在包装的经过中最重要出现转手多少个难点,待加密的字符串&lt

#include “stdafx.h”
#include “string.h”
#include “AES.h”

  很多时候会用到AES加密。下边是加密解密方法:

AES::AES(unsigned char* key)
{
unsigned char sBox[] =
{ /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
0x63,0x7c,0x77,0x7b,0xf2,0x6b,0x6f,0xc5,0x30,0x01,0x67,0x2b,0xfe,0xd7,0xab,0x76,
/*0*/
0xca,0x82,0xc9,0x7d,0xfa,0x59,0x47,0xf0,0xad,0xd4,0xa2,0xaf,0x9c,0xa4,0x72,0xc0,
/*1*/
0xb7,0xfd,0x93,0x26,0x36,0x3f,0xf7,0xcc,0x34,0xa5,0xe5,0xf1,0x71,0xd8,0x31,0x15,
/*2*/
0x04,0xc7,0x23,0xc3,0x18,0x96,0x05,0x9a,0x07,0x12,0x80,0xe2,0xeb,0x27,0xb2,0x75,
/*3*/
0x09,0x83,0x2c,0x1a,0x1b,0x6e,0x5a,0xa0,0x52,0x3b,0xd6,0xb3,0x29,0xe3,0x2f,0x84,
/*4*/
0x53,0xd1,0x00,0xed,0x20,0xfc,0xb1,0x5b,0x6a,0xcb,0xbe,0x39,0x4a,0x4c,0x58,0xcf,
/*5*/
0xd0,0xef,0xaa,0xfb,0x43,0x4d,0x33,0x85,0x45,0xf9,0x02,0x7f,0x50,0x3c,0x9f,0xa8,
/*6*/
0x51,0xa3,0x40,0x8f,0x92,0x9d,0x38,0xf5,0xbc,0xb6,0xda,0x21,0x10,0xff,0xf3,0xd2,
/*7*/
0xcd,0x0c,0x13,0xec,0x5f,0x97,0x44,0x17,0xc4,0xa7,0x7e,0x3d,0x64,0x5d,0x19,0x73,
/*8*/
0x60,0x81,0x4f,0xdc,0x22,0x2a,0x90,0x88,0x46,0xee,0xb8,0x14,0xde,0x5e,0x0b,0xdb,
/*9*/
0xe0,0x32,0x3a,0x0a,0x49,0x06,0x24,0x5c,0xc2,0xd3,0xac,0x62,0x91,0x95,0xe4,0x79,
/*a*/
0xe7,0xc8,0x37,0x6d,0x8d,0xd5,0x4e,0xa9,0x6c,0x56,0xf4,0xea,0x65,0x7a,0xae,0x08,
/*b*/
0xba,0x78,0x25,0x2e,0x1c,0xa6,0xb4,0xc6,0xe8,0xdd,0x74,0x1f,0x4b,0xbd,0x8b,0x8a,
/*c*/
0x70,0x3e,0xb5,0x66,0x48,0x03,0xf6,0x0e,0x61,0x35,0x57,0xb9,0x86,0xc1,0x1d,0x9e,
/*d*/
0xe1,0xf8,0x98,0x11,0x69,0xd9,0x8e,0x94,0x9b,0x1e,0x87,0xe9,0xce,0x55,0x28,0xdf,
/*e*/
0x8c,0xa1,0x89,0x0d,0xbf,0xe6,0x42,0x68,0x41,0x99,0x2d,0x0f,0xb0,0x54,0xbb,0x16
/*f*/
};
unsigned char invsBox[256] =
{ /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */
0x52,0x09,0x6a,0xd5,0x30,0x36,0xa5,0x38,0xbf,0x40,0xa3,0x9e,0x81,0xf3,0xd7,0xfb,
/*0*/
0x7c,0xe3,0x39,0x82,0x9b,0x2f,0xff,0x87,0x34,0x8e,0x43,0x44,0xc4,0xde,0xe9,0xcb,
/*1*/
0x54,0x7b,0x94,0x32,0xa6,0xc2,0x23,0x3d,0xee,0x4c,0x95,0x0b,0x42,0xfa,0xc3,0x4e,
/*2*/
0x08,0x2e,0xa1,0x66,0x28,0xd9,0x24,0xb2,0x76,0x5b,0xa2,0x49,0x6d,0x8b,0xd1,0x25,
/*3*/
0x72,0xf8,0xf6,0x64,0x86,0x68,0x98,0x16,0xd4,0xa4,0x5c,0xcc,0x5d,0x65,0xb6,0x92,
/*4*/
0x6c,0x70,0x48,0x50,0xfd,0xed,0xb9,0xda,0x5e,0x15,0x46,0x57,0xa7,0x8d,0x9d,0x84,
/*5*/
0x90,0xd8,0xab,0x00,0x8c,0xbc,0xd3,0x0a,0xf7,0xe4,0x58,0x05,0xb8,0xb3,0x45,0x06,
/*6*/
0xd0,0x2c,0x1e,0x8f,0xca,0x3f,0x0f,0x02,0xc1,0xaf,0xbd,0x03,0x01,0x13,0x8a,0x6b,
/*7*/
0x3a,0x91,0x11,0x41,0x4f,0x67,0xdc,0xea,0x97,0xf2,0xcf,0xce,0xf0,0xb4,0xe6,0x73,
/*8*/
0x96,0xac,0x74,0x22,0xe7,0xad,0x35,0x85,0xe2,0xf9,0x37,0xe8,0x1c,0x75,0xdf,0x6e,
/*9*/
0x47,0xf1,0x1a,0x71,0x1d,0x29,0xc5,0x89,0x6f,0xb7,0x62,0x0e,0xaa,0x18,0xbe,0x1b,
/*a*/
0xfc,0x56,0x3e,0x4b,0xc6,0xd2,0x79,0x20,0x9a,0xdb,0xc0,0xfe,0x78,0xcd,0x5a,0xf4,
/*b*/
0x1f,0xdd,0xa8,0x33,0x88,0x07,0xc7,0x31,0xb1,0x12,0x10,0x59,0x27,0x80,0xec,0x5f,
/*c*/
0x60,0x51,0x7f,0xa9,0x19,0xb5,0x4a,0x0d,0x2d,0xe5,0x7a,0x9f,0x93,0xc9,0x9c,0xef,
/*d*/
0xa0,0xe0,0x3b,0x4d,0xae,0x2a,0xf5,0xb0,0xc8,0xeb,0xbb,0x3c,0x83,0x53,0x99,0x61,
/*e*/
0x17,0x2b,0x04,0x7e,0xba,0x77,0xd6,0x26,0xe1,0x69,0x14,0x63,0x55,0x21,0x0c,0x7d
/*f*/
};
memcpy(Sbox, sBox, 256);
memcpy(InvSbox, invsBox, 256);
KeyExpansion(key, w);
}

