AES加密算法 C++的AES代碼（轉） 
在VC7.1下編譯調試成功，下面是源代碼 
//AES.H 
#pragma once 


class AES 
{ 
public: 
typedef enum ENUM_KeySize_ 
{ 
BIT128 = 0, 
BIT192, 
BIT256 
}ENUM_KEYSIZE; 
public: 
AES( ENUM_KEYSIZE keysize, BYTE *key ); 
~AES(void); 
void Cipher( BYTE *input, BYTE *output ); 
void InvCipher( BYTE *input, BYTE *output ); 
protected: 
BYTE *RotWord( BYTE *word ); 
BYTE *SubWord( BYTE *word ); 
void AddRoundKey(int round); 
void SubBytes(); 
void InvSubBytes(); 
void ShiftRows(); 
void InvShiftRows(); 
void MixColumns(); 
void InvMixColumns(); 
  static BYTE gfmultby01(BYTE b) 
    { 
      return b; 
    } 

    static BYTE gfmultby02(BYTE b) 
    { 
      if (b < 0x80) 
        return (BYTE)(int)(b <<1); 
      else 
        return (BYTE)( (int)(b << 1) ^ (int)(0x1b) ); 
    } 

    static BYTE gfmultby03(BYTE b) 
    { 
      return (BYTE) ( (int)gfmultby02(b) ^ (int)b ); 
    } 

    static BYTE gfmultby09(BYTE b) 
    { 
      return (BYTE)( (int)gfmultby02(gfmultby02(gfmultby02(b))) ^ 
                    (int)b ); 
    } 

    static BYTE gfmultby0b(BYTE b) 
    { 
      return (BYTE)( (int)gfmultby02(gfmultby02(gfmultby02(b))) ^ 
                    (int)gfmultby02(b) ^ 
                    (int)b ); 
    } 

    static BYTE gfmultby0d(BYTE b) 
    { 
      return (BYTE)( (int)gfmultby02(gfmultby02(gfmultby02(b))) ^ 
                    (int)gfmultby02(gfmultby02(b)) ^ 
                    (int)(b) ); 
    } 

    static BYTE gfmultby0e(BYTE b) 
    { 
      return (BYTE)( (int)gfmultby02(gfmultby02(gfmultby02(b))) ^ 
                    (int)gfmultby02(gfmultby02(b)) ^ 
                    (int)gfmultby02(b) ); 
    } 
int Nb; 
int Nk; 
int Nr; 
BYTE *key;// the seed key. size will be 4 * keySize from ctor. 
typedef struct BYTE4_ 
{ 
  BYTE w[4]; 
}BYTE4; 
BYTE4 *w; 
LPBYTE State[4]; 
/* 
    private byte[,] iSbox;  // inverse Substitution box 
    private byte[,] w;      // key schedule array. 
    private byte[,] Rcon;  // Round constants. 
    private byte[,] State;  // State matrix*/ 

}; 


//AES.CPP 
#include "StdAfx.h" 
#include ".\aes.h" 
const BYTE Sbox[16][16] = {  // populate the Sbox matrix 
/* 0    1    2    3    4    5    6    7    8    9    a    b    c    d    e    f */ 
/*0*/  {0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76}, 
/*1*/  {0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0}, 
/*2*/  {0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15}, 
/*3*/  {0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75}, 
/*4*/  {0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84}, 
/*5*/  {0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf}, 
/*6*/  {0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8}, 
/*7*/  {0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2}, 
/*8*/  {0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73}, 
/*9*/  {0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb}, 
/*a*/  {0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79}, 
/*b*/  {0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08}, 
/*c*/  {0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a}, 
/*d*/  {0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e}, 
/*e*/  {0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf}, 
/*f*/  {0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16} 
}; 

