File: rijndael.h

package info (click to toggle)
libcrypto++ 5.6.4-7
  • links: PTS
  • area: main
  • in suites: stretch
  • size: 11,892 kB
  • ctags: 13,256
  • sloc: cpp: 69,231; sh: 4,117; asm: 4,090; makefile: 363
file content (84 lines) | stat: -rw-r--r-- 3,043 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
// rijndael.h - written and placed in the public domain by Wei Dai

//! \file rijndael.h
//! \brief Classes for Rijndael encryption algorithm
//! \details All key sizes are supported. The library only provides Rijndael with 128-bit blocks,
//!   and not 192-bit or 256-bit blocks

#ifndef CRYPTOPP_RIJNDAEL_H
#define CRYPTOPP_RIJNDAEL_H

#include "seckey.h"
#include "secblock.h"

// Clang 3.3 integrated assembler crash on Linux
#if CRYPTOPP_BOOL_X32 || (defined(CRYPTOPP_LLVM_CLANG_VERSION) && (CRYPTOPP_LLVM_CLANG_VERSION < 30400))
# define CRYPTOPP_DISABLE_RIJNDAEL_ASM
#endif

NAMESPACE_BEGIN(CryptoPP)

//! \brief Rijndael block cipher information
struct Rijndael_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 16, 32, 8>
{
	CRYPTOPP_DLL static const char * CRYPTOPP_API StaticAlgorithmName() {return CRYPTOPP_RIJNDAEL_NAME;}
};

//! \brief Rijndael block cipher implementation details
//! \sa <a href="http://www.weidai.com/scan-mirror/cs.html#Rijndael">Rijndael</a>
class CRYPTOPP_DLL Rijndael : public Rijndael_Info, public BlockCipherDocumentation
{
	//! \brief Rijndael block cipher data processing functionss
	//! \details Provides implementation common to encryption and decryption
	class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Rijndael_Info>
	{
	public:
		void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);

	protected:
		static void FillEncTable();
		static void FillDecTable();

		// VS2005 workaround: have to put these on seperate lines, or error C2487 is triggered in DLL build
		static const byte Se[256];
		static const byte Sd[256];

		static const word32 rcon[];

		unsigned int m_rounds;
		FixedSizeAlignedSecBlock<word32, 4*15> m_key;
	};

	//! \brief Rijndael block cipher data processing functions
	//! \details Provides implementation for encryption transformation
	class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Enc : public Base
	{
	public:
		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
#if CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X86
		size_t AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags) const;
#endif
	};

	//! \brief Rijndael block cipher data processing functions
	//! \details Provides implementation for decryption transformation
	class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Dec : public Base
	{
	public:
		void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
#if CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE
		size_t AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags) const;
#endif
	};

public:
	typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
	typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
};

typedef Rijndael::Encryption RijndaelEncryption;
typedef Rijndael::Decryption RijndaelDecryption;

NAMESPACE_END

#endif