From 474d52f80574d2f86ac3a3d76cd194122e0b2fb2 Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Thu, 27 Apr 2017 10:12:22 -0400
Subject: [PATCH] minor performance improvements

---
 libi2pd/Gost.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/libi2pd/Gost.cpp b/libi2pd/Gost.cpp
index 688035eb..351dac10 100644
--- a/libi2pd/Gost.cpp
+++ b/libi2pd/Gost.cpp
@@ -323,7 +323,7 @@ namespace crypto
 			for (int i = 63; i >= 0; i--)
 			{
 				uint16_t sum = buf[i] + other.buf[i] + carry;
-				ret.buf[i] = sum & 0xFF;
+				ret.buf[i] = sum;
 				carry = sum >> 8;
 			}	
 			return ret;
@@ -333,9 +333,10 @@ namespace crypto
 		{
 			for (int i = 63; i >= 0; i--)
 			{
+				if (!c) return;	
 				c += buf[i];
 				buf[i] = c;
-				c >>= 8;			
+				c >>= 8;		
 			}
 		}