From e67c8fd64f667e5722ffadc5670bde75218c87c2 Mon Sep 17 00:00:00 2001
From: Luke1410 <luke1410@slikesoft.com>
Date: Fri, 19 Jul 2019 23:48:40 +0200
Subject: [PATCH] - fix CCryptoManager::DecryptSessionData() overwriting first
 data block, if to be decrypted data is larger than a single block (#255)

---
 Source/src/crypto/cryptomanager.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/src/crypto/cryptomanager.cpp b/Source/src/crypto/cryptomanager.cpp
index 6cb000521..2864f7459 100644
--- a/Source/src/crypto/cryptomanager.cpp
+++ b/Source/src/crypto/cryptomanager.cpp
@@ -123,7 +123,7 @@ namespace SLNet
 				}
 				RakAssert(static_cast<size_t>(bytesWritten1) <= inOutBufferSize);
 				int bytesWritten2;
-				if (EVP_DecryptFinal_ex(&m_decryptionContext, outBuffer, &bytesWritten2) == 0) {
+				if (EVP_DecryptFinal_ex(&m_decryptionContext, outBuffer + bytesWritten1, &bytesWritten2) == 0) {
 					return false; // failed final decryption step
 				}
 				RakAssert(static_cast<size_t>(bytesWritten1) + static_cast<size_t>(bytesWritten2) <= inOutBufferSize);