/// <summary>
  /// AES加密字符串
  /// </summary>
  /// <param name=”encryptString”>待加密的字符串</param>
  /// <param name=”keySize”>密钥类型(密钥位数)<see
cref=”Aes.KeySize”>Aes.KeySize</see></param>
  /// <param name=”keyBytes”>对称密钥</param>
  ///
<returns>加密成功再次回到加密后的字符串,失利重回源串</returns>
  public static string EncryptAES(string encryptString, Aes.KeySize
keySize, Byte [] keyBytes)
  {
   byte[] inputByteArray =
System.Text.Encoding.UTF8.GetBytes(encryptString);
   byte[] outputByteArray = null;

AES::~AES()
{

   AesEncryptCore(keySize, keyBytes, inputByteArray, out
outputByteArray);

}

   return Convert.ToBase64String(outputByteArray);
  }

unsigned char* AES::Cipher(unsigned char* input)
{
unsigned char state[4][4];
int i,r,c;

 

for(r=0; r<4; r++)
{
for(c=0; c<4 ;c++)
{
state[r][c] = input[c*4+r];
}
}

  /// <summary>
  /// AES解密字符串
  /// </summary>
  /// <param name=”decryptString”>待解密的字符串</param>
  /// <param
name=”decryptKey”>解密密钥,必要为陆人,和加密密钥相同</param>
  ///
<returns>解密成功再次回到解密后的字符串,失败返源串</returns>
  public static string DecryptAES(string decryptString, Aes.KeySize
keySize, Byte [] keyBytes)
  {
   byte[] inputByteArray = Convert.FromBase64String(decryptString);
   byte[] outputByteArray = null;
   

AddRoundKey(state,w[0]);

   AesDecryptCore(keySize, keyBytes, inputByteArray, out
outputByteArray);
   string outString =
System.Text.Encoding.UTF8.GetString(outputByteArray);

for(i=1; i<=10; i++)
{
SubBytes(state);
ShiftRows(state);
if(i!=10)MixColumns(state);
AddRoundKey(state,w[i]);
}

   return outString;

for(r=0; r<4; r++)
{
for(c=0; c<4 ;c++)
{
input[c*4+r] = state[r][c];
}
}

  }

return input;
}

namespace AesLib
{
 public class Aes  // Advanced Encryption Standard
 {
  public enum KeySize { Bits128, Bits192, Bits256 };  // key size, in
bits, for construtor

unsigned char* AES::InvCipher(unsigned char* input)
{
unsigned char state[4][4];
int i,r,c;

  private int Nb;         // block size in 32-bit words.  Always 4 for
AES.  (128 bits).
  private int Nk;         // key size in 32-bit words.  4, 6, 8.  (128,
192, 256 bits).
  private int Nr;         // number of rounds. 10, 12, 14.

for(r=0; r<4; r++)
{
for(c=0; c<4 ;c++)
{
state[r][c] = input[c*4+r];
}
}

  private byte[] key;     // the seed key. size will be 4 * keySize
from ctor.
  private byte[,] Sbox;   // Substitution box
  private byte[,] iSbox;  // inverse Substitution box
  private byte[,] w;      // key schedule array.
  private byte[,] Rcon;   // Round constants.
  private byte[,] State;  // State matrix

AddRoundKey(state, w[10]);
for(i=9; i>=0; i–)
{
InvShiftRows(state);
InvSubBytes(state);
AddRoundKey(state, w[i]);
if(i)
{
InvMixColumns(state);
}
}

  public Aes(KeySize keySize, byte[] keyBytes)
  {
   SetNbNkNr(keySize);
 
   this.key = new byte[this.Nk * 4];  // 16, 24, 32 bytes
   keyBytes.CopyTo(this.key, 0);

for(r=0; r<4; r++)
{
for(c=0; c<4 ;c++)
{
input[c*4+r] = state[r][c];
}
}

   BuildSbox();
   BuildInvSbox();
   BuildRcon();
   KeyExpansion();  // expand the seed key into a key schedule and store
in w
 
  }  // Aes constructor

return input;
}

  public void Cipher(byte[] input, byte[] output)  // encipher
16-bit input
  {
   // state = input
   this.State = new byte[4,Nb];  // always [4,4]
   for (int i = 0; i < (4 * Nb); ++i)
   {
    this.State[i % 4, i / 4] = input[i];
   }

void* AES::Cipher(void* input, int length)
{
unsigned char* in = (unsigned char*) input;
int i;
if(!length)
{
while(*(in+length++));
in = (unsigned char*) input;
}
for(i=0; i<length; i+=16)
{
Cipher(in+i);
}
return input;
}

   AddRoundKey(0);
         
   for (int round = 1; round <= (Nr – 1); ++round)  // main round
loop
   {
    SubBytes();
    ShiftRows(); 
    MixColumns();
    AddRoundKey(round);
   }  // main round loop

void* AES::InvCipher(void* input, int length)
{
unsigned char* in = (unsigned char*) input;
int i;
for(i=0; i<length; i+=16)
{
InvCipher(in+i);
}
return input;
}

   SubBytes();
   ShiftRows();
   AddRoundKey(Nr);
           
   // output = state
   for (int i = 0; i < (4 * Nb); ++i)
   {
    output[i] = this.State[i % 4, i / 4];
   }

void AES::KeyExpansion(unsigned char* key, unsigned char
w[][4][4])
{
int i,j,r,c;
unsigned char rc[] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80,
0x1b, 0x36};
for(r=0; r<4; r++)
{
for(c=0; c<4; c++)
{
w[0][r][c] = key[r+c*4];
}
}
for(i=1; i<=10; i++)
{
for(j=0; j<4; j++)
{
unsigned char t[4];
for(r=0; r<4; r++)
{
t[r] = j ? w[i][r][j-1] : w[i-1][r][3];
}
if(j == 0)
{
unsigned char temp = t[0];
for(r=0; r<3; r++)
{
t[r] = Sbox[t[(r+1)%4]];
}
t[3] = Sbox[temp];
t[0] ^= rc[i-1];
}
for(r=0; r<4; r++)
{
w[i][r][j] = w[i-1][r][j] ^ t[r];
}
}
}
}

  }  // Cipher()

unsigned char AES::FFmul(unsigned char a, unsigned char b)
{
unsigned char bw[4];
unsigned char res=0;
int i;
bw[0] = b;
for(i=1; i<4; i++)
{
bw[i] = bw[i-1]<<1;
if(bw[i-1]&0x80)
{
bw[i]^=0x1b;
}
}
for(i=0; i<4; i++)
{
if((a>>i)&0x01)
{
res ^= bw[i];
}
}
return res;
}

  public void InvCipher(byte[] input, byte[] output)  // decipher
16-bit input
  {
   // state = input
   this.State = new byte[4,Nb];  // always [4,4]
   for (int i = 0; i < (4 * Nb); ++i)
   {
    this.State[i % 4, i / 4] = input[i];
   }

void AES::SubBytes(unsigned char state[][4])
{
int r,c;
for(r=0; r<4; r++)
{
for(c=0; c<4; c++)
{
state[r][c] = Sbox[state[r][c]];
}
}
}

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

void AES::ShiftRows(unsigned char state[][4])
{
unsigned char t[4];
int r,c;
for(r=1; r<4; r++)
{
for(c=0; c<4; c++)
{
t[c] = state[r][(c+r)%4];
}
for(c=0; c<4; c++)
{
state[r][c] = t[c];
}
}
}

