aes.txt

aes的一份转载代码

#include 
using namespace std;

#ifndef uint8
#define uint8 unsigned char
#endif

uint8 sbox[256]={
    0x63, 0x7C, 0x77, 0x7B, 0xF2, 0x6B, 0x6F, 0xC5,
    0x30, 0x01, 0x67, 0x2B, 0xFE, 0xD7, 0xAB, 0x76,
    0xCA, 0x82, 0xC9, 0x7D, 0xFA, 0x59, 0x47, 0xF0,
    0xAD, 0xD4, 0xA2, 0xAF, 0x9C, 0xA4, 0x72, 0xC0,
    0xB7, 0xFD, 0x93, 0x26, 0x36, 0x3F, 0xF7, 0xCC,
    0x34, 0xA5, 0xE5, 0xF1, 0x71, 0xD8, 0x31, 0x15,
    0x04, 0xC7, 0x23, 0xC3, 0x18, 0x96, 0x05, 0x9A,
    0x07, 0x12, 0x80, 0xE2, 0xEB, 0x27, 0xB2, 0x75,
    0x09, 0x83, 0x2C, 0x1A, 0x1B, 0x6E, 0x5A, 0xA0,
    0x52, 0x3B, 0xD6, 0xB3, 0x29, 0xE3, 0x2F, 0x84,
    0x53, 0xD1, 0x00, 0xED, 0x20, 0xFC, 0xB1, 0x5B,
    0x6A, 0xCB, 0xBE, 0x39, 0x4A, 0x4C, 0x58, 0xCF,
    0xD0, 0xEF, 0xAA, 0xFB, 0x43, 0x4D, 0x33, 0x85,
    0x45, 0xF9, 0x02, 0x7F, 0x50, 0x3C, 0x9F, 0xA8,
    0x51, 0xA3, 0x40, 0x8F, 0x92, 0x9D, 0x38, 0xF5,
    0xBC, 0xB6, 0xDA, 0x21, 0x10, 0xFF, 0xF3, 0xD2,
    0xCD, 0x0C, 0x13, 0xEC, 0x5F, 0x97, 0x44, 0x17,
    0xC4, 0xA7, 0x7E, 0x3D, 0x64, 0x5D, 0x19, 0x73,
    0x60, 0x81, 0x4F, 0xDC, 0x22, 0x2A, 0x90, 0x88,
    0x46, 0xEE, 0xB8, 0x14, 0xDE, 0x5E, 0x0B, 0xDB,
    0xE0, 0x32, 0x3A, 0x0A, 0x49, 0x06, 0x24, 0x5C,
    0xC2, 0xD3, 0xAC, 0x62, 0x91, 0x95, 0xE4, 0x79,
    0xE7, 0xC8, 0x37, 0x6D, 0x8D, 0xD5, 0x4E, 0xA9,
    0x6C, 0x56, 0xF4, 0xEA, 0x65, 0x7A, 0xAE, 0x08,
    0xBA, 0x78, 0x25, 0x2E, 0x1C, 0xA6, 0xB4, 0xC6,
    0xE8, 0xDD, 0x74, 0x1F, 0x4B, 0xBD, 0x8B, 0x8A,
    0x70, 0x3E, 0xB5, 0x66, 0x48, 0x03, 0xF6, 0x0E,
    0x61, 0x35, 0x57, 0xB9, 0x86, 0xC1, 0x1D, 0x9E,
    0xE1, 0xF8, 0x98, 0x11, 0x69, 0xD9, 0x8E, 0x94,
    0x9B, 0x1E, 0x87, 0xE9, 0xCE, 0x55, 0x28, 0xDF,
    0x8C, 0xA1, 0x89, 0x0D, 0xBF, 0xE6, 0x42, 0x68,
    0x41, 0x99, 0x2D, 0x0F, 0xB0, 0x54, 0xBB, 0x16
};

