From 56b6de69624bffd56de3f74363f64b5eb28f239c Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Fri, 25 Mar 2022 17:57:59 -0400
Subject: [PATCH] correct header decryption for Data message

---
 libi2pd/SSU2.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libi2pd/SSU2.cpp b/libi2pd/SSU2.cpp
index f336ee80..746d5bce 100644
--- a/libi2pd/SSU2.cpp
+++ b/libi2pd/SSU2.cpp
@@ -530,7 +530,8 @@ namespace transport
 	void SSU2Session::ProcessData (uint8_t * buf, size_t len)
 	{
 		Header header;
-		memcpy (header.buf, buf, 16);
+		header.ll[0] = m_SourceConnID;
+		memcpy (header.buf + 8, buf + 8, 8);
 		header.ll[1] ^= CreateHeaderMask (m_KeyDataReceive + 32, buf + (len - 12));
 		if (header.h.type != eSSU2Data) 
 		{