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

void AES::MixColumns(unsigned char state[][4])
{
unsigned char t[4];
int r,c;
for(c=0; c< 4; c++)
{
for(r=0; r<4; r++)
{
t[r] = state[r][c];
}
for(r=0; r<4; r++)
{
state[r][c] = FFmul(0x02, t[r])
^ FFmul(0x03, t[(r+1)%4])
^ FFmul(0x01, t[(r+2)%4])
^ FFmul(0x01, t[(r+3)%4]);
}
}
}

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

void AES::AddRoundKey(unsigned char state[][4], unsigned char
k[][4])
{
int r,c;
for(c=0; c<4; c++)
{
for(r=0; r<4; r++)
{
state[r][c] ^= k[r][c];
}
}
}

  }  // InvCipher()

void AES::InvSubBytes(unsigned char state[][4])
{
int r,c;
for(r=0; r<4; r++)
{
for(c=0; c<4; c++)
{
state[r][c] = InvSbox[state[r][c]];
}
}
}

  private void SetNbNkNr(KeySize keySize)
  {
   this.Nb = 4;     // block size always = 4 words = 16 bytes = 128 bits
for AES

void AES::InvShiftRows(unsigned char state[][4])
{
unsigned char t[4];
int r,c;
for(r=1; r<4; r++)
{
for(c=0; c<4; c++)
{
t[c] = state[r][(c-r+4)%4];
}
for(c=0; c<4; c++)
{
state[r][c] = t[c];
}
}
}

   if (keySize == KeySize.Bits128)
   {
    this.Nk = 4;   // key size = 4 words = 16 bytes = 128 bits
    this.Nr = 10;  // rounds for algorithm = 10
   }
   else if (keySize == KeySize.Bits192)
   {
    this.Nk = 6;   // 6 words = 24 bytes = 192 bits
    this.Nr = 12;
   }
   else if (keySize == KeySize.Bits256)
   {
    this.Nk = 8;   // 8 words = 32 bytes = 256 bits
    this.Nr = 14;
   }
  }  // SetNbNkNr()

void AES::InvMixColumns(unsigned char state[][4])
{
unsigned char t[4];
int r,c;
for(c=0; c< 4; c++)
{
for(r=0; r<4; r++)
{
t[r] = state[r][c];
}
for(r=0; r<4; r++)
{
state[r][c] = FFmul(0x0e, t[r])
^ FFmul(0x0b, t[(r+1)%4])
^ FFmul(0x0d, t[(r+2)%4])
^ FFmul(0x09, t[(r+3)%4]);
}
}
}

  private void BuildSbox()
  {
   this.Sbox = new byte[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} };

 

  }  // BuildSbox()

#if
!defined(AFX_AES_H__6BDD3760_BDE8_4C42_85EE_6F7A434B81C4__INCLUDED_)
#define
AFX_AES_H__6BDD3760_BDE8_4C42_85EE_6F7A434B81C4__INCLUDED_

  private void BuildInvSbox()
  {
   this.iSbox = new byte[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} };

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

  }  // BuildInvSbox()

#include “stdafx.h”

  private void BuildRcon()
  {
   this.Rcon = new byte[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} };
  }  // BuildRcon()

class AES
{
public:
AES(unsigned char* key);
virtual ~AES();
unsigned char* Cipher(unsigned char* input);
unsigned char* InvCipher(unsigned char* input);
void* Cipher(void* input, int length=0);
void* InvCipher(void* input, int length);

  private void AddRoundKey(int round)
  {

private:
unsigned char Sbox[256];
unsigned char InvSbox[256];
unsigned char w[11][4][4];

   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,r] );
    }
   }
  }  // AddRoundKey()

void KeyExpansion(unsigned char* key, unsigned char w[][4][4]);
unsigned char FFmul(unsigned char a, unsigned char b);

  private void SubBytes()
  {
   for (int r = 0; r < 4; ++r)
   {
    for (int c = 0; c < 4; ++c)
    {
     this.State[r,c] = this.Sbox[ (this.State[r,c] >> 4),
(this.State[r,c] & 0x0f) ];
    }
   }
  }  // SubBytes

void SubBytes(unsigned char state[][4]);
void ShiftRows(unsigned char state[][4]);
void MixColumns(unsigned char state[][4]);
void AddRoundKey(unsigned char state[][4], unsigned char
k[][4]);

  private void InvSubBytes()
  {
   for (int r = 0; r < 4; ++r)
   {
    for (int c = 0; c < 4; ++c)
    {
     this.State[r,c] = this.iSbox[ (this.State[r,c] >> 4),
(this.State[r,c] & 0x0f) ];
    }
   }
  }  // InvSubBytes

void InvSubBytes(unsigned char state[][4]);
void InvShiftRows(unsigned char state[][4]);
void InvMixColumns(unsigned char state[][4]);
};

  private void ShiftRows()
  {
   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,c] = this.State[r,c];
    }
   }

#endif //
!defined(AFX_AES_H__6BDD3760_BDE8_4C42_85EE_6F7A434B81C4__INCLUDED_)

   for (int r = 1; r < 4; ++r)  // shift temp into State
   {
    for (int c = 0; c < 4; ++c)
    {
     this.State[r,c] = temp[ r, (c + r) % Nb ];
    }
   }
  }  // ShiftRows()

 

  private void InvShiftRows()
  {
   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,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,c];
    }
   }
  }  // InvShiftRows()

 

  private void MixColumns()
  {
   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,c] = this.State[r,c];
    }
   }
       
   for (int c = 0; c < 4; ++c)
   {
    this.State[0,c] = (byte) ( (int)gfmultby02(temp[0,c]) ^
(int)gfmultby03(temp[1,c]) ^
     (int)gfmultby01(temp[2,c]) ^ (int)gfmultby01(temp[3,c]) );
    this.State[1,c] = (byte) ( (int)gfmultby01(temp[0,c]) ^
(int)gfmultby02(temp[1,c]) ^
     (int)gfmultby03(temp[2,c]) ^ (int)gfmultby01(temp[3,c]) );
    this.State[2,c] = (byte) ( (int)gfmultby01(temp[0,c]) ^
(int)gfmultby01(temp[1,c]) ^
     (int)gfmultby02(temp[2,c]) ^ (int)gfmultby03(temp[3,c]) );
    this.State[3,c] = (byte) ( (int)gfmultby03(temp[0,c]) ^
(int)gfmultby01(temp[1,c]) ^
     (int)gfmultby01(temp[2,c]) ^ (int)gfmultby02(temp[3,c]) );
   }
  }  // MixColumns

 

  private void InvMixColumns()
  {
   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,c] = this.State[r,c];
    }
   }
       
   for (int c = 0; c < 4; ++c)
   {
    this.State[0,c] = (byte) ( (int)gfmultby0e(temp[0,c]) ^
(int)gfmultby0b(temp[1,c]) ^
     (int)gfmultby0d(temp[2,c]) ^ (int)gfmultby09(temp[3,c]) );
    this.State[1,c] = (byte) ( (int)gfmultby09(temp[0,c]) ^
(int)gfmultby0e(temp[1,c]) ^
     (int)gfmultby0b(temp[2,c]) ^ (int)gfmultby0d(temp[3,c]) );
    this.State[2,c] = (byte) ( (int)gfmultby0d(temp[0,c]) ^
(int)gfmultby09(temp[1,c]) ^
     (int)gfmultby0e(temp[2,c]) ^ (int)gfmultby0b(temp[3,c]) );
    this.State[3,c] = (byte) ( (int)gfmultby0b(temp[0,c]) ^
(int)gfmultby0d(temp[1,c]) ^
     (int)gfmultby09(temp[2,c]) ^ (int)gfmultby0e(temp[3,c]) );
   }
  }  // InvMixColumns

