Remove cryptoppwin submodule (#754)

third_party/cryptoppwin/include/cryptopp/sha3.h

@@ -0,0 +1,106 @@
+// sha3.h - originally written and placed in the public domain by Wei Dai
+
+/// \file sha3.h
+/// \brief Classes for SHA3 message digests
+/// \details The Crypto++ implementation conforms to the FIPS 202 version of SHA3 using F1600 with XOF d=0x06.
+///   Previous behavior (XOF d=0x01) is available in Keccak classes.
+/// \sa <a href="http://en.wikipedia.org/wiki/SHA-3">SHA-3</a>,
+///   <A HREF="http://csrc.nist.gov/groups/ST/hash/sha-3/fips202_standard_2015.html">SHA-3 STANDARD (FIPS 202)</A>.
+/// \since Crypto++ 5.6.2
+
+#ifndef CRYPTOPP_SHA3_H
+#define CRYPTOPP_SHA3_H
+
+#include "cryptlib.h"
+#include "secblock.h"
+#include "misc.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+/// \brief SHA3 message digest base class
+/// \details The Crypto++ implementation conforms to FIPS 202 version of SHA3 using F1600 with XOF d=0x06.
+///   Previous behavior (XOF d=0x01) is available in Keccak classes.
+/// \details SHA3 is the base class for SHA3_224, SHA3_256, SHA3_384 and SHA3_512.
+///   Library users should instantiate a derived class, and only use SHA3
+///   as a base class reference or pointer.
+/// \sa Keccak, SHA3_224, SHA3_256, SHA3_384 and SHA3_512.
+/// \since Crypto++ 5.6.2
+class SHA3 : public HashTransformation
+{
+protected:
+    /// \brief Construct a SHA3
+    /// \param digestSize the digest size, in bytes
+    /// \details SHA3 is the base class for SHA3_224, SHA3_256, SHA3_384 and SHA3_512.
+    ///   Library users should instantiate a derived class, and only use SHA3
+    ///   as a base class reference or pointer.
+    /// \details This constructor was moved to protected at Crypto++ 8.1
+    ///   because users were attempting to create Keccak objects with it.
+    /// \since Crypto++ 5.6.2
+    SHA3(unsigned int digestSize) : m_digestSize(digestSize) {Restart();}
+
+public:
+    unsigned int DigestSize() const {return m_digestSize;}
+    unsigned int OptimalDataAlignment() const {return GetAlignmentOf<word64>();}
+
+    void Update(const byte *input, size_t length);
+    void Restart();
+    void TruncatedFinal(byte *hash, size_t size);
+
+protected:
+    inline unsigned int r() const {return BlockSize();}
+
+    FixedSizeSecBlock<word64, 25> m_state;
+    unsigned int m_digestSize, m_counter;
+};
+
+/// \brief SHA3 message digest template
+/// \tparam T_DigestSize the size of the digest, in bytes
+/// \since Crypto++ 5.6.2
+template<unsigned int T_DigestSize>
+class SHA3_Final : public SHA3
+{
+public:
+    CRYPTOPP_CONSTANT(DIGESTSIZE = T_DigestSize);
+    CRYPTOPP_CONSTANT(BLOCKSIZE = 200 - 2 * DIGESTSIZE);
+    static std::string StaticAlgorithmName()
+        { return "SHA3-" + IntToString(DIGESTSIZE * 8); }
+
+    /// \brief Construct a SHA3-X message digest
+    SHA3_Final() : SHA3(DIGESTSIZE) {}
+
+    /// \brief Provides the block size of the compression function
+    /// \return block size of the compression function, in bytes
+    /// \details BlockSize() will return 0 if the hash is not block based
+    ///   or does not have an equivalent block size. For example, Keccak
+    ///   and SHA-3 do not have a block size, but they do have an equivalent
+    ///   block size called rate expressed as <tt>r</tt>.
+    unsigned int BlockSize() const { return BLOCKSIZE; }
+
+    std::string AlgorithmName() const { return StaticAlgorithmName(); }
+
+private:
+#if !defined(__BORLANDC__)
+    // ensure there was no underflow in the math
+    CRYPTOPP_COMPILE_ASSERT(BLOCKSIZE < 200);
+#endif
+};
+
+/// \brief SHA3-224 message digest
+/// \since Crypto++ 5.6.2
+class SHA3_224 : public SHA3_Final<28> {};
+
+/// \brief SHA3-256 message digest
+/// \since Crypto++ 5.6.2
+class SHA3_256 : public SHA3_Final<32> {};
+
+/// \brief SHA3-384 message digest
+/// \since Crypto++ 5.6.2
+class SHA3_384 : public SHA3_Final<48> {};
+
+/// \brief SHA3-512 message digest
+/// \since Crypto++ 5.6.2
+class SHA3_512 : public SHA3_Final<64> {};
+
+NAMESPACE_END
+
+#endif