/*
*This program is about the S M S 4 algorithm.
*Author : Ting
*E-mail:kilvdn@yahoo.com.cn 
*Addr: China Unversity of Geoscience ( WuHan )
*/

＃i nclude <stdio.h>

//int key[16] ;
unsigned int  plaintext[16] , k[35] , rk[32] , x[35] ;

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

/*System constant value table*/
unsigned int FK[4] = { 0xa3b1bac6 , 0x56aa3350 , 0x677d9197 , 0xb27022dc };

/*Constant value table*/
unsigned int CK[32] =
{
    0x00070e15 , 0x1c232a31 , 0x383f464d , 0x545b6269 ,
    0x70777e85 , 0x8c939aa1 , 0xa8afb6bd , 0xc4cbd2d9 ,
    0xe0e7eef5 , 0xfc030a11 , 0x181f262d , 0x343b4249 ,
    0x50575e65 , 0x6c737a81 , 0x888f969d , 0xa4abb2b9 ,
    0xc0c7ced5 , 0xdce3eaf1 , 0xf8ff060d , 0x141b2229 ,
    0x30373e45 , 0x4c535a61 , 0x686f767d , 0x848b9299 ,
    0xa0a7aeb5 , 0xbcc3cad1 , 0xd8dfe6ed , 0xf4fb0209 ,
    0x10171e25 , 0x2c333a41 , 0x484f565d , 0x646b7279
};

/*Text*/
unsigned int key[16] =
{0x01,0x23,0x45,0x67,
0x89,0xab,0xcd,0xef,
0xfe,0xdc,0xba,0x98,
0x76,0x54,0x32,0x10};

unsigned int Shift ( unsigned int temp[] , unsigned int n ){  //循环左移
    unsigned int i , t ;
    while ( n -- ){
        t = temp[0] ;
        for (i=0;i<31;i++)
        temp[i] = temp[i+1] ;
        temp[31] = t ;   
    }
    t = 0 ;
    for ( i=0 ; i<32 ;i++ ){
        t =  t * 2 + temp[i] ;
    }
    return t ;
}

unsigned int TPlusfun(unsigned int tem){  //密钥扩展中的T'
    unsigned int a , b , c , d , i ,  temp1[32] , temp ;
    a = tem / 0x1000000 ;
    tem %= 0x1000000 ;
    b = tem / 0x10000 ;
    tem %= 0x10000    ;
    c = tem / 0x100 ;
    tem %= 0x100 ;
    d = tem ;
    a = SBOX[a] ;
    b = SBOX[b] ;
    c = SBOX[c] ;
    d = SBOX[d] ;
    temp = a*0x1000000 + b*0x10000 + c*0x100 + d ;
    a = temp ;
    for (i=32;i>0;i--){
        temp1[i-1] = temp % 2 ;
        temp /= 2;   
    }
    b = Shift(temp1,13) ;
    c = Shift(temp1,10) ;
    return a^b^c ;
}

void Key_Extend(){   //密钥扩展
    unsigned int i ;
    k[0] = ( key[0]*0x1000000 + key[1]*0x10000 + key[2]*0x100 + key[3])^FK[0] ;
    k[1] = ( key[4]*0x1000000 + key[5]*0x10000 + key[6]*0x100 + key[7])^FK[1] ;
    k[2] = ( key[8]*0x1000000 + key[9]*0x10000 + key[10]*0x100 + key[11])^FK[2] ;
    k[3] = ( key[12]*0x1000000 + key[13]*0x10000 + key[14]*0x100 + key[15])^FK[3] ;   
    for ( i = 0 ; i < 32 ; i ++ ){
        k[4+i] = k[i] ^ TPlusfun(k[i+1]^k[i+2]^k[i+3]^CK[i]) ;   
        rk[i] = k[4+i] ;
    }
}

unsigned int Tfun( unsigned int tem ){
 int i ; 
 unsigned int a , b , c , d  ,  temp1[32] , temp2[32] , temp ;
    a = tem / 0x1000000 ;
    tem %= 0x1000000 ;
    b = tem / 0x10000 ;
    tem %= 0x10000    ;
    c = tem / 0x100 ;
    tem %= 0x100 ;
    d = tem ;
    a = SBOX[a] ;
    b = SBOX[b] ;
    c = SBOX[c] ;
    d = SBOX[d] ;
    temp = a*0x1000000 + b*0x10000 + c*0x100 + d ;
    a = temp ;
    for (i=32;i>0;i--){
        temp1[i-1] = temp % 2 ;
        temp /= 2;   
    }
    b = Shift(temp1,2) ;
    c = Shift(temp1,8) ;
    d = Shift(temp1,8) ;
    tem = Shift (temp1,6) ;
    return a^b^c^d^tem ; 
}

void Encry(){
 for ( int i=4 ; i < 36 ; i ++ )
  x[i] = x[i-4]^Tfun( x[i-3]^x[i-2]^x[i-1]^rk[i-4]) ;
}

void Decry(){
 for ( int i=4 ; i<36 ; i ++ )
  x[i] = x[i-4]^Tfun( x[i-3]^x[i-2]^x[i-1]^rk[31-i+4]) ;
}

int main(){
    unsigned int i ;

    while (1){
        for (i=0;i<4;i++)
        scanf("%x",&x[i]) ;
//        scanf("%d",&i) ;
        Key_Extend() ;
//        Encry();
  Decry();

        for ( i = 0 ; i < 36 ; i ++ )
        printf("%d      %x\n",i , x[i]) ;
    }
   
    return 0;   
}

/*

01234567
89abcdef
fedcba98
76543210

681edf34
d206965e
86b3e94f
536e4246
*/