#include “stdafx.h”
#include “AES.h”

  private static byte gfmultby01(byte b)
  {
   return b;
  }

void print(unsigned char* state);

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

int main(int argc, char* argv[])
{
unsigned int a;
unsigned int b;
unsigned char input[16];
unsigned char key[16];
char name;
printf(“Cipher(c) or InvCipher(i)?\n”);
scanf(“%c”,&name);
if (name==’c’)
{
printf(“Please input M:\n”);
for (int i=0;i<16;i++)
{
scanf (“%x”,&a);
input[i]=a;
}
printf(“Please input K:\n”);
for (int ii=0;ii<16;ii++)
{
scanf(“%x”,&b);
key[ii]=b;
}
AES aes(key);
aes.Cipher(input);
printf(“After Cipher(C):\n”);
print(input);
}
if (name ==’i’)
{
printf(“Please input C:\n”);
for (int i=0;i<16;i++)
{
scanf (“%x”,&a);
input[i]=a;
}
printf(“Please input K:\n”);
for (int ii=0;ii<16;ii++)
{
scanf(“%x”,&b);
key[ii]=b;
}
AES aes(key);
aes.InvCipher(input);
printf(“After InvCipher(M):\n”);
print(input);
}
return 0;

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

}

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

void print(unsigned char* state)
{
int i;
for(i=0; i<16; i++)
{
printf(“%s%X “,state[i]>15 ? “” : “0”, state[i]);
}
printf(“\n”);
}

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

 

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

#if
!defined(AFX_AES_H__6BDD3760_BDE8_4C42_85EE_6F7A434B81C4__INCLUDED_)
#define
AFX_AES_H__6BDD3760_BDE8_4C42_85EE_6F7A434B81C4__INCLUDED_

  private static byte gfmultby0e(byte b)
  {
   return (byte)( (int)gfmultby02(gfmultby02(gfmultby02(b))) ^
    (int)gfmultby02(gfmultby02(b)) ^
    (int)gfmultby02(b) );
  }

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

  private void KeyExpansion()
  {
   this.w = new byte[Nb * (Nr+1), 4];  // 4 columns of bytes
corresponds to a word
   
   for (int row = 0; row < Nk; ++row)
   {
    this.w[row,0] = this.key[4*row];
    this.w[row,1] = this.key[4*row+1];
    this.w[row,2] = this.key[4*row+2];
    this.w[row,3] = this.key[4*row+3];
   }

#include “stdafx.h”

   byte[] temp = new byte[4];

class AES
{
public:
AES(unsigned char* key);
virtual ~AES();
unsigned char* Cipher(unsigned char* input);
unsigned char* InvCipher(unsigned char* input);
void* Cipher(void* input, int length=0);
void* InvCipher(void* input, int length);

   for (int row = Nk; row < Nb * (Nr+1); ++row)
   {
    temp[0] = this.w[row-1,0]; temp[1] = this.w[row-1,1];
    temp[2] = this.w[row-1,2]; temp[3] = this.w[row-1,3];

private:
unsigned char Sbox[256];
unsigned char InvSbox[256];
unsigned char w[11][4][4];

    if (row % Nk == 0) 
    {
     temp = SubWord(RotWord(temp));
         
     temp[0] = (byte)( (int)temp[0] ^ (int)this.Rcon[row/Nk,0]
);
     temp[1] = (byte)( (int)temp[1] ^ (int)this.Rcon[row/Nk,1]
);
     temp[2] = (byte)( (int)temp[2] ^ (int)this.Rcon[row/Nk,2]
);
     temp[3] = (byte)( (int)temp[3] ^ (int)this.Rcon[row/Nk,3]
);
    }
    else if ( Nk > 6 && (row % Nk == 4) ) 
    {
     temp = SubWord(temp);
    }
       
    // w[row] = w[row-Nk] xor temp
    this.w[row,0] = (byte) ( (int)this.w[row-Nk,0] ^ (int)temp[0]
);
    this.w[row,1] = (byte) ( (int)this.w[row-Nk,1] ^ (int)temp[1]
);
    this.w[row,2] = (byte) ( (int)this.w[row-Nk,2] ^ (int)temp[2]
);
    this.w[row,3] = (byte) ( (int)this.w[row-Nk,3] ^ (int)temp[3]
);
      
   }  // for loop
  }  // KeyExpansion()

void KeyExpansion(unsigned char* key, unsigned char w[][4][4]);
unsigned char FFmul(unsigned char a, unsigned char b);

  private byte[] SubWord(byte[] word)
  {
   byte[] result = new byte[4];
   result[0] = this.Sbox[ word[0] >> 4, word[0] & 0x0f
];
   result[1] = this.Sbox[ word[1] >> 4, word[1] & 0x0f
];
   result[2] = this.Sbox[ word[2] >> 4, word[2] & 0x0f
];
   result[3] = this.Sbox[ word[3] >> 4, word[3] & 0x0f
];
   return result;
  }

void SubBytes(unsigned char state[][4]);
void ShiftRows(unsigned char state[][4]);
void MixColumns(unsigned char state[][4]);
void AddRoundKey(unsigned char state[][4], unsigned char
k[][4]);

  private byte[] RotWord(byte[] word)
  {
   byte[] result = new byte[4];
   result[0] = word[1];
   result[1] = word[2];
   result[2] = word[3];
   result[3] = word[0];
   return result;
  }

void InvSubBytes(unsigned char state[][4]);
void InvShiftRows(unsigned char state[][4]);
void InvMixColumns(unsigned char state[][4]);
};

  public  void Dump()
  {
   Console.WriteLine(“Nb = ” + Nb + ” Nk = ” + Nk + ” Nr = ” + Nr);
   Console.WriteLine(“\nThe key is \n” + DumpKey() );
   Console.WriteLine(“\nThe Sbox is \n” + DumpTwoByTwo(Sbox));
   Console.WriteLine(“\nThe w array is \n” + DumpTwoByTwo(w));
   Console.WriteLine(“\nThe State array is \n” +
DumpTwoByTwo(State));
  }

#endif //
!defined(AFX_AES_H__6BDD3760_BDE8_4C42_85EE_6F7A434B81C4__INCLUDED_)

  public string DumpKey()
  {
   string s = “”;
   for (int i = 0; i < key.Length; ++i)
    s += key[i].ToString(“x2″) + ” “;
   return s;
  }

 

  public string DumpTwoByTwo(byte[,] a)
  {
   string s =””;
   for (int r = 0; r < a.GetLength(0); ++r)
   {
    s += “[“+r+”]” + ” “;
    for (int c = 0; c < a.GetLength(1); ++c)
    {
     s += a[r,c].ToString(“x2″) + ” ” ;
    }
    s += “\n”;
   }
   return s;
  }

