From 62bd58d356e9fd2b1f5ee25752ebdd455362798b Mon Sep 17 00:00:00 2001
From: JNNGL <45935949+JNNGL@users.noreply.github.com>
Date: Thu, 4 Aug 2022 02:20:25 +1100
Subject: [PATCH] Fix decoding of unsigned messages on 1.19.1 (#814)

---
 .../velocitypowered/proxy/protocol/packet/chat/PlayerChat.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/chat/PlayerChat.java b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/chat/PlayerChat.java
index 212f9cf80..9c675b513 100644
--- a/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/chat/PlayerChat.java
+++ b/proxy/src/main/java/com/velocitypowered/proxy/protocol/packet/chat/PlayerChat.java
@@ -99,7 +99,8 @@ public class PlayerChat implements MinecraftPacket {
       salt = Longs.toByteArray(saltLong);
       signature = signatureBytes;
       expiry = Instant.ofEpochMilli(expiresAt);
-    } else if (saltLong == 0L && signatureBytes.length == 0) {
+    } else if ((protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_19_1) >= 0
+        || saltLong == 0L) && signatureBytes.length == 0) {
       unsigned = true;
     } else {
       throw EncryptionUtils.INVALID_SIGNATURE;