From 9636d82b37ff021cd7ee7a7a0d55e89624e4a183 Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Mon, 3 Aug 2020 18:31:03 -0400
Subject: [PATCH] MixHash for SessionConfirmed processing

---
 libi2pd/NTCP2.cpp | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/libi2pd/NTCP2.cpp b/libi2pd/NTCP2.cpp
index f1f7e59f..4e3b219c 100644
--- a/libi2pd/NTCP2.cpp
+++ b/libi2pd/NTCP2.cpp
@@ -338,11 +338,8 @@ namespace transport
 
 		KDF3Bob ();
 		if (i2p::crypto::AEADChaCha20Poly1305 (m_SessionConfirmedBuffer + 48, m3p2Len - 16, GetH (), 32, GetK (), nonce, m3p2Buf, m3p2Len - 16, false)) // decrypt
-		{
 			// caclulate new h again for KDF data
-			memcpy (m_SessionConfirmedBuffer + 16, m_H, 32); // h || ciphertext
-			SHA256 (m_SessionConfirmedBuffer + 16, m3p2Len + 32, m_H); //h = SHA256(h || ciphertext);
-		}
+			MixHash (m_SessionConfirmedBuffer + 48, m3p2Len); // h = SHA256(h || ciphertext)
 		else
 		{
 			LogPrint (eLogWarning, "NTCP2: SessionConfirmed Part2 AEAD verification failed ");