 

 }  // class Aes

 

密学中的高级加密(Advanced Encryption
Standard,AES),又称Rijndael加密法,是United States际结盟邦政党行使的一种区块加密标准。这几个专业用来取代原先的DES,已经被多方分析且广为全球所使用。经过五年的精选流程,高级加密标准由United States国标与技术研商院
(NIST)于200一年3月2十1日颁发于FIPS PUB
1九7,并在二〇〇二年六月二二五日改成实用的正式。200陆年,高级加密标准已然成为对称密钥加密中最流行的算法之一。
因此四个礼拜的奋战,终于在前人能解密1陆字节字符串的功底上解密任意长度字符串,并将其封装为类,以往的调用直接引用该类即可,在卷入的进度中可正是冲击出现过多题材,不算大,但却实在不简单找到个中的消除的秘籍。
在卷入的经过中第二出现转手多少个难题:
一、内部存款和储蓄器溢出
2、解密到一定长度的字符串后,解密出现乱码
叁、 在用对话框程序开始展览测试时,明文也许密文展现不到对话框上
四、解密后,密文全体被译出,但后边跟着无端多出肯定长度的乱码
伍、对话框中无法开始展览换行
6、有个别长度的字符串解密出现被截断,截断点前边的密文被译为乱码
7、相同长度的字符串,有个别译出来正确,而一些译出来为乱码
八、无端提醒触发中断点
今日个别来论述以上难题应运而生的原由及消除方案:
问题1:
原因:new内部存款和储蓄器的大小不够,由于字符串结尾字符的熏陶导致边界溢出:如new:
char *inBuff = new char [nLen];而利用的时候却用了nLen+贰个字节。
缓解方案:分配内部存款和储蓄器是多分配叁个字节:char *inBuff = new char
[nLen+1];
问题2:
案由:在进行解密时,将前方加密的字符串copy到缓存,而缓存的尺寸分配不足,如本有1四千个字节的密文,但解密缓存只分红了513个字节来缓存密文。
缓解方案:任何应用程序只有实现效益了,才能谈其性质,以及内部存款和储蓄器占用,所以应尽量确定保障缓存的尺寸,char
inBuff[900000];
问题3:
原因:控件未有刷新。
缓解方案:在对话框程序中,假使想要直接通过edit控件的Value变量赋值给对话框,则必须刷新控件:程序后面加上UpDataData();语句。
问题4:
缘由:解密后的出口缓存分配过大。
缓解方案:char *outPut=new char [nlen];
aes.InvCipherByte(m_key, inBuff,nlen,outPut);假如分配时为char
*outPut=new char [nlen+1];则难点应运而生。
问题5:
缘由:对话框控件属性未有开始展览相应设置。
解决方案:return——》true,多媒体——》true,滚动条——》true。
问题6:
案由: 字符串长度处理有误。
杀鸡取蛋方案: nlen=strlen(inBuff);
char *outPut=new char [nlen];如果 char *outPut=new char
[nlen/3];字符串被截断。
问题7:
由来:如公开为123四五(六个字节)、hello(六个字节),数字解密没难点,但字母现身乱码,是因为内部存款和储蓄器分配不够。
缓解方案:分配内部存款和储蓄器时,多分配三个字节
问题8:
由来:copy字符串时,copy长度多了。
焚薮而田方案:fwrite(ouBuff,一,inBuffLen,foutput);,要是fwrite(ouBuff,一,(inBuffLen+一),foutput);,难题出现。
实则确实在卷入时,出现的标题远远不止于上述多少个。
未来证实下该类的主导封装思想:
该类算法都以有法师们已经设计好,我们只供给按我们和好的急需多少组织下逻辑,前边早已有人解密1陆字节的字符串,并且种种算法还算不错了,那大家就只要求在1六字节的底子上持续大家的4意长度。
于是出现了3个字符分割函数:void Split(CString source, CStringArray&
dest, CString division);//字符串分割函数
起成效是将大家的字符串分割为17个字节后,调用后面已部分算法,当前在本文中该函数首若是用在解密中,而加密函数是平昔将划分算法写进加密函数。
转瞬之间是已打包好的类:
头文件:
/****************************************************************
**意义:AES加密及解密——字符串(任意长度)、文件(任意大小)
**作者:
**公司:
**始建日期:20一三.1一.陆
*****************************************************************/

#include <windows.h>
#define Bits128 16
#define Bits192 24
#define Bits256 32

static unsigned char AesSbox[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
};

static unsigned char AesiSbox[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
};
static unsigned char AesRcon[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
};

class Aes // Advanced Encryption Standard
{
public:
~Aes();
Aes();
Aes(int keySize, unsigned char* keyBytes);
unsigned char State[4][4];
void Cipher(unsigned char* input, unsigned char* output); // encipher
16-bit input
void InvCipher(unsigned char* input, unsigned char* output); //
decipher 16-bit input
private:
int Nb; // block size in 32-bit words. Always 4 for AES. (128 bits).
int Nk; // key size in 32-bit words. 4, 6, 8. (128, 192, 256 bits).
int Nr; // number of rounds. 10, 12, 14.

unsigned char key[32];
unsigned char w[16*15];

void SetNbNkNr(int keySize);
void AddRoundKey(int round); //轮密钥加
void SubBytes(); //S盒字节代换
void InvSubBytes(); //逆S盒字节代换
void ShiftRows(); //行移位
void InvShiftRows();
void MixColumns(); //列混淆
void InvMixColumns();
unsigned char gfmultby01(unsigned char b);
unsigned char gfmultby02(unsigned char b);
unsigned char gfmultby03(unsigned char b);
unsigned char gfmultby09(unsigned char b);
unsigned char gfmultby0b(unsigned char b);
unsigned char gfmultby0d(unsigned char b);
unsigned char gfmultby0e(unsigned char b);
void KeyExpansion(); //密钥扩张
unsigned char* SubWord(unsigned char* word); //密钥S盒字代换
unsigned char* RotWord(unsigned char* word); //密钥移位
//Dump();
//DumpKey();
// DumpTwoByTwo(char* a);
public:
void CipherAny(unsigned char* input,unsigned char* output);
void InvCipherAny(unsigned char* input,unsigned char*
output);//unsigned char* output

void Split(CString source, CStringArray& dest, CString
division);//字符串分割函数

void CipherByte(CString KeyValue, char *input,UINT nSend,char *
outPut);//加密字符串
void InvCipherByte(CString KeyValue, char *input,UINT nSend,char *
outPut);//解密字符串

int char2num(char ch);
void set_key(int KeySize,UCHAR *KeyBytes);

void CipherFile(CString KeyValue, char* inBuff, char*
outBuff);//加密文件
void InvCipherFile(CString KeyValue, char* inBuff, char*
outBuff);//解密文件
public:
int keysize;
};

cpp文件:
#include “StdAfx.h” //注意在此 #include
“Aes.h”不可能置身眼下,不然出错,
#include “Aes.h”
Aes::~Aes()
{

