diff options
| author | Jeffrey Walton <noloader@gmail.com> | 2017-11-23 11:41:40 -0500 |
|---|---|---|
| committer | Jeffrey Walton <noloader@gmail.com> | 2017-11-23 11:41:40 -0500 |
| commit | 2c8a618a039af991fe4e0917175fb11d257a763d (patch) | |
| tree | fbcf10be19eee4c858542bd2fd941c0d0dc904ee /sm4.h | |
| parent | 2e63e4674745015dbf54c2e4ccb597db5c576c57 (diff) | |
| download | cryptopp-git-2c8a618a039af991fe4e0917175fb11d257a763d.tar.gz | |
Add SM4 block ciphers (GH #540)
Diffstat (limited to 'sm4.h')
| -rw-r--r-- | sm4.h | 75 |
1 files changed, 75 insertions, 0 deletions
@@ -0,0 +1,75 @@ +// sm4.h - written and placed in the public domain by Jeffrey Walton and Han Lulu
+
+//! \file sm4.h
+//! \brief Classes for the SM4 block cipher
+//! \details SM4 is a Chinese national block cipher.
+//! \sa <A HREF="http://eprint.iacr.org/2008/329.pdf">SMS4 Encryption Algorithm for Wireless Networks</A>
+//! \since Crypto++ 6.0
+
+#ifndef CRYPTOPP_SM4_H
+#define CRYPTOPP_SM4_H
+
+#include "config.h"
+#include "seckey.h"
+#include "secblock.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+//! \class SM4_Info
+//! \brief SM4 block cipher information
+//! \since Crypto++ 6.0
+struct SM4_Info : public FixedBlockSize<16>, FixedKeyLength<16>
+{
+ static const std::string StaticAlgorithmName()
+ {
+ return "SM4";
+ }
+};
+
+//! \file sm4.h
+//! \brief Classes for the SM4 block cipher
+//! \details SM4 is a Chinese national block cipher.
+//! \sa <A HREF="http://eprint.iacr.org/2008/329.pdf">SMS4 Encryption Algorithm for Wireless Networks</A>
+//! \since Crypto++ 6.0
+class CRYPTOPP_NO_VTABLE SM4 : public SM4_Info, public BlockCipherDocumentation
+{
+public:
+ //! \brief SM4 block cipher transformation functions
+ //! \details Provides implementation common to encryption and decryption
+ //! \since Crypto++ 6.0
+ class CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<SM4_Info>
+ {
+ protected:
+ void UncheckedSetKey(const byte *userKey, unsigned int keyLength, const NameValuePairs ¶ms);
+ protected:
+ SecBlock<word32, AllocatorWithCleanup<word32> > m_rkeys;
+ mutable SecBlock<word32, AllocatorWithCleanup<word32> > m_wspace;
+ };
+
+ //! \brief Provides implementation for encryption transformation
+ //! \details Enc provides implementation for encryption transformation. All key
+ //! sizes are supported.
+ //! \since Crypto++ 6.0
+ class CRYPTOPP_NO_VTABLE Enc : public Base
+ {
+ protected:
+ void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
+ };
+
+ //! \brief Provides implementation for encryption transformation
+ //! \details Dec provides implementation for decryption transformation. All key
+ //! sizes are supported.
+ //! \since Crypto++ 6.0
+ 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_SM4_H
|