const BYTE iSbox[16][16] = {  // populate the iSbox matrix 
/* 0    1    2    3    4    5    6    7    8    9    a    b    c    d    e    f */ 
/*0*/  {0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb}, 
/*1*/  {0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb}, 
/*2*/  {0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e}, 
/*3*/  {0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25}, 
/*4*/  {0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92}, 
/*5*/  {0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84}, 
/*6*/  {0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06}, 
/*7*/  {0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b}, 
/*8*/  {0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73}, 
/*9*/  {0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e}, 
/*a*/  {0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b}, 
/*b*/  {0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4}, 
/*c*/  {0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f}, 
/*d*/  {0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef}, 
/*e*/  {0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61}, 
/*f*/  {0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d} }; 
const BYTE Rcon[11][4] = { {0x00, 0x00, 0x00, 0x00},  
{0x01, 0x00, 0x00, 0x00}, 
{0x02, 0x00, 0x00, 0x00}, 
{0x04, 0x00, 0x00, 0x00}, 
{0x08, 0x00, 0x00, 0x00}, 
{0x10, 0x00, 0x00, 0x00}, 
{0x20, 0x00, 0x00, 0x00}, 
{0x40, 0x00, 0x00, 0x00}, 
{0x80, 0x00, 0x00, 0x00}, 
{0x1b, 0x00, 0x00, 0x00}, 
{0x36, 0x00, 0x00, 0x00} }; 
BYTE *AES::RotWord( BYTE *word ) 
{ 
  BYTE *result = new BYTE [4]; 
  result[0] = word[1]; 
  result[1] = word[2]; 
  result[2] = word[3]; 
  result[3] = word[0]; 
  delete[] word; 
  return result; 
}; 
BYTE *AES::SubWord( BYTE *word ) 
{ 
  BYTE *result = new BYTE[4]; 
  result[0] = Sbox[ word[0] >> 4][ word[0] & 0x0f ]; 
  result[1] = Sbox[ word[1] >> 4][ word[1] & 0x0f ]; 
  result[2] = Sbox[ word[2] >> 4][ word[2] & 0x0f ]; 
  result[3] = Sbox[ word[3] >> 4][ word[3] & 0x0f ]; 
  delete[] word; 
  return result; 
} 
AES::AES( ENUM_KEYSIZE keysize, BYTE *key ) 
{ 

  this->Nb = 4; 
  switch( keysize ) 
  { 
  case AES::BIT128: 
  this->Nk = 4; 
  this->Nr = 10; 
  break; 
  case AES::BIT192: 
  this->Nk = 6; 
  this->Nr = 12; 
  break; 
  case AES::BIT256: 
  default: 
  this->Nk = 8; 
  this->Nr = 14; 
  break; 
  } 
  this->key = new BYTE[this->Nk * 4]; 
  memcpy( this->key, key, this->Nk * 4 ); 
  this->w = new BYTE4[Nb * (Nr+1)]; 
  for( int row = 0; row < Nk; ++row ) 
  { 
  w[row].w[0] = this->key[4*row]; 
  w[row].w[1] = this->key[4*row+1]; 
  w[row].w[2] = this->key[4*row+2]; 
  w[row].w[3] = this->key[4*row+3]; 
  } 
  BYTE *temp = new BYTE[4]; 
  for( int row = Nk; row < Nb *(Nr + 1); ++ row ) 
  { 
  temp[0] = this->w[row-1].w[0]; 
  temp[1] = this->w[row-1].w[1]; 
  temp[2] = this->w[row-1].w[2]; 
  temp[3] = this->w[row-1].w[3]; 
  if (row % Nk == 0) 
  { 
    temp = SubWord(RotWord(temp));//this change two size 
    temp[0] = (BYTE)( (int)temp[0] ^ (int)Rcon[row/Nk][0] ); 
    temp[1] = (BYTE)( (int)temp[1] ^ (int)Rcon[row/Nk][1] ); 
    temp[2] = (BYTE)( (int)temp[2] ^ (int)Rcon[row/Nk][2] ); 
    temp[3] = (BYTE)( (int)temp[3] ^ (int)Rcon[row/Nk][3] ); 
  } 
  else if ( Nk > 6 && (row % Nk == 4) )  
  { 
    temp = SubWord(temp); 
  } 