}
Aes::Aes()
{

}
////////////////////////////////////////////////////////////////////////////////////////////////
//构造函数
Aes::Aes(int keysize,unsigned char* keyBytes)
{
SetNbNkNr(keysize); //设置密钥块数,轮数
memcpy(key,keyBytes,keysize);
//字符串拷贝函数,把keyBytes的keysize个字符复制到key中
KeyExpansion(); //密钥扩大,必须提前做的开始化
}
//字符ASCII码值到字符字面值的转移 如 ‘0’转换到0, ‘a’转换来拾
int Aes::char2num(char ch)
{
if(ch>=’0’&&ch<=’9′)return ch-‘0’;
else if(ch>=’a’&&ch<=’f’)return ch-‘a’+10;
return 0;
}
////////////////////////////////////////////////////////////////////////////////////////////////
void Aes::SetNbNkNr(int keySize)
{
Nb=4;
if(keySize==Bits128)
{
Nk=4; //4*4字节,128位密钥,10轮加密
Nr=10;
}
else if(keySize==Bits192)
{
Nk=6; //6*4字节,192位密钥,12轮加密
Nr=12;
}
else if(keySize== Bits256)
{
Nk=8; //8*4字节,256位密钥,14轮加密
Nr=14;
}
}
////////////////////////////////////////////////////////////////////////////////////////////////
void Aes::KeyExpansion()
{

memset(w,0,16*15);
for(int row=0;row<Nk;row++) //拷贝seed 密钥
{
w[4*row+0] = key[4*row];
w[4*row+1] = key[4*row+1];
w[4*row+2] = key[4*row+2];
w[4*row+3] = key[4*row+3];
}
byte* temp = new byte[4];
for(int row=Nk;row<4*(Nr+1);row++)
{
temp[0]=w[4*row-4]; //当前列的前一列
temp[1]=w[4*row-3];
temp[2]=w[4*row-2];
temp[3]=w[4*row-1];
if(row%Nk==0) //逢nk时,对脚下列的前壹列作特殊处理
{
temp=SubWord(RotWord(temp)); //先移位,再代换,最后和轮常量异或
temp[0] = (byte)( (int)temp[0] ^ (int) AesRcon[4*(row/Nk)+0] );
temp[1] = (byte)( (int)temp[1] ^ (int) AesRcon[4*(row/Nk)+1] );
temp[2] = (byte)( (int)temp[2] ^ (int) AesRcon[4*(row/Nk)+2] );
temp[3] = (byte)( (int)temp[3] ^ (int) AesRcon[4*(row/Nk)+3] );
}
else if ( Nk > 6 && (row % Nk == 肆) ) //那些还未有搞明白
{
temp = SubWord(temp);
}

// w[row] = w[row-Nk] xor temp
w[4*row+0] = (byte) ( (int) w[4*(row-Nk)+0] ^ (int)temp[0] );
w[4*row+1] = (byte) ( (int) w[4*(row-Nk)+1] ^ (int)temp[1] );
w[4*row+2] = (byte) ( (int) w[4*(row-Nk)+2] ^ (int)temp[2] );
w[4*row+3] = (byte) ( (int) w[4*(row-Nk)+3] ^ (int)temp[3] );
} // for loop

}
////////////////////////////////////////////////////////////////////////////////////////////////
//密钥移位函数
unsigned char* Aes::RotWord(unsigned char* word)
{
byte* temp = new byte[4];
temp[0] = word[1];
temp[1] = word[2];
temp[2] = word[3];
temp[3] = word[0];
return temp;
}
////////////////////////////////////////////////////////////////////////////////////////////////
//密钥字代换函数
unsigned char* Aes::SubWord(unsigned char* word)
{
byte* temp = new byte[4];
for(int j=0;j<4;j++)
{
temp[j] = AesSbox[16*(word[j] >> 4)+(word[j] & 0x0f)];
//实际上也足以写成AesSbox[[j]];因为两岸对等
}
return temp;

}
////////////////////////////////////////////////////////////////////////////////////////////////
//Aes加密函数(对文件加密能够调用该函数)
void Aes::Cipher(unsigned char* input, unsigned char* output)
{
memset(&State[0][0],0,16);
for(int i=0;i<4*Nb;i++)
//那里是先写列后写行的,即输入是1列1列的进入的
{
State[i%4][i/4]=input[i];
//换到先写行后写列也是足以的,只要在出口时也是如此就能够了
}
AddRoundKey(0); //轮密钥加

for (int round = 1; round <= (Nr – 1); round++) // main round loop
{
SubBytes(); //字节代换
ShiftRows(); //行移位
MixColumns(); //列混淆
AddRoundKey(round); //轮密钥加
} // main round loop

SubBytes(); //字节代换
ShiftRows(); //行移位
AddRoundKey(Nr); //轮密钥加

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

}

////////////////////////////////////////////////////////////////////////////////////////////////
//Aes解密函数(对文本解密能够调用该函数)
void Aes::InvCipher(unsigned char* input,unsigned char* output)
{
memset(&State[0][0],0,16);
for (int i = 0; i < (4 * Nb); i++)
{
State[i % 4][ i / 4] = input[i];
}

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[i] = State[i % 4][ i / 4];
}
}
////////////////////////////////////////////////////////////////////////////////////////////////
//轮密钥加
void Aes::AddRoundKey(int round)
{
int i,j; //i行 j列 //因为密钥w是一列1列排列的,即 k0 k4 k八 k12
for(j=0;j<4;j++) // k1 k5 k9 k13
{ // k2 k6 k10k14
for(i=0;i<4;i++) // k3 k7 k11k15
{ // 所以i行j列的下标是四*((round*4)+j)+i即16*round+4*j+i
State[i][j]=(unsigned
char)((int)State[i][j]^(int)w[4*((round*4)+j)+i]);
}
}
}
////////////////////////////////////////////////////////////////////////////////////////////////
//字节代换函数
void Aes::SubBytes() //Page 103
{
int i,j;
for(j=0;j<4;j++)
{
for(i=0;i<4;i++)
{
State[i][j]=AesSbox[State[i][j]];
//因为
16*(State[i][j]>>4)+State[i][j]&0x0f=State[i][j]

}
}
}
void Aes::InvSubBytes()
{
int i,j;
for(j=0;j<4;j++)
{
for(i=0;i<4;i++)
{
State[i][j]=AesiSbox[State[i][j]]; //因为
16*(State[i][j]>>4)+State[i][j]&0x0f=State[i][j]
}
}

}
////////////////////////////////////////////////////////////////////////////////////////////////
void Aes::ShiftRows()
{
unsigned char temp[4*4]; //Page105
int i,j;
for(j=0;j<4;j++)
{
for(i=0;i<4;i++)
{
temp[4*i+j]=State[i][j];
}
}
for(i=1;i<4;i++)
{
for(j=0;j<4;j++)
{
if(i==1)State[i][j]=temp[4*i+(j+1)%4]; //第二行左移一个人
else if(i==2)State[i][j]=temp[4*i+(j+2)%4]; //第二行左移3人
else if(i==3)State[i][j]=temp[4*i+(j+3)%4]; //第2行左移2人
}
}

