Coverage Report

Created: 2024-11-21 07:03

/src/cryptopp/rijndael.h
Line
Count
Source
1
// rijndael.h - originally written and placed in the public domain by Wei Dai
2
3
/// \file rijndael.h
4
/// \brief Classes for Rijndael encryption algorithm
5
/// \details All key sizes are supported. The library only provides Rijndael with 128-bit blocks,
6
///   and not 192-bit or 256-bit blocks
7
/// \since Rijndael since Crypto++ 3.1, Intel AES-NI since Crypto++ 5.6.1, ARMv8 AES since Crypto++ 6.0,
8
///   Power8 AES since Crypto++ 6.0, ARMv7 AES since Crypto++ 8.0
9
10
#ifndef CRYPTOPP_RIJNDAEL_H
11
#define CRYPTOPP_RIJNDAEL_H
12
13
#include "seckey.h"
14
#include "secblock.h"
15
16
// Clang 3.3 integrated assembler crash on Linux. Clang 3.4 due to compiler
17
// error with .intel_syntax, http://llvm.org/bugs/show_bug.cgi?id=24232
18
#if CRYPTOPP_BOOL_X32 || defined(CRYPTOPP_DISABLE_MIXED_ASM)
19
# define CRYPTOPP_DISABLE_RIJNDAEL_ASM 1
20
#endif
21
22
#if CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_ARM32 || \
23
  CRYPTOPP_BOOL_ARMV8 || CRYPTOPP_BOOL_PPC32 || CRYPTOPP_BOOL_PPC64
24
# define CRYPTOPP_RIJNDAEL_ADVANCED_PROCESS_BLOCKS 1
25
#endif
26
27
NAMESPACE_BEGIN(CryptoPP)
28
29
/// \brief Rijndael block cipher information
30
/// \details All key sizes are supported. The library only provides Rijndael with 128-bit blocks,
31
///   and not 192-bit or 256-bit blocks
32
/// \since Rijndael since Crypto++ 3.1, Intel AES-NI since Crypto++ 5.6.1, ARMv8 AES since Crypto++ 6.0,
33
///   Power8 AES since Crypto++ 6.0, ARMv7 AES since Crypto++ 8.0
34
struct Rijndael_Info : public FixedBlockSize<16>, public VariableKeyLength<16, 16, 32, 8>
35
{
36
46
  CRYPTOPP_DLL static const char * CRYPTOPP_API StaticAlgorithmName() {return "AES";}
37
};
38
39
/// \brief Rijndael block cipher
40
/// \details All key sizes are supported. The library only provides Rijndael with 128-bit blocks,
41
///   and not 192-bit or 256-bit blocks
42
/// \since Rijndael since Crypto++ 3.1, Intel AES-NI since Crypto++ 5.6.1, ARMv8 AES since Crypto++ 6.0,
43
///   Power8 AES since Crypto++ 6.0, ARMv7 AES since Crypto++ 8.0
44
/// \sa <a href="http://www.cryptopp.com/wiki/Rijndael">Rijndael</a>
45
class CRYPTOPP_DLL Rijndael : public Rijndael_Info, public BlockCipherDocumentation
46
{
47
  /// \brief Rijndael block cipher transformation functions
48
  /// \details Provides implementation common to encryption and decryption
49
  class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<Rijndael_Info>
50
  {
51
  public:
52
    void UncheckedSetKey(const byte *userKey, unsigned int keyLength, const NameValuePairs &params);
53
    std::string AlgorithmProvider() const;
54
    unsigned int OptimalDataAlignment() const;
55
56
  protected:
57
    static void FillEncTable();
58
    static void FillDecTable();
59
60
    // VS2005 workaround: have to put these on separate lines, or error C2487 is triggered in DLL build
61
    static const byte Se[256];
62
    static const byte Sd[256];
63
64
    static const word32 rcon[];
65
66
    unsigned int m_rounds;
67
    SecBlock<word32, AllocatorWithCleanup<word32, true> > m_key;
68
    mutable SecByteBlock m_aliasBlock;
69
  };
70
71
  /// \brief Encryption transformation
72
  /// \details Enc provides implementation for encryption transformation. All key sizes are supported.
73
  ///   The library only provides Rijndael with 128-bit blocks, and not 192-bit or 256-bit blocks
74
  /// \since Rijndael since Crypto++ 3.1, Intel AES-NI since Crypto++ 5.6.1, ARMv8 AES since Crypto++ 6.0,
75
  ///   Power8 AES since Crypto++ 6.0, ARMv7 AES since Crypto++ 8.0
76
  class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Enc : public Base
77
  {
78
  public:
79
    void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
80
#if CRYPTOPP_RIJNDAEL_ADVANCED_PROCESS_BLOCKS
81
    size_t AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags) const;
82
#endif
83
  };
84
85
  /// \brief Decryption transformation
86
  /// \details Dec provides implementation for decryption transformation. All key sizes are supported.
87
  ///   The library only provides Rijndael with 128-bit blocks, and not 192-bit or 256-bit blocks
88
  /// \since Rijndael since Crypto++ 3.1, Intel AES-NI since Crypto++ 5.6.1, ARMv8 AES since Crypto++ 6.0,
89
  ///   Power8 AES since Crypto++ 6.0, ARMv7 AES since Crypto++ 8.0
90
  class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Dec : public Base
91
  {
92
  public:
93
    void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
94
#if CRYPTOPP_RIJNDAEL_ADVANCED_PROCESS_BLOCKS
95
    size_t AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags) const;
96
#endif
97
  };
98
99
public:
100
  typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
101
  typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
102
};
103
104
typedef Rijndael::Encryption RijndaelEncryption;
105
typedef Rijndael::Decryption RijndaelDecryption;
106
107
NAMESPACE_END
108
109
#endif