uint8 invsbox[256] =
{
    0x52, 0x09, 0x6A, 0xD5, 0x30, 0x36, 0xA5, 0x38,
    0xBF, 0x40, 0xA3, 0x9E, 0x81, 0xF3, 0xD7, 0xFB,
    0x7C, 0xE3, 0x39, 0x82, 0x9B, 0x2F, 0xFF, 0x87,
    0x34, 0x8E, 0x43, 0x44, 0xC4, 0xDE, 0xE9, 0xCB,
    0x54, 0x7B, 0x94, 0x32, 0xA6, 0xC2, 0x23, 0x3D,
    0xEE, 0x4C, 0x95, 0x0B, 0x42, 0xFA, 0xC3, 0x4E,
    0x08, 0x2E, 0xA1, 0x66, 0x28, 0xD9, 0x24, 0xB2,
    0x76, 0x5B, 0xA2, 0x49, 0x6D, 0x8B, 0xD1, 0x25,
    0x72, 0xF8, 0xF6, 0x64, 0x86, 0x68, 0x98, 0x16,
    0xD4, 0xA4, 0x5C, 0xCC, 0x5D, 0x65, 0xB6, 0x92,
    0x6C, 0x70, 0x48, 0x50, 0xFD, 0xED, 0xB9, 0xDA,
    0x5E, 0x15, 0x46, 0x57, 0xA7, 0x8D, 0x9D, 0x84,
    0x90, 0xD8, 0xAB, 0x00, 0x8C, 0xBC, 0xD3, 0x0A,
    0xF7, 0xE4, 0x58, 0x05, 0xB8, 0xB3, 0x45, 0x06,
    0xD0, 0x2C, 0x1E, 0x8F, 0xCA, 0x3F, 0x0F, 0x02,
    0xC1, 0xAF, 0xBD, 0x03, 0x01, 0x13, 0x8A, 0x6B,
    0x3A, 0x91, 0x11, 0x41, 0x4F, 0x67, 0xDC, 0xEA,
    0x97, 0xF2, 0xCF, 0xCE, 0xF0, 0xB4, 0xE6, 0x73,
    0x96, 0xAC, 0x74, 0x22, 0xE7, 0xAD, 0x35, 0x85,
    0xE2, 0xF9, 0x37, 0xE8, 0x1C, 0x75, 0xDF, 0x6E,
    0x47, 0xF1, 0x1A, 0x71, 0x1D, 0x29, 0xC5, 0x89,
    0x6F, 0xB7, 0x62, 0x0E, 0xAA, 0x18, 0xBE, 0x1B,
    0xFC, 0x56, 0x3E, 0x4B, 0xC6, 0xD2, 0x79, 0x20,
    0x9A, 0xDB, 0xC0, 0xFE, 0x78, 0xCD, 0x5A, 0xF4,
    0x1F, 0xDD, 0xA8, 0x33, 0x88, 0x07, 0xC7, 0x31,
    0xB1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xEC, 0x5F,
    0x60, 0x51, 0x7F, 0xA9, 0x19, 0xB5, 0x4A, 0x0D,
    0x2D, 0xE5, 0x7A, 0x9F, 0x93, 0xC9, 0x9C, 0xEF,
    0xA0, 0xE0, 0x3B, 0x4D, 0xAE, 0x2A, 0xF5, 0xB0,
    0xC8, 0xEB, 0xBB, 0x3C, 0x83, 0x53, 0x99, 0x61,
    0x17, 0x2B, 0x04, 0x7E, 0xBA, 0x77, 0xD6, 0x26,
    0xE1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0C, 0x7D
};


class Rijndeal
{
public: 
 char text[1000],text1[1000];
    uint8 state[16];
    uint8 key[16];
    uint8 roundkey[11][16];

 void add(uint8 s[16],uint8 k[16]);
 void subbyte(uint8 s[16]);
 void shiftrows(uint8 s[16]);
 void mixcolumns(uint8 s[16]);
 void keysehedule();
 void rijndeal();//加密
 void jiami();
 void invsubbyte(uint8 s[16]);
 void invshiftrows(uint8 s[16]);
 void invmixcolumns(uint8 s[16]);
 void invrijndeal();
 void jiemi();
};

void Rijndeal::add(uint8 s[16],uint8 k[16])
{
 for(uint8 i=0;i<16;i++)
  s[i]^=k[i];
}

void Rijndeal::subbyte(uint8 s[16])
{
 for(int i=0;i<16;i++)
  s[i]=sbox[s[i]];
}

void Rijndeal::shiftrows(uint8 s[16])
{
 int i,t=s[4];
 for(i=4;i<7;i++)s[i]=s[i+1];  
 s[i++]=t;
 t=s[i];s[i]=s[i+2];s[(i++)+2]=t;
 t=s[i];s[i]=s[i+2];s[i+2]=t;
 t=s[15];
 for(i=15;i>12;i--)s[i]=s[i-1];  
 s[i]=t;
}

void Rijndeal::mixcolumns(uint8 s[16])
{
 int i;
 uint8 mix[4][4]={2,3,1,1,1,2,3,1,1,1,2,3,3,1,1,2};
 uint8 ss[16];
 for(i=0;i<16;i++)ss[i]=s[i];
 for(i=0;i<4;i++)
  for(int j=0;j<4;j++)
  {
   int f[4];
   for(int l=0;l<4;l++)
   {
    f[l]=ss[i+4*l];
    if(mix[j][l]==2)f[l]<<=1;
    if(mix[j][l]==3)f[l]^=f[l]<<1;
    if(f[l]&0x100)f[l]^=0x11b;//溢出时要异或0x11b
   }
   s[4*j+i]=((uint8)f[0])^((uint8)f[1])^((uint8)f[2])^((uint8)f[3]);
  }
}

