From 0c89b3ccba7c9b7332ab67ae1936aff51ca62367 Mon Sep 17 00:00:00 2001
From: NingSun <ning.sun@intel.com>
Date: Thu, 8 Feb 2018 08:34:03 -0800
Subject: Initial sshsm project structure

Issue-ID: AAF-94
Change-Id: I5e82fff418e7567b161acf9b98013a9b85ffc5b4
Signed-off-by: NingSun <ning.sun@intel.com>
---
 SoftHSMv2/src/lib/crypto/OSSLDES.cpp | 165 +++++++++++++++++++++++++++++++++++
 1 file changed, 165 insertions(+)
 create mode 100644 SoftHSMv2/src/lib/crypto/OSSLDES.cpp

(limited to 'SoftHSMv2/src/lib/crypto/OSSLDES.cpp')

diff --git a/SoftHSMv2/src/lib/crypto/OSSLDES.cpp b/SoftHSMv2/src/lib/crypto/OSSLDES.cpp
new file mode 100644
index 0000000..4fb56b5
--- /dev/null
+++ b/SoftHSMv2/src/lib/crypto/OSSLDES.cpp
@@ -0,0 +1,165 @@
+/*
+ * Copyright (c) 2010 SURFnet bv
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*****************************************************************************
+ OSSLDES.cpp
+
+ OpenSSL (3)DES implementation
+ *****************************************************************************/
+
+#include "config.h"
+#include "OSSLDES.h"
+#include <algorithm>
+#include "odd.h"
+
+bool OSSLDES::wrapKey(const SymmetricKey* /*key*/, const SymWrap::Type /*mode*/, const ByteString& /*in*/, ByteString& /*out*/)
+{
+	ERROR_MSG("DES does not support key wrapping");
+
+	return false;
+}
+
+bool OSSLDES::unwrapKey(const SymmetricKey* /*key*/, const SymWrap::Type /*mode*/, const ByteString& /*in*/, ByteString& /*out*/)
+{
+	ERROR_MSG("DES does not support key unwrapping");
+
+	return false;
+}
+
+const EVP_CIPHER* OSSLDES::getCipher() const
+{
+	if (currentKey == NULL) return NULL;
+
+	// Check currentKey bit length; 3DES only supports 56-bit, 112-bit or 168-bit keys 
+	if (
+#ifndef WITH_FIPS
+	    (currentKey->getBitLen() != 56) &&
+#endif
+	    (currentKey->getBitLen() != 112) &&
+            (currentKey->getBitLen() != 168))
+	{
+		ERROR_MSG("Invalid DES currentKey length (%d bits)", currentKey->getBitLen());
+
+		return NULL;
+	}
+
+	// People shouldn't really be using 56-bit DES keys, generate a warning
+	if (currentKey->getBitLen() == 56)
+	{
+		DEBUG_MSG("CAUTION: use of 56-bit DES keys is not recommended!");
+	}
+
+	// Determine the cipher mode
+	if (currentCipherMode == SymMode::CBC)
+	{
+		switch(currentKey->getBitLen())
+		{
+			case 56:
+				return EVP_des_cbc();
+			case 112:
+				return EVP_des_ede_cbc();
+			case 168:
+				return EVP_des_ede3_cbc();
+		};
+	}
+	else if (currentCipherMode == SymMode::ECB)
+	{
+		switch(currentKey->getBitLen())
+		{
+			case 56:
+				return EVP_des_ecb();
+			case 112:
+				return EVP_des_ede_ecb();
+			case 168:
+				return EVP_des_ede3_ecb();
+		};
+	}
+	else if (currentCipherMode == SymMode::OFB)
+	{
+		switch(currentKey->getBitLen())
+		{
+			case 56:
+				return EVP_des_ofb();
+			case 112:
+				return EVP_des_ede_ofb();
+			case 168:
+				return EVP_des_ede3_ofb();
+		};
+	}
+	else if (currentCipherMode == SymMode::CFB)
+	{
+		switch(currentKey->getBitLen())
+		{
+			case 56:
+				return EVP_des_cfb();
+			case 112:
+				return EVP_des_ede_cfb();
+			case 168:
+				return EVP_des_ede3_cfb();
+		};
+	}
+
+	ERROR_MSG("Invalid DES cipher mode %i", currentCipherMode);
+
+	return NULL;
+}
+
+bool OSSLDES::generateKey(SymmetricKey& key, RNG* rng /* = NULL */)
+{
+	if (rng == NULL)
+	{
+		return false;
+	}
+
+	if (key.getBitLen() == 0)
+	{
+		return false;
+	}
+
+	ByteString keyBits;
+
+	// don't count parity bit
+	if (!rng->generateRandom(keyBits, key.getBitLen()/7))
+	{
+		return false;
+	}
+
+	// fix the odd parity
+	size_t i;
+	for (i = 0; i < keyBits.size(); i++)
+	{
+		keyBits[i] = odd_parity[keyBits[i]];
+	}
+
+	return key.setKeyBits(keyBits);
+}
+
+size_t OSSLDES::getBlockSize() const
+{
+	// The block size is 64 bits
+	return 64 >> 3;
+}
+
-- 
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