}
void Aes::InvShiftRows()
{
unsigned char temp[4*4];
int i,j;
for(j=0;j<4;j++)
{
for(i=0;i<4;i++)
{
temp[4*i+j]=State[i][j];
}
}
for(i=1;i<4;i++)
{
for(j=0;j<4;j++)
{
//if(i==1)State[i][j]=temp[4*i+(j-1)%4]; 在此犯了3个张冠李戴 -壹%四=-壹而不是三,所以使用了下边再加二个4的做法
if(i==1)State[i][j]=temp[4*i+(j+3)%4]; //第一行右移1人j-壹+4=j+三
else if(i==2)State[i][j]=temp[4*i+(j+2)%4]; //第壹行右移四位j-二+4=j+二
else if(i==3)State[i][j]=temp[4*i+(j+1)%4]; //第1行右移四人j-三+四=j+二
}
}

}
////////////////////////////////////////////////////////////////////////////////////////////////
void Aes::MixColumns()
{
unsigned char temp[4*4];
int i,j;
for(j=0;j<四;j++) //二 三 1 1 列混淆矩阵 Page十7
{ //1 2 3 1
for(i=0;i<4;i++) //1 1 2 3
{ //3 1 1 2
temp[4*i+j]=State[i][j];
}
}
for(j=0;j<4;j++)
{
State[0][j] = (unsigned char) ( (int)gfmultby02(temp[0+j]) ^
(int)gfmultby03(temp[4*1+j]) ^
(int)gfmultby01(temp[4*2+j]) ^ (int)gfmultby01(temp[4*3+j]) );
State[1][j] = (unsigned char) ( (int)gfmultby01(temp[0+j]) ^
(int)gfmultby02(temp[4*1+j]) ^
(int)gfmultby03(temp[4*2+j]) ^ (int)gfmultby01(temp[4*3+j]) );
State[2][j] = (unsigned char) ( (int)gfmultby01(temp[0+j]) ^
(int)gfmultby01(temp[4*1+j]) ^
(int)gfmultby02(temp[4*2+j]) ^ (int)gfmultby03(temp[4*3+j]) );
State[3][j] = (unsigned char) ( (int)gfmultby03(temp[0+j]) ^
(int)gfmultby01(temp[4*1+j]) ^
(int)gfmultby01(temp[4*2+j]) ^ (int)gfmultby02(temp[4*3+j]) );
}

}
void Aes::InvMixColumns()
{
unsigned char temp[4*4];
int i,j;
for (i = 0; i < 4; i++) // copy State into temp[]
{
for (j = 0; j < 4; j++) //0e 0b 0d 0玖 逆变换矩阵 Page拾8
{ //09 0e 0b 0d
temp[4*i+j] = State[i][j]; //0d 09 0e 0b
} //0b 0d 09 0e
}

for (j = 0; j < 4; j++)
{
State[0][j] = (unsigned char) ( (int)gfmultby0e(temp[j]) ^
(int)gfmultby0b(temp[4+j]) ^
(int)gfmultby0d(temp[4*2+j]) ^ (int)gfmultby09(temp[4*3+j]) );
State[1][j] = (unsigned char) ( (int)gfmultby09(temp[j]) ^
(int)gfmultby0e(temp[4+j]) ^
(int)gfmultby0b(temp[4*2+j]) ^ (int)gfmultby0d(temp[4*3+j]) );
State[2][j] = (unsigned char) ( (int)gfmultby0d(temp[j]) ^
(int)gfmultby09(temp[4+j]) ^
(int)gfmultby0e(temp[4*2+j]) ^ (int)gfmultby0b(temp[4*3+j]) );
State[3][j] = (unsigned char) ( (int)gfmultby0b(temp[j]) ^
(int)gfmultby0d(temp[4+j]) ^
(int)gfmultby09(temp[4*2+j]) ^ (int)gfmultby0e(temp[4*3+j]) );
}
}
////////////////////////////////////////////////////////////////////////////////////////////////
unsigned char Aes::gfmultby01(unsigned char b)
{
return b;
}
unsigned char Aes::gfmultby02(unsigned char b)
{
if (b < 0x80)
return (unsigned char)(int)(b <<1);
else
return (unsigned char)( (int)(b << 1) ^ (int)(0x1b) );
}

unsigned char Aes::gfmultby03(unsigned char b)
{
return (unsigned char) ( (int)gfmultby02(b) ^ (int)b );
}

unsigned char Aes::gfmultby09(unsigned char b)
{
return (unsigned char)( (int)gfmultby02(gfmultby02(gfmultby02(b))) ^
(int)b );
}

unsigned char Aes::gfmultby0b(unsigned char b)
{
return (unsigned char)( (int)gfmultby02(gfmultby02(gfmultby02(b))) ^
(int)gfmultby02(b) ^ (int)b );
}

unsigned char Aes::gfmultby0d(unsigned char b)
{
return (unsigned char)( (int)gfmultby02(gfmultby02(gfmultby02(b))) ^
(int)gfmultby02(gfmultby02(b)) ^ (int)(b) );
}

unsigned char Aes::gfmultby0e(unsigned char b)
{
return (unsigned char)( (int)gfmultby02(gfmultby02(gfmultby02(b))) ^
(int)gfmultby02(gfmultby02(b)) ^(int)gfmultby02(b) );
}
////////////////////////////////////////////////////////////////////////////////////////////////
//多字符串加密函数最大25陆字节
void Aes::CipherAny(unsigned char* input,unsigned char*
output)//unsigned char* output
{
int blocknum=0,ByteLen,blockend=0;
ByteLen = strlen((char *)input);

if(ByteLen>16)
{
blocknum = ByteLen/1陆;//取得商作为i的巡回
blockend = ByteLen%1陆;//取得余数作为最后加密位数
for (int i=0;i<blocknum;i++)
{
Cipher(input,output);
input=input+16;
output=output+16;
}
if (blockend)
{
Cipher(input,output);
}
}
else
{
Cipher(input,output);
}
}

//解密25陆字节的函数
void Aes::InvCipherAny(unsigned char* input,unsigned char*
output)//unsigned char* output
{
int blocknum=0,ByteLen,blockend=0;
ByteLen = strlen((char *)input);

if(ByteLen>16)
{
blocknum = ByteLen/1陆;//取得商作为i的大循环
blockend = ByteLen%16;//取得余数作为最终加密位数
for (int i=0;i<blocknum;i++)
{
InvCipher(input,output);
input=input+16;
output=output+16;
}
if (blockend)
{
InvCipher(input,output);
}
}
else
{
InvCipher(input,output);
}
}

//////////////////////////////////////////////////////////////////////////////////////
//字符串加密函数(可加密任意长度字符串)
//KeyValue:加密KEY值
//input:待加密的字符串
//outPut:加密后的字符串
void Aes::CipherByte(CString KeyValue, char *input,UINT nSend,char *
outPut)
{
int length=strlen(KeyValue);
unsigned char str1[33];
strcpy((char *)str1,(LPSTR)(LPCTSTR)KeyValue);
if (length<=16&&length>0)keysize=16;
else if(length<=24&&length>16)keysize=24;
else if(length>24&&length<=32)keysize=32;
Aes aes(keysize,str1);