void Rijndeal::keysehedule()
{
 uint8 bit[10]={0x1,0x2,0x4,0x8,0x10,0x20,0x40,0x80,0x1b,0x36};
 int i;
 for(i=0;i<16;i++)roundkey[0][i]=key[i];
 for(i=1;i<=10;i++)
 {
  for(int j=0;j<4;j++)
  {
   uint8 f[4];
   if(j==0)
   {
    for(int l=0;l<4;l++)
        f[l]=roundkey[i-1][3+l*4];
    uint8 t=f[0];
    for(l=0;l<3;l++)f[l]=f[l+1];
    f[l]=t;
    for(l=0;l<4;l++)f[l]=sbox[f[l]];
    roundkey[i][0]=roundkey[i-1][0]^f[0]^bit[i-1];
    for(l=1;l<4;l++)roundkey[i][l*4]=roundkey[i-1][l*4]^f[l];
   }
   else for(int l=0;l<4;l++)
    roundkey[i][j+l*4]=roundkey[i][j+l*4-1]^roundkey[i-1][j+l*4];
  }
 }
}

void Rijndeal::rijndeal()//组加密
{
 keysehedule();
 add(state,roundkey[0]);
 for(int i=1;i<10;i++)
 {
     subbyte(state);
     shiftrows(state);
     mixcolumns(state);
     add(state,roundkey[i]);
 }
    subbyte(state);
 shiftrows(state);
    add(state,roundkey[i]);
}

void Rijndeal::jiami()
{
 int l=0,k=0,i;
 for(i=0;i<16&&text[i]!='\0';i++)key[i]=text[i];//把明文的前16个当做初始密钥
 if(i<16)for(;i<16;i++)key[i]=' ';//不够16位补空隔
 while(text[l]!='\0')
 {
  for(i=0;i<16&&text[l]!='\0';i++,l++)state[i]=text[l];//分组
  if(i<16)for(;i<16;i++)state[i]=' ';//分组不够16位，按空隔处理
  rijndeal();
     for(i=0;i<16;i++)
   text1[k++]=state[i];
    }
 text1[k]=NULL;
 cout<<"\n输出加密后的数据:\n";
 cout<}

void Rijndeal::invsubbyte(uint8 s[16])
{
 for(int i=0;i<16;i++)
  s[i]=invsbox[s[i]];
}

void Rijndeal::invshiftrows(uint8 s[16])
{
 int i,t;
 t=s[7];
 for(i=7;i>4;i--)s[i]=s[i-1];
 s[4]=t;
 t=s[8];s[8]=s[10];s[10]=t;
 t=s[9];s[9]=s[11];s[11]=t;
 t=s[12];
 for(i=12;i<15;i++)s[i]=s[i+1];
 s[15]=t;
}

void Rijndeal::invmixcolumns(uint8 s[16])
{
 int i;
 uint8 invmix[4][4]={14,11,13,9,9,14,11,13,13,9,14,11,11,13,9,14};
 uint8 ss[16];
 for(i=0;i<16;i++)ss[i]=s[i];
 for(i=0;i<4;i++)
  for(int j=0;j<4;j++)
  {
   int f[4];
   for(uint8 l=0;l<4;l++)
   {
    f[l]=ss[i+4*l];
    int a,b,c;
    a=(uint8)f[l]<<1;
    if(a&0x100)a^=0x11b;
    b=a<<1;
    if(b&0x100)b^=0x11b;
    c=b<<1;
    if(c&0x100)c^=0x11b;
    if(invmix[j][l]==9)
     f[l]=f[l]^c;
    else if(invmix[j][l]==11)
     f[l]=f[l]^a^c;
    else if(invmix[j][l]==13)
     f[l]=f[l]^b^c;
    else if(invmix[j][l]==14)
        f[l]=a^b^c;
   }
   s[4*j+i]=f[0]^f[1]^f[2]^f[3];
  }
}

void Rijndeal::invrijndeal()//组解密
{
 add(state,roundkey[10]);
 invshiftrows(state);
 invsubbyte(state);
 for(int i=9;i>0;i--)
 {
     add(state,roundkey[i]);
     invmixcolumns(state);
     invshiftrows(state);
     invsubbyte(state);
 }
    add(state,roundkey[0]);
}

void Rijndeal::jiemi()
{
 int l=0,k=0,i;
 while(text1[l]!=NULL)
 {
  for(i=0;i<16;i++,l++)
   state[i]=text1[l];
  invrijndeal();
  for(i=0;i<16;i++)
   text[k++]=state[i];
 }
 text[k]='\0';
 while(text[k-1]==' ')text[(k--)-1]='\0';
 cout<<"\n解密后得明文为:\n"<}

int main()
{
 Rijndeal C;
 gets(C.text);
 C.jiami();
 C.jiemi();
 return 0;
}