@decentraland.org>
Date: Fri, 4 Oct 2024 17:20:36 -0300
Subject: [PATCH] fix: initial hand-shake from archipelago

---
 .../shared/realm/connections/ArchipelagoConnection.ts         | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/browser-interface/packages/shared/realm/connections/ArchipelagoConnection.ts b/browser-interface/packages/shared/realm/connections/ArchipelagoConnection.ts
index ad6ca443af..47e9cb7315 100644
--- a/browser-interface/packages/shared/realm/connections/ArchipelagoConnection.ts
+++ b/browser-interface/packages/shared/realm/connections/ArchipelagoConnection.ts
@@ -74,6 +74,10 @@ export async function createArchipelagoConnection(
 
       switch (message.$case) {
         case 'challengeResponse': {
+          if (!message.challengeResponse.challengeToSign.startsWith('dcl-')) {
+            throw new Error('Invalid initial hand-shake')
+          }
+          
           const authChainJson = JSON.stringify(
             Authenticator.signPayload(identity, message.challengeResponse.challengeToSign)
           )