  // w[row] = w[row-Nk] xor temp 
  this->w[row].w[0] = (BYTE) ( (int)this->w[row-Nk].w[0] ^ (int)temp[0] ); 
  this->w[row].w[1] = (BYTE) ( (int)this->w[row-Nk].w[1] ^ (int)temp[1] ); 
  this->w[row].w[2] = (BYTE) ( (int)this->w[row-Nk].w[2] ^ (int)temp[2] ); 
  this->w[row].w[3] = (BYTE) ( (int)this->w[row-Nk].w[3] ^ (int)temp[3] ); 
  }//loop 
  delete[] temp; 
  for(int i=0;i<4;i++) 
  { 
  this->State = NULL; 
  } 
} 

AES::~AES(void) 
{ 
  for(int i=0;i<4;i++) 
  { 
  if (this->State != NULL) 
  { 
    delete []this->State; 
  } 
  } 
} 
void AES::Cipher( BYTE *input, BYTE *output ) 
{ 
  if (this->State[0] == NULL) 
  { 
  for(int i=0;i<4;i++) 
  { 
    this->State = new BYTE[this->Nb]; 
  } 
  } 
  for (int i = 0; i < (4 * Nb); ++i) 
  { 
  this->State[i%4][i/4] = input; 
  } 
  AddRoundKey(0); 

  for (int round = 1; round <= (Nr - 1); ++round)  // main round loop 
  { 
  SubBytes(); 
  ShiftRows();  
  MixColumns(); 
  AddRoundKey(round); 
  }  // main round loop 

  SubBytes(); 
  ShiftRows(); 
  AddRoundKey(Nr); 

  // output = state 
  for (int i = 0; i < (4 * Nb); ++i) 
  { 
  output = this->State[i % 4][ i / 4]; 
  } 

} 
void AES::InvCipher( BYTE *input, BYTE *output ) 
{ 
  if (this->State[0] == NULL) 
  { 
  for(int i=0;i<4;i++) 
  { 
    this->State = new BYTE[this->Nb]; 
  } 
  } 

  for (int i = 0; i < (4 * Nb); ++i) 
  { 
  this->State[i % 4][ i / 4] = input; 
  } 

  AddRoundKey(Nr); 

  for (int round = Nr-1; round >= 1; --round)  // main round loop 
  { 
  InvShiftRows(); 
  InvSubBytes(); 
  AddRoundKey(round); 
  InvMixColumns(); 
  }  // end main round loop for InvCipher 

  InvShiftRows(); 
  InvSubBytes(); 
  AddRoundKey(0); 

  // output = state 
  for (int i = 0; i < (4 * Nb); ++i) 
  { 
  output = this->State[i % 4][ i / 4]; 
  } 
} 
void AES::AddRoundKey( int round ) 
{ 
  for (int r = 0; r < 4; ++r) 
  { 
  for (int c = 0; c < 4; ++c) 
  { 
    this->State[r][c] = (BYTE) ( (int)this->State[r][c] ^ (int)w[(round*4)+c].w[r] ); 
  } 
  } 
} 

void AES::SubBytes() 
{ 
  for (int r = 0; r < 4; ++r) 
  { 
  for (int c = 0; c < 4; ++c) 
  { 
    this->State[r][c] = Sbox[ (this->State[r][c] >> 4)][ (this->State[r][c] & 0x0f) ]; 
  } 
  } 
} 
void AES::InvSubBytes() 
{ 
  for (int r = 0; r < 4; ++r) 
  { 
  for (int c = 0; c < 4; ++c) 
  { 
    this->State[r][c] = iSbox[ (this->State[r][c] >> 4)][ (this->State[r][c] & 0x0f) ]; 
  } 
  } 
} 
void AES::ShiftRows() 
{ 
  BYTE4 temp[4]; 
  //  byte[,] temp = new byte[4,4]; 
  for (int r = 0; r < 4; ++r)  // copy State into temp[] 
  { 
  for (int c = 0; c < 4; ++c) 
  { 
    temp[r].w[c] = this->State[r][c]; 
    // temp[r,c] = this.State[r,c]; 
  } 
  } 

