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- #ifndef MyCLassesH
- #define MyClassesH
- typedef unsigned char column [4];
- typedef unsigned char t_matr [4][4];
- unsigned char mixmatr [4][4]={{0x02, 0x03, 0x01, 0x01},
- {0x01, 0x02, 0x03, 0x01,},
- {0x01, 0x01, 0x02, 0x03},
- {0x03, 0x01, 0x01, 0x02}};
- unsigned char invmixmatr [4][4]={{0x0e, 0x0b, 0x0d, 0x09},
- {0x09, 0x0e, 0x0b, 0x0d,},
- {0x0d, 0x09, 0x0e, 0x0b},
- {0x0b, 0x0d, 0x09, 0x0e}};
- class Matrix
- { public:
- t_matr m;
- public:
- void Initialize(t_matr a)
- {
- for ( int i = 0; i < 4; i++)
- {
- for ( int j = 0; j < 4; j++) this->m[i][j]=a[i][j];
- }
- }
- void ShiftOneLeft (int i)
- {
- unsigned char t;
- t=this->m[i][0];
- for (int j = 0; j < 3; j++) this->m[i][j]=this->m[i][j+1];
- this->m[i][3] = t;
- }
- void ShiftOneRight (int i)
- {
- unsigned char t;
- t=this->m[i][3];
- for (int j = 3; j > 0; j--) this->m[i][j]=this->m[i][j-1];
- this->m[i][0] = t;
- }
- void ShiftRows ()
- {
- ShiftOneLeft(1);
- ShiftOneLeft(2);
- ShiftOneLeft(2);
- ShiftOneLeft(3);
- ShiftOneLeft(3);
- ShiftOneLeft(3);
- }
- void InvShiftRows ()
- {
- ShiftOneRight(1);
- ShiftOneRight(2);
- ShiftOneRight(2);
- ShiftOneRight(3);
- ShiftOneRight(3);
- ShiftOneRight(3);
- }
- };
- class ChangesTable
- {
- private:
- int Sb [256];
- int InvSb [256];
- public:
- static ChangesTable& const Instance()
- {
- static ChangesTable theSingleInstance;
- return theSingleInstance;
- }
- void Initialize()
- {
- int tempb [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
- } ;
- int tempinvb [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,
- };
- for ( int i = 0; i < 256; i++)
- {
- this->Sb[i]=tempb[i];
- this->InvSb[i]=tempinvb[i];
- }
- }
- unsigned char GetSBoxValue(unsigned char n)
- {
- return (this->Sb[n]);
- }
- unsigned char GetInvSBoxValue(unsigned char n)
- {
- return (this->InvSb[n]);
- }
- private:
- ChangesTable(){}
- ChangesTable(ChangesTable& root){}
- ChangesTable& operator=(ChangesTable&){}
- };
- class Operations
- { private:
- public:
- unsigned SubWord( unsigned w)
- {
- unsigned n,n1;
- unsigned w2,w1;
- n=(w & 0xff000000)>>24;
- w1=ChangesTable.Instance().GetSBoxValue(n);
- n=(w & 0x00ff0000)>>16;
- w1=w1<<8;
- w1=w1|ChangesTable.Instance().GetSBoxValue(n);
- n=(w & 0x0000ff00)>>8;
- w1=w1<<8;
- w1=w1|ChangesTable.Instance().GetSBoxValue(n);
- n=(w & 0x000000ff);
- w1=w1<<8;
- w1=w1|ChangesTable.Instance().GetSBoxValue(n);
- return (w1);
- }
- unsigned MulX(unsigned char n)
- {
- unsigned char n1,res=0;
- n1=n & 0x80;
- if (n1) { res=(n<<1)^ 0x1b;}
- else res=n<<1;
- return res;
- }
- unsigned Mul(unsigned x1, unsigned x2)
- {
- unsigned char stepeni_x [8],res,x3,i,mask=0x1;
- stepeni_x[0]=x1;
- res=0;
- for (i = 1; i < 8; i++)
- {
- stepeni_x[i]=MulX(stepeni_x[i-1]);
- }
- for (i = 0; i<8; i++)
- {
- x3=(x2 & mask);
- if (x3!=0)
- {
- res=(res^stepeni_x[i]);
- }
- else {};
- mask=mask<<1;
- x3=0;
- }
- return res;
- }
- unsigned Rcon(int n)
- {
- unsigned n1=0x1;
- unsigned w;
- int i;
- for (i = 1; i < n; i++)
- {
- n1=MulX(n1);
- }
- n1=(n1 << 24);
- return n1;
- }
- unsigned RotWord(unsigned w)
- {
- unsigned n;
- unsigned w1;
- n=w >> 24;
- w1=w<<8;
- w1=w1 | n;
- return w1;
- }
- };
- class AbstractSymmetricAlgorythm
- {
- virtual void Encrypt() = 0;
- virtual void Decrypt() = 0;
- };
- class AES: public AbstractSymmetricAlgorythm
- { private:
- unsigned char state [16];
- unsigned keys [44];
- unsigned key[4];
- unsigned char key1 [16];
- t_matr statematr;
- Operations operations;
- Matrix m;
- column onecol;
- void Printstate()
- {
- for (int i = 0; i < 16; i++) printf(" %x",state[i]);
- printf("\n");
- printf("\n");
- }
- void SubBytes()
- {
- for ( int i = 0; i < 16; i++ )
- this->state[i]=ChangesTable.Instance().GetSBoxValue(state[i]);
- }
- void InvSubBytes()
- {
- for (int i = 0; i < 16; i++ )
- {
- state[i]=ChangesTable.Instance().GetInvSBoxValue(state[i]);
- }
- }
- void StateToMatr()
