From f424a18112032cf61d2871a6b91a5af607c171ae Mon Sep 17 00:00:00 2001
From: Kirill Volinsky <mataes2007@gmail.com>
Date: Fri, 20 Jul 2012 16:21:49 +0000
Subject: CryptoPP: changed folder structure

git-svn-id: http://svn.miranda-ng.org/main/trunk@1083 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
---
 plugins/CryptoPP/crypto/src/gf256.cpp | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 plugins/CryptoPP/crypto/src/gf256.cpp

(limited to 'plugins/CryptoPP/crypto/src/gf256.cpp')

diff --git a/plugins/CryptoPP/crypto/src/gf256.cpp b/plugins/CryptoPP/crypto/src/gf256.cpp
new file mode 100644
index 0000000000..3649f75592
--- /dev/null
+++ b/plugins/CryptoPP/crypto/src/gf256.cpp
@@ -0,0 +1,34 @@
+// gf256.cpp - written and placed in the public domain by Wei Dai
+
+#include "pch.h"
+#include "gf256.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+GF256::Element GF256::Multiply(Element a, Element b) const
+{
+	word result = 0, t = b;
+
+	for (unsigned int i=0; i<8; i++)
+	{
+		result <<= 1;
+		if (result & 0x100)
+			result ^= m_modulus;
+
+		t <<= 1;
+		if (t & 0x100)
+			result ^= a;
+	}
+
+	return (GF256::Element) result;
+}
+
+GF256::Element GF256::MultiplicativeInverse(Element a) const
+{
+	Element result = a;
+	for (int i=1; i<7; i++)
+		result = Multiply(Square(result), a);
+	return Square(result);
+}
+
+NAMESPACE_END
-- 
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