From 09e6e2940f85e97dee631021a31594f04457c34e Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Fri, 9 Sep 2022 07:23:46 -0400
Subject: [PATCH] correct max paddign size

---
 libi2pd/SSU2Session.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/libi2pd/SSU2Session.cpp b/libi2pd/SSU2Session.cpp
index b7e33b3a..fab1a397 100644
--- a/libi2pd/SSU2Session.cpp
+++ b/libi2pd/SSU2Session.cpp
@@ -2366,10 +2366,10 @@ namespace transport
 
 	size_t SSU2Session::CreatePaddingBlock (uint8_t * buf, size_t len, size_t minSize)
 	{
-		if (len < minSize) return 0;
-		uint8_t paddingSize = rand () & 0x0F; // 0 - 15
-		if (paddingSize > len) paddingSize = len;
-		else if (paddingSize < minSize) paddingSize = minSize;
+		if (len < 3 || len < minSize) return 0;
+		size_t paddingSize = rand () & 0x0F; // 0 - 15
+		if (paddingSize + 3 > len) paddingSize = len - 3;
+		else if (paddingSize + 3 < minSize) paddingSize = minSize - 3;
 		if (paddingSize)
 		{
 			buf[0] = eSSU2BlkPadding;