- {
- int i,j;
- bool flag=true;
- for (i = 0; i < 4; i++)
- {
- for (j = 0; j < 4; j++) this->statematr[j][i]=this->state[i*4+j];
- }
- }
- void MatrToState()
- {
- for (int i = 0; i < 4; i++)
- {
- for (int j = 0; j < 4; j++) this->state[i*4+j]=this->statematr[j][i];
- }
- }
- void MulOneColumn(int num)
- {
- column t,t1;
- for (int i = 0; i < 4; i++) t[i]=this->statematr[i][num];
- for (int i = 0; i < 4; i++)
- {
- t1[i]=0;
- for (int j = 0; j < 4; j++)
- {
- t1[i]=t1[i]^(operations.Mul(t[j],mixmatr[i][j]));
- }
- }
- for (int i = 0; i < 4; i++) this->onecol[i]=t1[i];
- }
- void InvMulOneColumn(int num)
- {
- column t,t1;
- for (int i = 0; i < 4; i++) t[i]=statematr[i][num];
- for (int i = 0; i < 4; i++)
- {
- t1[i]=0;
- for (int j = 0; j < 4; j++) t1[i]=t1[i]^(operations.Mul(t[j],invmixmatr[i][j]));
- }
- for (int i = 0; i < 4; i++) {
- this->onecol[i]=t1[i];
- }
- }
- void MixColumns ()
- {
- for (int i=0; i < 4; i++)
- {
- MulOneColumn(i);
- for (int j = 0; j < 4; j++) {
- this->statematr[j][i]=this->onecol[j];
- this->onecol[j]=0;
- }
- }
- }
- void InvMixColumns ()
- {
- for (int i=0; i < 4; i++)
- {
- InvMulOneColumn(i);
- for (int j = 0; j < 4; j++)
- {
- this->statematr[j][i]=this->onecol[j];
- this->onecol[j]=0;
- }
- }
- }
- void KeyExpansion()
- {
- unsigned tmp,w1,r;
- int i,j;
- i=4;
- while (i<44)
- {
- tmp=this->keys[i-1];
- if ( (i%4)==0)
- {
- w1=operations.RotWord(tmp);
- w1=operations.SubWord(w1);
- tmp=w1 ^ operations.Rcon(i/4);
- }
- this->keys[i]=this->keys[i-4] ^ tmp;
- i++;
- }
- }
- void AddRoundKey(int n)
- {
- unsigned char w,st1;
- for (int i = 0; i < 4; i++)
- {
- w=(this->keys[n*4+i] >> 24) ;
- this->key1[i*4]=w;
- w=( (this->keys[n*4+i] & 0xFF0000)>>16);
- this->key1[i*4+1]=w;
- w=( (this->keys[n*4+i] )&0xFF00)>>8;
- this->key1[i*4+2]=w;
- w= this->keys[n*4+i]&0xFF;
- this->key1[i*4+3]=w;
- w=0x0;
- }
- for (int i = 0; i < 16; i++) this->state[i]=this->state[i] ^ this->key1[i];
- }
- public:
- void Encrypt()
- {
- bool flag;
- int k;
- printf("Input text \n");
- for ( int i = 0; i < 16; i++) scanf("%x",&this->state[i]);
- printf("Input key \n");
- for ( int i = 0; i < 4; i++) scanf("%x",&this->keys[i]);
- KeyExpansion();
- AddRoundKey(0);
- printf("\n") ;
- for (int i =1 ;i < 10; i++)
- {
- printf("Round %i",i);
- printf("\n");
- SubBytes();
- StateToMatr();
- m.Initialize(this->statematr);
- m.ShiftRows();
- for ( int i = 0; i < 4; i++)
- {
- for ( int j = 0; j < 4; j++)
- {
- this->statematr[i][j]=m.m[i][j];
- }
- }
- MixColumns();
- MatrToState ();
- AddRoundKey(i);
- printf("\n");
- }
- SubBytes();
- StateToMatr();
- m.Initialize(this->statematr);
- m.ShiftRows();
- for ( int i = 0; i < 4; i++)
- {
- for ( int j = 0; j < 4; j++)
- {
- this->statematr[i][j]=m.m[i][j];
- }
- }
- MatrToState();
- AddRoundKey(10);
- printf("\n");
- printf(" Final State \n");
- Printstate();
- scanf("%i",&k);
- }
- void Decrypt()
- {
- bool flag;
- int k;
- printf("Input coded text \n");
- for ( int i = 0; i < 16; i++) scanf("%x",&this->state[i]);
- printf("Input key \n");
- for ( int i = 0; i < 4; i++) scanf("%x",&this->keys[i]);
- KeyExpansion();
- AddRoundKey(10);
- Printstate();
- printf("\n");
- StateToMatr();
- for ( int i=9; i > 0; i--)
- {
- printf("\n");
- printf("Round %i",i);
- m.Initialize(this->statematr);
- m.InvShiftRows();
- for ( int i = 0; i < 4; i++)
- {
- for ( int j = 0; j < 4; j++)
- {
- this->statematr[i][j]=m.m[i][j];
- }
- }
- MatrToState();
- InvSubBytes();
- AddRoundKey(i);
- printf("\n");
- Printstate();
- StateToMatr();
- InvMixColumns();
- }
- printf("\n");
- m.Initialize(this->statematr);
- m.InvShiftRows();
- for ( int i = 0; i < 4; i++)
- {
- for ( int j = 0; j < 4; j++)
- {
- this->statematr[i][j]=m.m[i][j];
- }
- }
- MatrToState();
- InvSubBytes();
- AddRoundKey(0);
- printf("\n");
- printf(" Final State \n");
- Printstate();
- scanf("%i",&k);
- }
- };
- #endif
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