// BYTE
key[16]={0x12,0x44,0x56,0x38,0x55,0x82,0x56,0x85,0x23,0x25,0x56,0x45,0x52,0x47,0x45,0x86};
// Aes aes(24,key);

BYTE input1[16];
BYTE output1[16];

CString strSend,str;
strSend.Format(“%s”,input);
BYTE *pByte=new BYTE[nSend] ;

memcpy(pByte,strSend.GetBuffer(0),nSend);
strSend=””;

UINT iMeg=nSend/16,i,j=0;
while(iMeg)
{
i=0;
for(j=16*(nSend/16-iMeg);j<16*(nSend/16-iMeg+1);j++)
{
input1[i]=pByte[j];
i++;
}
aes.Cipher(input1,output1);
for(i=0;i<16;i++)
{
str.Format(“x%x”,output1[i]);
strSend+=str;
}
iMeg–;
}
if(nSend%16!=0)
{
for(i=0;i<16;i++)
{
if(i<nSend%16)
{
input1[i]=pByte[j];
j++;
}
else
input1[i]=0x0;
}
aes.Cipher(input1,output1);
for(i=0;i<16;i++)
{
str.Format(“x%x”,output1[i]);
strSend+=str;//最后密文
}
}
int preLen = strSend.GetLength()+1;
memcpy(outPut, (LPCTSTR)strSend, preLen);
}

///////////////////////////////////////////////////
//分割函数
//source:待分割的字符串
//dest:分割字符串后缓存到dest数组
//division:分割关键字
void Aes::Split(CString source, CStringArray& dest, CString division)
{
int len=source.GetLength();
dest.RemoveAll();
int pos = 0;
int pre_pos = 0;
while( -1 != pos )
{
pre_pos = pos+1;
pos = source.Find(division,(pos+1));
if(-1==pos)
dest.Add(source.Mid(pre_pos,(len-pre_pos)));
dest.Add(source.Mid(pre_pos,(pos-pre_pos)));
}

}

//////////////////////////////////////////////////////////////////////////////////////
//字符串解密函数(可解密任意长度字符串)
//KeyValue:解密KEY值
//input:待解密的字符串
//outPut:解密后的字符串
void Aes::InvCipherByte(CString KeyValue, char *input,UINT nSend,char
* outPut)
{
int length=strlen(KeyValue);
unsigned char str2[33];
strcpy((char *)str2,(LPSTR)(LPCTSTR)KeyValue);
if (length<=16&&length>0)keysize=16;
else if(length<=24&&length>16)keysize=24;
else if(length>24&&length<=32)keysize=32;
Aes aes(keysize,str2);

// BYTE
key[16]={0x12,0x44,0x56,0x38,0x55,0x82,0x56,0x85,0x23,0x25,0x56,0x45,0x52,0x47,0x45,0x86};
// Aes aes(24,key);

BYTE input1[16];
BYTE output1[16];

CString strSend;
strSend.Format(“%s”,input);

CStringArray dest;
Split(strSend, dest,”x”);

int lenx=dest.GetSize();

int iMeg=(lenx-1)/16,i,j=0,k=0;
while(iMeg)
{
i=0;
for(j=16*((lenx-1)/16-iMeg);j<16*((lenx-1)/16-iMeg+1);j++)
{

input1[i]=(unsigned char)strtol(dest[j],NULL,16);
i++;
}
aes.InvCipher(input1,output1);
for(i=0;i<16;i++)
{
outPut[k]=(char)output1[i];
k++;
}
iMeg–;
}
}
//////////////////////////////////////////////////////////////////////////////////////
//KEY值设置
VOID Aes::set_key(int KeySize,UCHAR *KeyBytes)
{
SetNbNkNr(keysize); //设置密钥块数,轮数
memcpy(key, KeyBytes, keysize);
//字符串拷贝函数,把keyBytes的keysize个字符复制到key中
KeyExpansion(); //密钥扩张,必须超前做的开始化

}

//////////////////////////////////////////////
//加密文件
//KeyValue:加密KEY值
//inBuffFile:待加密的文书名(含文件路径)
//outBuffFile:加密后文件的保存名称(含文件路径)
void Aes::CipherFile(CString KeyValue, char* inBuffFile, char*
outBuffFile)
{
Aes aes;
CString EnDe_filename;
EnDe_filename = inBuffFile;
if(EnDe_filename==””)return;
FILE* finput;
FILE* foutput;
finput=fopen((LPCTSTR)EnDe_filename,”rb”);
if(!finput)
{
return;
}
fseek(finput,0,SEEK_END);
long lFileLen=ftell(finput);
//ftell()函数重回文件地点提示符的当下值,即只要明日是在文书结尾,则那几个值正是文件长度
fseek(finput,0,SEEK_SET);
long blocknum=lFileLen/16;
long leftnum=lFileLen%16;
EnDe_filename = outBuffFile;
foutput=fopen((LPCTSTR)EnDe_filename,”wb”);
if(!foutput)
{
fclose(finput);
return;
}
char *inBuff = new char [lFileLen+1];
char *ouBuff = new char[(lFileLen/16+1)*48+1];

fread(inBuff,1,lFileLen,finput);
inBuff[lFileLen] = ‘\0’;

aes.CipherByte(KeyValue, inBuff, (lFileLen+1), ouBuff);
CString strSend;//发送数据
strSend.Format(“%s”,ouBuff);
int ouBuffLen = strlen(strSend);
fwrite(ouBuff,1,ouBuffLen,foutput);

delete inBuff;
delete ouBuff;
fclose(finput);
fclose(foutput);
}
/////////////////////////////////////////////////////
//解密文件
//KeyValue:解密KEY值
//inBuffFile:待解密的文件名(含文件路径)
//outBuffFile:解密后文件的保留名称(含文件路径)
void Aes::InvCipherFile(CString KeyValue, char* inBuffFile, char*
outBuffFile)
{
Aes aes;
CString EnDe_filename;
EnDe_filename = inBuffFile;
if(EnDe_filename==””)return;
FILE* finput;
FILE* foutput;
finput=fopen((LPCTSTR)EnDe_filename,”rb”);
if(!finput)
{
return;
}
fseek(finput,0,SEEK_END);
long lFileLen=ftell(finput);
//ftell()函数重回文件地点提示符的近年来值,即借使今后是在文件结尾,则那几个值便是文本长度
fseek(finput,0,SEEK_SET);
long blocknum=lFileLen/16;
long leftnum=lFileLen%16;
EnDe_filename = outBuffFile;
foutput=fopen((LPCTSTR)EnDe_filename,”wb”);
if(!foutput)
{
fclose(finput);
return;
}

char *inBuff = new char [lFileLen + 1];
char *ouBuff = new char[(lFileLen/16+1)*48+1];
fread(inBuff,1,lFileLen,finput);
inBuff[lFileLen] = ‘\0’;

aes.InvCipherByte(KeyValue, inBuff, (lFileLen+1), ouBuff);
CString strSend;//发送数据
strSend.Format(“%s”,ouBuff);
int inBuffLen = strlen(ouBuff);
fwrite(ouBuff,1,inBuffLen,foutput);

delete inBuff;
delete ouBuff;
fclose(finput);
fclose(foutput);
}

 

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