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| #include <iostream>
using namespace std;
typedef unsigned char byte;
static const byte fTable[256] = {
0xa3,0xd7,0x09,0x83,0xf8,0x48,0xf6,0xf4,0xb3,0x21,0x15,0x78,0x99,0xb1,0xaf,0xf9,
0xe7,0x2d,0x4d,0x8a,0xce,0x4c,0xca,0x2e,0x52,0x95,0xd9,0x1e,0x4e,0x38,0x44,0x28,
0x0a,0xdf,0x02,0xa0,0x17,0xf1,0x60,0x68,0x12,0xb7,0x7a,0xc3,0xe9,0xfa,0x3d,0x53,
0x96,0x84,0x6b,0xba,0xf2,0x63,0x9a,0x19,0x7c,0xae,0xe5,0xf5,0xf7,0x16,0x6a,0xa2,
0x39,0xb6,0x7b,0x0f,0xc1,0x93,0x81,0x1b,0xee,0xb4,0x1a,0xea,0xd0,0x91,0x2f,0xb8,
0x55,0xb9,0xda,0x85,0x3f,0x41,0xbf,0xe0,0x5a,0x58,0x80,0x5f,0x66,0x0b,0xd8,0x90,
0x35,0xd5,0xc0,0xa7,0x33,0x06,0x65,0x69,0x45,0x00,0x94,0x56,0x6d,0x98,0x9b,0x76,
0x97,0xfc,0xb2,0xc2,0xb0,0xfe,0xdb,0x20,0xe1,0xeb,0xd6,0xe4,0xdd,0x47,0x4a,0x1d,
0x42,0xed,0x9e,0x6e,0x49,0x3c,0xcd,0x43,0x27,0xd2,0x07,0xd4,0xde,0xc7,0x67,0x18,
0x89,0xcb,0x30,0x1f,0x8d,0xc6,0x8f,0xaa,0xc8,0x74,0xdc,0xc9,0x5d,0x5c,0x31,0xa4,
0x70,0x88,0x61,0x2c,0x9f,0x0d,0x2b,0x87,0x50,0x82,0x54,0x64,0x26,0x7d,0x03,0x40,
0x34,0x4b,0x1c,0x73,0xd1,0xc4,0xfd,0x3b,0xcc,0xfb,0x7f,0xab,0xe6,0x3e,0x5b,0xa5,
0xad,0x04,0x23,0x9c,0x14,0x51,0x22,0xf0,0x29,0x79,0x71,0x7e,0xff,0x8c,0x0e,0xe2,
0x0c,0xef,0xbc,0x72,0x75,0x6f,0x37,0xa1,0xec,0xd3,0x8e,0x62,0x8b,0x86,0x10,0xe8,
0x08,0x77,0x11,0xbe,0x92,0x4f,0x24,0xc5,0x32,0x36,0x9d,0xcf,0xf3,0xa6,0xbb,0xac,
0x5e,0x6c,0xa9,0x13,0x57,0x25,0xb5,0xe3,0xbd,0xa8,0x3a,0x01,0x05,0x59,0x2a,0x46
};
/*typedef struct
{
byte key[10];
} Data;*/
void makeKey(byte key[])
{
for (int i = 0; i < 10; i++)
{
key[i] = rand() % 256;
//cout << key->str[i];
}
cout << endl;
}
byte G_block(byte key[], int k, int w)
{
byte g1, g2, g3, g4, g5, g6;
g1 = (w >> 8) & 0xff;
g2 = w & 0xff;
g3 = fTable[g2 ^ key[(4 * k) % 10]] ^ g1;
g4 = fTable[g3 ^ key[(4 * k + 1) % 10]] ^ g2;
g5 = fTable[g4 ^ key[(4 * k + 2) % 10]] ^ g3;
g6 = fTable[g5 ^ key[(4 * k + 3) % 10]] ^ g4;
return ((g5 << 8) | g6);
}
void encrypt(byte key[], byte input[], byte* ciphertext)
{
int w1, w2, w3, w4;
int k = 1;
w1 = (input[0] << 8) | input[1];
w2 = (input[2] << 8) | input[3];
w3 = (input[4] << 8) | input[5];
w4 = (input[6] << 8) | input[7];
for (int i = 0; i < 2; i++)
{
for (int j = 0; j < 8; j++)
{
w1 = G_block(key, k, w1) ^ w4 ^ k;
w2 = G_block(key, k, w1);
w3 = w2;
w4 = w3;
/*temp = w4;
w3 = w4;
w2 = G_block(key, k, w1);
w1 = G_block(key, k, w1) ^ temp ^ k;*/
k++;
}
for (int j = 0; j < 8; j++) {
/*temp = w4;
w4 = w3;
w3 = w1 ^ w2 ^ k;
w2 = G_block(key, k, w1);
w1 = temp;*/
w1 = w4;
w2 = G_block(key, k, w1);
w3 = w1 ^ w2 & k;
w4 = w3;
k++;
}
}
ciphertext[0] = (byte)(w1 >> 8);
ciphertext[1] = (byte)w1;
ciphertext[2] = (byte)(w2 >> 8);
ciphertext[3] = (byte)w2;
ciphertext[4] = (byte)(w3 >> 8);
ciphertext[5] = (byte)w3;
ciphertext[6] = (byte)(w4 >> 8);
ciphertext[7] = (byte)w4;
//return ciphertext[8];
}
int main()
{
byte input[8] = { 0x45, 0x6e, 0x63, 0x72, 0x79, 0x70, 0x74, 0x31 };
byte key[10] = {};
byte* ciphertext = new byte[8];
byte output[8] = {};
makeKey(key);
encrypt(key, input, ciphertext);
for (int i = 0; i < 8; i++)
{
cout << hex << ciphertext[i] << endl;
}
} |
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