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207 lines
8.4 KiB
207 lines
8.4 KiB
4 years ago
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// speck.h - written and placed in the public domain by Jeffrey Walton
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/// \file speck.h
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/// \brief Classes for the Speck block cipher
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/// \details Speck is a block cipher designed by Ray Beaulieu, Douglas Shors, Jason Smith,
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/// Stefan Treatman-Clark, Bryan Weeks and Louis Wingers.
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/// \sa <A HREF="http://eprint.iacr.org/2013/404">The SIMON and SPECK Families of
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/// Lightweight Block Ciphers</A>, <A HREF="http://iadgov.github.io/simon-speck/">
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/// The Simon and Speck GitHub</A> and <A HREF="https://www.cryptopp.com/wiki/SPECK">
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/// SPECK</A> on the Crypto++ wiki.
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/// \since Crypto++ 6.0
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#ifndef CRYPTOPP_SPECK_H
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#define CRYPTOPP_SPECK_H
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#include "config.h"
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#include "seckey.h"
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#include "secblock.h"
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#if CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X86 || \
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CRYPTOPP_BOOL_ARM32 || CRYPTOPP_BOOL_ARMV8 || \
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CRYPTOPP_BOOL_PPC32 || CRYPTOPP_BOOL_PPC64
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# ifndef CRYPTOPP_DISABLE_SPECK_SIMD
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# define CRYPTOPP_SPECK128_ADVANCED_PROCESS_BLOCKS 1
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# endif
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#endif
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// Yet another SunStudio/SunCC workaround. Failed self tests
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// in SSE code paths on i386 for SunStudio 12.3 and below.
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#if defined(__SUNPRO_CC) && (__SUNPRO_CC <= 0x5120)
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# undef CRYPTOPP_SPECK128_ADVANCED_PROCESS_BLOCKS
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#endif
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NAMESPACE_BEGIN(CryptoPP)
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/// \brief SPECK block cipher information
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/// \tparam L block size of the cipher, in bytes
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/// \tparam D default key length, in bytes
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/// \tparam N minimum key length, in bytes
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/// \tparam M maximum key length, in bytes
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/// \since Crypto++ 6.0
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template <unsigned int L, unsigned int D, unsigned int N, unsigned int M>
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struct SPECK_Info : public FixedBlockSize<L>, VariableKeyLength<D, N, M>
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{
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/// \brief The algorithm name
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/// \returns the algorithm name
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/// \details StaticAlgorithmName returns the algorithm's name as a static
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/// member function.
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static const std::string StaticAlgorithmName()
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{
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// Format is Cipher-Blocksize(Keylength)
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return "SPECK-" + IntToString(L*8);
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}
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};
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/// \brief SPECK block cipher base class
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/// \tparam W the word type
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/// \details User code should use SPECK64 or SPECK128
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/// \sa SPECK64, SPECK128, <a href="http://www.cryptopp.com/wiki/SPECK">SPECK</a>
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/// \since Crypto++ 6.0
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template <class W>
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struct SPECK_Base
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{
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virtual ~SPECK_Base() {}
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SPECK_Base() : m_kwords(0), m_rounds(0) {}
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typedef SecBlock<W, AllocatorWithCleanup<W, true> > AlignedSecBlock;
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mutable AlignedSecBlock m_wspace; // workspace
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AlignedSecBlock m_rkeys; // round keys
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unsigned int m_kwords; // number of key words
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unsigned int m_rounds; // number of rounds
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};
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/// \brief SPECK 64-bit block cipher
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/// \details Speck is a block cipher designed by Ray Beaulieu, Douglas Shors, Jason Smith,
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/// Stefan Treatman-Clark, Bryan Weeks and Louis Wingers.
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/// \details SPECK64 provides 64-bit block size. The valid key sizes are 96-bit and 128-bit.
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/// \sa SPECK64, SPECK128, <A HREF="http://eprint.iacr.org/2013/404">The SIMON and SPECK
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/// Families of Lightweight Block Ciphers</A>, <A HREF="http://iadgov.github.io/simon-speck/">
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/// The Simon and Speck GitHub</A>, <a href="http://www.cryptopp.com/wiki/SPECK">SPECK</a> on the
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/// Crypto++ wiki
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/// \since Crypto++ 6.0
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class CRYPTOPP_NO_VTABLE SPECK64 : public SPECK_Info<8, 12, 12, 16>, public BlockCipherDocumentation
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{
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public:
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/// \brief SPECK64 block cipher base implementation
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/// \details Provides implementation common to encryption and decryption
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/// \since Crypto++ 6.0
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class CRYPTOPP_NO_VTABLE Base : protected SPECK_Base<word32>, public BlockCipherImpl<SPECK_Info<8, 12, 12, 16> >
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{
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public:
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/// \brief The algorithm name
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/// \returns the algorithm name
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/// \details AlgorithmName returns the algorithm's name as a
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/// member function.
