From 0b2c8b09c6eb3ddce22fa88c34a640881f8f2177 Mon Sep 17 00:00:00 2001
From: Mounir IDRASSI <mounir.idrassi@idrix.fr>
Date: Tue, 9 Aug 2016 09:54:00 +0200
Subject: Windows: Add Magma cipher (GOST-89)

---
 src/Crypto/GostCipher.h | 61 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 src/Crypto/GostCipher.h

(limited to 'src/Crypto/GostCipher.h')

diff --git a/src/Crypto/GostCipher.h b/src/Crypto/GostCipher.h
new file mode 100644
index 00000000..9b9e18b4
--- /dev/null
+++ b/src/Crypto/GostCipher.h
@@ -0,0 +1,61 @@
+
+/*
+ Copyright (c) 2008-2011 TrueCrypt Developers Association. All rights reserved.
+
+ Governed by the TrueCrypt License 3.0 the full text of which is contained in
+ the file License.txt included in TrueCrypt binary and source code distribution
+ packages.
+*/
+
+
+
+#ifndef GOST_CIPHER_H
+#define GOST_CIPHER_H
+
+//In unsigned chars
+#define GOST_KEYSIZE	32
+#define GOST_BLOCKSIZE	8
+#define GOST_SBOX_SIZE	16
+
+//Production setting, but can be turned off to compare the algorithm with other implementations
+#define CIPHER_GOST89
+#define GOST_DYNAMIC_SBOXES
+
+#if defined(CIPHER_GOST89)
+
+#ifndef rotl32
+#define rotl32(b, shift) ((b << shift) | (b >> (32 - shift)))
+#endif
+
+typedef unsigned char byte;
+#ifdef GST_WINDOWS_BOOT
+typedef int gst_word;
+typedef long gst_dword;
+typedef unsigned int gst_uword;
+typedef unsigned long gst_udword;
+#else
+typedef short gst_word;
+typedef int gst_dword;
+typedef unsigned short gst_uword;
+typedef unsigned int gst_udword;
+#endif
+
+typedef struct gost_kds
+{
+	byte			key[32];
+	gst_udword	sbox_cvt[256 * 4];
+	byte			sbox[8][16];
+} gost_kds;
+
+#define GOST_KS				(sizeof(gost_kds))
+
+void gost_encrypt(byte *in, byte *out, gost_kds *ks, int count);
+void gost_decrypt(byte *in, byte *out, gost_kds *ks, int count);
+void gost_set_key(byte *key, gost_kds *ks);
+
+#else 
+#define GOST_KS				(0)
+#endif
+
+
+#endif
-- 
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