From e5a9e9239b0cf1001d9b91497b4ff3ab4a190b1f Mon Sep 17 00:00:00 2001
From: Mounir IDRASSI <mounir.idrassi@idrix.fr>
Date: Tue, 4 Oct 2016 13:21:48 +0200
Subject: Crypto: Use SIMD optimized Serpent implementation from Botan. 2.5x
 speed gain factor. Update credits and copyrights notice.

---
 src/Common/Crypto.c  | 38 ++++++++++++++++++++++++++++++++++++--
 src/Common/Crypto.h  |  6 +++++-
 src/Common/Dlgcode.c |  7 ++++---
 src/Common/Xts.c     |  4 ++--
 4 files changed, 47 insertions(+), 8 deletions(-)

(limited to 'src/Common')

diff --git a/src/Common/Crypto.c b/src/Common/Crypto.c
index cae705b6..49ccbde5 100644
--- a/src/Common/Crypto.c
+++ b/src/Common/Crypto.c
@@ -232,6 +232,21 @@ void EncipherBlocks (int cipher, void *dataPtr, void *ks, size_t blockCount)
 		KeRestoreFloatingPointState (&floatingPointState);
 #endif
 	}
+#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE
+	else if (cipher == SERPENT
+			&& (blockCount >= 4)
+			&& HasSSE2()
+#if defined (TC_WINDOWS_DRIVER) && !defined (_WIN64)
+			&& NT_SUCCESS (KeSaveFloatingPointState (&floatingPointState))
+#endif
+		)
+	{
+		serpent_encrypt_blocks (data, data, blockCount, ks);
+#if defined (TC_WINDOWS_DRIVER) && !defined (_WIN64)
+		KeRestoreFloatingPointState (&floatingPointState);
+#endif
+	}
+#endif
 	else if (cipher == GOST89)	{
 			gost_encrypt(data, data, ks, (int)blockCount);
 	}
@@ -312,6 +327,21 @@ void DecipherBlocks (int cipher, void *dataPtr, void *ks, size_t blockCount)
 		KeRestoreFloatingPointState (&floatingPointState);
 #endif
 	}
+#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE
+	else if (cipher == SERPENT
+			&& (blockCount >= 4)
+			&& HasSSE2()
+#if defined (TC_WINDOWS_DRIVER) && !defined (_WIN64)
+			&& NT_SUCCESS (KeSaveFloatingPointState (&floatingPointState))
+#endif
+		)
+	{
+		serpent_decrypt_blocks (data, data, blockCount, ks);
+#if defined (TC_WINDOWS_DRIVER) && !defined (_WIN64)
+		KeRestoreFloatingPointState (&floatingPointState);
+#endif
+	}
+#endif
 	else if (cipher == GOST89)	{
 			gost_decrypt(data, data, ks, (int)blockCount);
 	}
@@ -383,8 +413,12 @@ int CipherGetKeyScheduleSize (int cipherId)
 
 BOOL CipherSupportsIntraDataUnitParallelization (int cipher)
 {
-	return cipher == AES && IsAesHwCpuSupported() ||
-		cipher == GOST89;
+	return (cipher == AES && IsAesHwCpuSupported()) 
+		|| (cipher == GOST89)
+#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE
+		|| (cipher == SERPENT && HasSSE2())
+#endif
+		;
 }
 
 #endif
diff --git a/src/Common/Crypto.h b/src/Common/Crypto.h
index 6a943edf..d654b0c4 100644
--- a/src/Common/Crypto.h
+++ b/src/Common/Crypto.h
@@ -193,7 +193,11 @@ typedef struct
 #endif
 
 #include "Aes_hw_cpu.h"
-#include "Serpent.h"
+#if !defined (TC_WINDOWS_BOOT)
+#	include "SerpentFast.h"
+#else
+#	include "Serpent.h"
+#endif
 #include "Twofish.h"
 
 #include "Rmd160.h"
diff --git a/src/Common/Dlgcode.c b/src/Common/Dlgcode.c
index 810b6e8a..ae6fcd2d 100644
--- a/src/Common/Dlgcode.c
+++ b/src/Common/Dlgcode.c
@@ -1214,10 +1214,11 @@ BOOL CALLBACK AboutDlgProc (HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM lParam
 			L"Copyright \xA9 2003-2012 TrueCrypt Developers Association. All Rights Reserved.\r\n"
 			L"Copyright \xA9 1998-2000 Paul Le Roux. All Rights Reserved.\r\n"
 			L"Copyright \xA9 1998-2008 Brian Gladman. All Rights Reserved.\r\n"
-			L"Copyright \xA9 2002-2004 Mark Adler. All Rights Reserved.\r\n"
+			L"Copyright \xA9 1995-2013 Jean-loup Gailly and Mark Adler.\r\n"
 			L"Copyright \xA9 2016 Disk Cryptography Services for EFI (DCS), Alex Kolotnikov.\r\n"
-			L"Copyright \xA9 1990-2002 Info-ZIP. All rights reserved.\r\n"
-			L"Copyright \xA9 2013, Alexey Degtyarev. All rights reserved.\r\n\r\n"
+			L"Copyright \xA9 Dieter Baron and Thomas Klausner.\r\n"
+			L"Copyright \xA9 2013, Alexey Degtyarev. All rights reserved.\r\n"
+			L"Copyright \xA9 1999-2013,2014,2015,2016 Jack Lloyd. All rights reserved.\r\n\r\n"
 
 			L"This software as a whole:\r\n"
 			L"Copyright \xA9 2013-2016 IDRIX. All rights reserved.\r\n\r\n"
diff --git a/src/Common/Xts.c b/src/Common/Xts.c
index 02977887..87c9de00 100644
--- a/src/Common/Xts.c
+++ b/src/Common/Xts.c
@@ -68,7 +68,7 @@ static void EncryptBufferXTSParallel (unsigned __int8 *buffer,
 {
 	unsigned __int8 finalCarry;
 	unsigned __int8 whiteningValues [ENCRYPTION_DATA_UNIT_SIZE];
-	unsigned __int8 whiteningValue [BYTES_PER_XTS_BLOCK];
+	CRYPTOPP_ALIGN_DATA(16) unsigned __int8 whiteningValue [BYTES_PER_XTS_BLOCK];
 	unsigned __int8 byteBufUnitNo [BYTES_PER_XTS_BLOCK];
 	unsigned __int64 *whiteningValuesPtr64 = (unsigned __int64 *) whiteningValues;
 	unsigned __int64 *whiteningValuePtr64 = (unsigned __int64 *) whiteningValue;
@@ -208,7 +208,7 @@ static void EncryptBufferXTSNonParallel (unsigned __int8 *buffer,
 					   int cipher)
 {
 	unsigned __int8 finalCarry;
-	unsigned __int8 whiteningValue [BYTES_PER_XTS_BLOCK];
+	CRYPTOPP_ALIGN_DATA(16) unsigned __int8 whiteningValue [BYTES_PER_XTS_BLOCK];
 	unsigned __int8 byteBufUnitNo [BYTES_PER_XTS_BLOCK];
 	unsigned __int64 *whiteningValuePtr64 = (unsigned __int64 *) whiteningValue;
 	unsigned __int64 *bufPtr = (unsigned __int64 *) buffer;
-- 
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