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std::string AlgorithmName() const {
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return StaticAlgorithmName() + (m_kwords == 0 ? "" :
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"(" + IntToString(m_kwords*sizeof(word32)*8) + ")");
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}
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std::string AlgorithmProvider() const;
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/// \brief Provides input and output data alignment for optimal performance.
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/// \return the input data alignment that provides optimal performance
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/// \sa GetAlignment() and OptimalBlockSize()
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unsigned int OptimalDataAlignment() const;
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protected:
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void UncheckedSetKey(const byte *userKey, unsigned int keyLength, const NameValuePairs ¶ms);
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};
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/// \brief SPECK64 encryption transformation
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/// \details Enc provides the encryption transformation.
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/// All key sizes are supported.
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/// \since Crypto++ 6.0
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class CRYPTOPP_NO_VTABLE Enc : public Base
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{
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public:
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void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
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};
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/// \brief SPECK64 decryption transformation
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/// \details Dec provides the decryption transformation.
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/// All key sizes are supported.
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/// \since Crypto++ 6.0
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class CRYPTOPP_NO_VTABLE Dec : public Base
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{
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public:
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void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
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};
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typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
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typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
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};
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/// \brief SPECK 128-bit block cipher
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/// \details Speck is a block cipher designed by Ray Beaulieu, Douglas Shors, Jason Smith,
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/// Stefan Treatman-Clark, Bryan Weeks and Louis Wingers.
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/// \details SPECK128 provides 128-bit block size. The valid key sizes are 128-bit, 192-bit and 256-bit.
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/// \sa SPECK64, SPECK128, <A HREF="http://eprint.iacr.org/2013/404">The SIMON and SPECK
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/// Families of Lightweight Block Ciphers</A>, <A HREF="http://iadgov.github.io/simon-speck/">
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/// The Simon and Speck GitHub</A>, <a href="http://www.cryptopp.com/wiki/SPECK">SPECK</a> on the
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/// Crypto++ wiki
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/// \since Crypto++ 6.0
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class CRYPTOPP_NO_VTABLE SPECK128 : public SPECK_Info<16, 16, 16, 32>, public BlockCipherDocumentation
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{
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public:
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/// \brief SPECK128 block cipher base implementation
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/// \details Provides implementation common to encryption and decryption
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/// \since Crypto++ 6.0
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class CRYPTOPP_NO_VTABLE Base : protected SPECK_Base<word64>, public BlockCipherImpl<SPECK_Info<16, 16, 16, 32> >
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{
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public:
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/// \brief The algorithm name
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/// \returns the algorithm name
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/// \details AlgorithmName returns the algorithm's name as a
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/// member function.
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std::string AlgorithmName() const {
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return StaticAlgorithmName() + (m_kwords == 0 ? "" :
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"(" + IntToString(m_kwords*sizeof(word64)*8) + ")");
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}
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std::string AlgorithmProvider() const;
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/// \brief Provides input and output data alignment for optimal performance.
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/// \return the input data alignment that provides optimal performance
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/// \sa GetAlignment() and OptimalBlockSize()
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unsigned int OptimalDataAlignment() const;
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protected:
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void UncheckedSetKey(const byte *userKey, unsigned int keyLength, const NameValuePairs ¶ms);
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};
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/// \brief SPECK128 encryption transformation
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/// \details Enc provides the encryption transformation.
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/// All key sizes are supported.
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/// \since Crypto++ 6.0
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class CRYPTOPP_NO_VTABLE Enc : public Base
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{
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public:
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void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
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#if CRYPTOPP_SPECK128_ADVANCED_PROCESS_BLOCKS
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size_t AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags) const;
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#endif
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};
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/// \brief SPECK128 decryption transformation
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/// \details Dec provides the decryption transformation.
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/// All key sizes are supported.
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/// \since Crypto++ 6.0
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class CRYPTOPP_NO_VTABLE Dec : public Base
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{
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public:
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void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
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#if CRYPTOPP_SPECK128_ADVANCED_PROCESS_BLOCKS
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size_t AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags) const;
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#endif
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};
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typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
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typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
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};
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NAMESPACE_END
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#endif // CRYPTOPP_SPECK_H
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