photon.h 5.32 KB
Newer Older
lwc-tester committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220


#ifndef Header_h
#define Header_h


#endif /* Header_h */
//
//  photon.c
//  photon
//


#ifndef photon_c
#define photon_c

typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;
typedef unsigned long long ul;


u8 sbox[16] = {12, 5, 6, 11, 9, 0, 10, 13, 3, 14, 15, 8, 4, 7, 1, 2};

const u8 MixColMatrix[8][8] = {{ 2,  4,  2, 11,  2,  8,  5,  6},
    {12,  9,  8, 13,  7,  7,  5,  2},
    { 4,  4, 13, 13,  9,  4, 13,  9},
    { 1,  6,  5,  1, 12, 13, 15, 14},
    {15, 12,  9, 13, 14,  5, 14, 13},
    { 9, 14,  5, 15,  4, 12,  9,  6},
    {12,  2,  2, 10,  3,  1,  1, 14},
    {15,  1, 13, 10,  5, 10,  2,  3}};

const u8 RC[8][12] = {{1, 3, 7, 14, 13, 11, 6, 12, 9, 2, 5, 10},
    {0, 2, 6, 15, 12, 10, 7, 13, 8, 3, 4, 11},
    {2, 0, 4, 13, 14, 8, 5, 15, 10, 1, 6, 9},
    {6, 4, 0, 9, 10, 12, 1, 11, 14, 5, 2, 13},
    {14, 12, 8, 1, 2, 4, 9, 3, 6, 13, 10, 5},
    {15, 13, 9, 0, 3, 5, 8, 2, 7, 12, 11, 4},
    {13, 15, 11, 2, 1, 7, 10, 0, 5, 14, 9, 6},
    {9, 11, 15, 6, 5, 3, 14, 4, 1, 10, 13, 2}};


const u8 ReductionPoly = 0x3;
const u8 WORDFILTER = ((u8) 1<<4)-1;

#define CONST_A 0x000000000000000000000001;
#define CONST_M 0x000000000000000000000002;




//............ALL MODULES............


//The function to store four characters to unsigned u16//
void store16(u8 *Bytes, u16 word)
{ int i;
    for (i = 0 ; i < 2 ; i++) {Bytes[i] = (u8)word;  word >>= 8; }
}



//The function to load a u16 to 2 byte array//
u16 load16(u8* Bytes)
{int i; u16 Block;
    Block=0;
    Block = (u16)(Bytes[1]);
    for(i = 0; i < 1; i++) {Block <<= 8; Block = (Block)^(u16)(Bytes[i]);}
    return Block;}











//The function to store four characters to unsigned u32//
void store32(u8 *Bytes, u32 word)
{ int i;
    for (i = 0 ; i < 4 ; i++) {Bytes[i] = (u8)word;  word >>= 8; }
}



//The function to load a u32 to 4 byte array//
u32 load32(u8* Bytes)
{int i; u32 Block;
    Block=0;
    Block = (u32)(Bytes[3]);
    for(i = 0; i < 3; i++) {Block <<= 8; Block = (Block)^(u32)(Bytes[i]);}
    return Block;}



u8 FieldMult(u8 a, u8 b)
{
    u8 x = a, ret = 0;
    u32 i;
    for(i = 0; i < 4; i++) {
        if((b>>i)&1) ret ^= x;
        if((x>>3)&1) {
            x <<= 1;
            x ^= ReductionPoly;
        }
        else x <<= 1;
    }
    return ret&WORDFILTER;
}



u8* AddRC(u8* State, int round)
{
    int i;
    for(i = 0; i < 8; i++)
        State[4*i] ^= RC[i][round];
    
    return State;
}



u8* SubCell(u8* State)
{
    u32 i;
    for(i = 0 ; i < 32 ; i++)
    {
        State[i] = sbox[State[i]&15] ^ ((sbox[State[i] >> 4])<<4);
    }
    return State;
}




u8* ShiftRow(u8* State)
{
    u32 i;
    
    for(i = 0 ; i < 8 ; i++)
    {
        store32(State+4*i, (((load32(State+4*i))>>4*i)|((load32(State+4*i))<<((32-4*i)%32))));
    }
    
    return State;
}



u8 TwoColMult(u8 a0, u8 a1, u8 a2, u8 a3, u8 a4, u8 a5, u8 a6, u8 a7, u32 index)
{
    return (FieldMult((a0&15), MixColMatrix[index][0])^ (FieldMult((a0>>4), MixColMatrix[index][0])<<4) ^ FieldMult((a1&15), MixColMatrix[index][1])^ (FieldMult((a1>>4), MixColMatrix[index][1])<<4) ^ FieldMult((a2&15), MixColMatrix[index][2])^ (FieldMult((a2>>4), MixColMatrix[index][2])<<4) ^ FieldMult((a3&15), MixColMatrix[index][3])^ (FieldMult((a3>>4), MixColMatrix[index][3])<<4) ^ FieldMult((a4&15), MixColMatrix[index][4])^ (FieldMult((a4>>4), MixColMatrix[index][4])<<4) ^ FieldMult((a5&15), MixColMatrix[index][5])^ (FieldMult((a5>>4), MixColMatrix[index][5])<<4)^ FieldMult((a6&15), MixColMatrix[index][6])^ (FieldMult((a6>>4), MixColMatrix[index][6])<<4)^ FieldMult((a7&15), MixColMatrix[index][7])^ (FieldMult((a7>>4), MixColMatrix[index][7])<<4));
    
    
}




u8* MixColumn(u8 *State)
{
    u32 j;
    u8 a0, a1, a2, a3, a4, a5, a6, a7;
    
    for(j = 0 ; j < 4 ; j++)
    {
        a0 =  TwoColMult(State[0+j], State[4+j], State[8+j], State[12+j], State[16+j], State[20+j], State[24+j], State[28+j], 0);
        
        a1 =  TwoColMult(State[0+j], State[4+j], State[8+j], State[12+j], State[16+j], State[20+j], State[24+j], State[28+j], 1);
        
        a2 =  TwoColMult(State[0+j], State[4+j], State[8+j], State[12+j], State[16+j], State[20+j], State[24+j], State[28+j], 2);
        
        a3 =  TwoColMult(State[0+j], State[4+j], State[8+j], State[12+j], State[16+j], State[20+j], State[24+j], State[28+j], 3);
        
        a4 =  TwoColMult(State[0+j], State[4+j], State[8+j], State[12+j], State[16+j], State[20+j], State[24+j], State[28+j], 4);
        
        a5 =  TwoColMult(State[0+j], State[4+j], State[8+j], State[12+j], State[16+j], State[20+j], State[24+j], State[28+j], 5);
        
        a6 =  TwoColMult(State[0+j], State[4+j], State[8+j], State[12+j], State[16+j], State[20+j], State[24+j], State[28+j], 6);
        
        a7 =  TwoColMult(State[0+j], State[4+j], State[8+j], State[12+j], State[16+j], State[20+j], State[24+j], State[28+j], 7);
        
        State[j] = a0;
        State[4+j] = a1;
        State[8+j] = a2;
        State[12+j] = a3;
        State[16+j] = a4;
        State[20+j] = a5;
        State[24+j] = a6;
        State[28+j] = a7;
        
        
    }
    return State;
}



u8* PHOTON_256_Permutation(u8* State)
{
    int i;
    
    for(i = 0; i < 12; i++)
    {
        State = AddRC(State, i);
        State = SubCell(State);
        State = ShiftRow(State);
        State = MixColumn(State);
        
    }
    return State;
}


#endif /* photon */