  for (int r = 1; r < 4; ++r)  // shift temp into State 
  { 
  for (int c = 0; c < 4; ++c) 
  { 
    this->State[r][c] = temp[ r].w[ (c + r) % Nb ]; 
  } 
  } 
}  // ShiftRows() 
void AES::InvShiftRows() 
{ 
  BYTE4 temp[4]; 
  for (int r = 0; r < 4; ++r)  // copy State into temp[] 
  { 
  for (int c = 0; c < 4; ++c) 
  { 
    temp[r].w[c] = this->State[r][c]; 
  } 
  } 
  for (int r = 1; r < 4; ++r)  // shift temp into State 
  { 
  for (int c = 0; c < 4; ++c) 
  { 
    this->State[r][ (c + r) % Nb ] = temp[r].w[c]; 
  } 
  } 
}  // InvShiftRows() 
void AES::MixColumns() 
{ 
  BYTE4 temp[4]; 
  for (int r = 0; r < 4; ++r)  // copy State into temp[] 
  { 
  for (int c = 0; c < 4; ++c) 
  { 
    temp[r].w[c] = this->State[r][c]; 
  } 
  } 

  for (int c = 0; c < 4; ++c) 
  { 
  this->State[0][c] = (BYTE) ( (int)gfmultby02(temp[0].w[c]) ^ (int)gfmultby03(temp[1].w[c]) ^ 
    (int)gfmultby01(temp[2].w[c]) ^ (int)gfmultby01(temp[3].w[c]) ); 
  this->State[1][c] = (BYTE) ( (int)gfmultby01(temp[0].w[c]) ^ (int)gfmultby02(temp[1].w[c]) ^ 
    (int)gfmultby03(temp[2].w[c]) ^ (int)gfmultby01(temp[3].w[c]) ); 
  this->State[2][c] = (BYTE) ( (int)gfmultby01(temp[0].w[c]) ^ (int)gfmultby01(temp[1].w[c]) ^ 
    (int)gfmultby02(temp[2].w[c]) ^ (int)gfmultby03(temp[3].w[c]) ); 
  this->State[3][c] = (BYTE) ( (int)gfmultby03(temp[0].w[c]) ^ (int)gfmultby01(temp[1].w[c]) ^ 
    (int)gfmultby01(temp[2].w[c]) ^ (int)gfmultby02(temp[3].w[c]) ); 
  } 
}  // MixColumns 
void AES::InvMixColumns() 
{ 
  BYTE4 temp[4]; 
  for (int r = 0; r < 4; ++r)  // copy State into temp[] 
  { 
  for (int c = 0; c < 4; ++c) 
  { 
    temp[r].w[c] = this->State[r][c]; 
  } 
  } 

  for (int c = 0; c < 4; ++c) 
  { 
  this->State[0][c] = (BYTE) ( (int)gfmultby0e(temp[0].w[c]) ^ (int)gfmultby0b(temp[1].w[c]) ^ 
    (int)gfmultby0d(temp[2].w[c]) ^ (int)gfmultby09(temp[3].w[c]) ); 
  this->State[1][c] = (BYTE) ( (int)gfmultby09(temp[0].w[c]) ^ (int)gfmultby0e(temp[1].w[c]) ^ 
    (int)gfmultby0b(temp[2].w[c]) ^ (int)gfmultby0d(temp[3].w[c]) ); 
  this->State[2][c] = (BYTE) ( (int)gfmultby0d(temp[0].w[c]) ^ (int)gfmultby09(temp[1].w[c]) ^ 
    (int)gfmultby0e(temp[2].w[c]) ^ (int)gfmultby0b(temp[3].w[c]) ); 
  this->State[3][c] = (BYTE) ( (int)gfmultby0b(temp[0].w[c]) ^ (int)gfmultby0d(temp[1].w[c]) ^ 
    (int)gfmultby09(temp[2].w[c]) ^ (int)gfmultby0e(temp[3].w[c]) ); 
  } 
}