Remove cryptoppwin submodule (#754)

third_party/cryptoppwin/include/cryptopp/mdc.h

@@ -0,0 +1,84 @@
+// mdc.h - originally written and placed in the public domain by Wei Dai
+
+/// \file mdc.h
+/// \brief Classes for the MDC message digest
+
+#ifndef CRYPTOPP_MDC_H
+#define CRYPTOPP_MDC_H
+
+#include "seckey.h"
+#include "secblock.h"
+#include "misc.h"
+
+// GCC cast warning
+#define HashWordPtr(x) ((HashWordType*)(void*)(x))
+#define ConstHashWordPtr(x) ((const HashWordType*)(const void*)(x))
+
+NAMESPACE_BEGIN(CryptoPP)
+
+/// \tparam B BlockCipher derived class
+/// \brief MDC_Info cipher information
+template <class B>
+struct MDC_Info : public FixedBlockSize<B::DIGESTSIZE>, public FixedKeyLength<B::BLOCKSIZE>
+{
+	static std::string StaticAlgorithmName() {return std::string("MDC/")+B::StaticAlgorithmName();}
+};
+
+/// \brief MDC cipher
+/// \tparam H HashTransformation derived class
+/// \details MDC() is a construction by Peter Gutmann to turn an iterated hash function into a PRF
+/// \sa <a href="http://www.cryptopp.com/wiki/MDC">MDC</a>
+template <class H>
+class MDC : public MDC_Info<H>
+{
+	/// \brief MDC cipher encryption operation
+	class CRYPTOPP_NO_VTABLE Enc : public BlockCipherImpl<MDC_Info<H> >
+	{
+		typedef typename H::HashWordType HashWordType;
+
+	public:
+		void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params)
+		{
+			CRYPTOPP_UNUSED(params);
+			this->AssertValidKeyLength(length);
+			ConditionalByteReverse(BIG_ENDIAN_ORDER, Key(), ConstHashWordPtr(userKey), this->KEYLENGTH);
+		}
+
+		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
+		{
+			ConditionalByteReverse(BIG_ENDIAN_ORDER, Buffer(), ConstHashWordPtr(inBlock), this->BLOCKSIZE);
+			H::Transform(Buffer(), Key());
+
+			if (xorBlock)
+			{
+				ConditionalByteReverse(BIG_ENDIAN_ORDER, Buffer(), Buffer(), this->BLOCKSIZE);
+				xorbuf(outBlock, xorBlock, m_buffer, this->BLOCKSIZE);
+			}
+			else
+			{
+				ConditionalByteReverse(BIG_ENDIAN_ORDER, HashWordPtr(outBlock), Buffer(), this->BLOCKSIZE);
+			}
+		}
+
+		bool IsPermutation() const {return false;}
+
+		unsigned int OptimalDataAlignment() const {return sizeof(HashWordType);}
+
+	private:
+		HashWordType *Key() {return HashWordPtr(m_key.data());}
+		const HashWordType *Key() const {return ConstHashWordPtr(m_key.data());}
+		HashWordType *Buffer() const {return HashWordPtr(m_buffer.data());}
+
+		// VC60 workaround: bug triggered if using FixedSizeAllocatorWithCleanup
+		FixedSizeSecBlock<byte, MDC_Info<H>::KEYLENGTH, AllocatorWithCleanup<byte> > m_key;
+		mutable FixedSizeSecBlock<byte, MDC_Info<H>::BLOCKSIZE, AllocatorWithCleanup<byte> > m_buffer;
+	};
+
+public:
+	// use BlockCipher interface
+	typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
+};
+
+NAMESPACE_END
+
+#endif