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| author | Jeffrey Walton <noloader@gmail.com> | 2017-11-20 06:30:21 -0500 |
|---|---|---|
| committer | Jeffrey Walton <noloader@gmail.com> | 2017-11-20 06:30:21 -0500 |
| commit | b9fc470bc78fc7535722cf2fd91dbe8336ceb2fb (patch) | |
| tree | 27179b077c3a2e19e9326d7b1ba3469a2206b4b9 /speck.h | |
| parent | 32154a150faafecfbd38884315065e3e79bf0871 (diff) | |
| download | cryptopp-git-b9fc470bc78fc7535722cf2fd91dbe8336ceb2fb.tar.gz | |
Add SPECK-64 and SPECK-128 lightweight block ciphers (GH #538)
Diffstat (limited to 'speck.h')
| -rw-r--r-- | speck.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/speck.h b/speck.h new file mode 100644 index 00000000..81917ed5 --- /dev/null +++ b/speck.h @@ -0,0 +1,130 @@ +// speck.h - written and placed in the public domain by Jeffrey Walton
+
+//! \file speck.h
+//! \brief Classes for the Speck block cipher
+//! \details Speck is a block cipher designed by Ray Beaulieu, Douglas Shors, Jason Smith,
+//! Stefan Treatman-Clark, Bryan Weeks and Louis Wingers.
+//! \sa <A HREF="http://eprint.iacr.org/2013/404">The SIMON and SPECK Families of
+//! Lightweight Block Ciphers</A> and <A HREF="http://iadgov.github.io/simon-speck/">
+//! The Simon and Speck GitHub</A>
+//! \since Crypto++ 6.0
+
+#ifndef CRYPTOPP_SPECK_H
+#define CRYPTOPP_SPECK_H
+
+#include "config.h"
+#include "seckey.h"
+#include "secblock.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+//! \class SPECK_Info
+//! \brief SPECK block cipher information
+//! \tparam BS block size of the cipher, in bytes
+//! \since Crypto++ 6.0
+template <unsigned int BS, unsigned int D, unsigned int N, unsigned int M>
+struct SPECK_Info : public FixedBlockSize<BS>, VariableKeyLength<D, N, M>
+{
+ static const std::string StaticAlgorithmName()
+ {
+ // Format is Cipher-Blocksize(Keylength)
+ return "SPECK-" + IntToString(BS*8);
+ }
+};
+
+//! \class SPECK_Base
+//! \brief SPECK block cipher base class
+//! \tparam BS block size of the cipher, in bytes
+//! \details User code should use SPECK128, SPECK512, SPECK1024
+//! \sa SPECK32, SPECK48, SPECK64, SPECK96, SPECK128, <a href="http://www.cryptopp.com/wiki/SPECK">SPECK</a>
+//! \since Crypto++ 6.0
+template <class W>
+struct SPECK_Base
+{
+ typedef SecBlock<W, AllocatorWithCleanup<W, true> > AlignedSecBlock;
+ mutable AlignedSecBlock m_wspace; // workspace
+ AlignedSecBlock m_rkey; // round keys
+ unsigned int m_kwords; // number of key words
+};
+
+//! \class SPECK64
+//! \brief SPECK 64-bit block cipher
+//! \details SPECK64 provides 64-bit block size. The valid key sizes are 98-bit and 128-bit.
+//! \note Crypto++ provides a byte oriented implementation
+//! \sa SPECK32, SPECK64, and SPECK128, <a href="http://www.cryptopp.com/wiki/SPECK">SPECK</a>
+//! \since Crypto++ 6.0
+class CRYPTOPP_NO_VTABLE SPECK64 : public SPECK_Info<8, 12, 12, 16>, public BlockCipherDocumentation
+{
+public:
+ //! \brief SPECK block cipher transformation functions
+ //! \details Provides implementation common to encryption and decryption
+ //! \since Crypto++ 6.0
+ class CRYPTOPP_NO_VTABLE Base : protected SPECK_Base<word32>, public BlockCipherImpl<SPECK_Info<8, 12, 12, 16> >
+ {
+ public:
+ std::string AlgorithmName() const {
+ return StaticAlgorithmName() + "(" + IntToString(m_kwords*sizeof(word32)*8) + ")";
+ }
+
+ protected:
+ void UncheckedSetKey(const byte *userKey, unsigned int keyLength, const NameValuePairs ¶ms);
+ };
+
+ class CRYPTOPP_NO_VTABLE Enc : public Base
+ {
+ protected:
+ void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
+ };
+
+ class CRYPTOPP_NO_VTABLE Dec : public Base
+ {
+ protected:
+ void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
+ };
+
+ typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
+ typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
+};
+
+//! \class SPECK128
+//! \brief SPECK 128-bit block cipher
+//! \details SPECK128 provides 128-bit block size. The valid key sizes are 128-bit, 192-bit and 256-bit.
+//! \note Crypto++ provides a byte oriented implementation
+//! \sa SPECK32, SPECK64, and SPECK128, <a href="http://www.cryptopp.com/wiki/SPECK">SPECK</a>
+//! \since Crypto++ 6.0
+class CRYPTOPP_NO_VTABLE SPECK128 : public SPECK_Info<16, 16, 16, 32>, public BlockCipherDocumentation
+{
+public:
+ //! \brief SPECK block cipher transformation functions
+ //! \details Provides implementation common to encryption and decryption
+ //! \since Crypto++ 6.0
+ class CRYPTOPP_NO_VTABLE Base : protected SPECK_Base<word64>, public BlockCipherImpl<SPECK_Info<16, 16, 16, 32> >
+ {
+ public:
+ std::string AlgorithmName() const {
+ return StaticAlgorithmName() + "(" + IntToString(sizeof(word64)*8) + ")";
+ }
+
+ protected:
+ void UncheckedSetKey(const byte *userKey, unsigned int keyLength, const NameValuePairs ¶ms);
+ };
+
+ class CRYPTOPP_NO_VTABLE Enc : public Base
+ {
+ protected:
+ void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
+ };
+
+ class CRYPTOPP_NO_VTABLE Dec : public Base
+ {
+ protected:
+ void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
+ };
+
+ typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
+ typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
+};
+
+NAMESPACE_END
+
+#endif // CRYPTOPP_SPECK_H
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