typedef unsigned char uchar;
typedef unsigned int uint;
typedef unsigned long ulong;
typedef unsigned char BYTE;
// CRC 高8位查表
uchar tool_crc_htalbe[256] =
{
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40,
0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41,
0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40
};
// CRC校验查表低8位
uchar tool_crc_ltalbe[256] =
{
0x00, 0xC0, 0xC1, 0x01, 0xC3, 0x03, 0x02, 0xC2, 0xC6, 0x06, 0x07, 0xC7, 0x05, 0xC5, 0xC4, 0x04,
0xCC, 0x0C, 0x0D, 0xCD, 0x0F, 0xCF, 0xCE, 0x0E, 0x0A, 0xCA, 0xCB, 0x0B, 0xC9, 0x09, 0x08, 0xC8,
0xD8, 0x18, 0x19, 0xD9, 0x1B, 0xDB, 0xDA, 0x1A, 0x1E, 0xDE, 0xDF, 0x1F, 0xDD, 0x1D, 0x1C, 0xDC,
0x14, 0xD4, 0xD5, 0x15, 0xD7, 0x17, 0x16, 0xD6, 0xD2, 0x12, 0x13, 0xD3, 0x11, 0xD1, 0xD0, 0x10,
0xF0, 0x30, 0x31, 0xF1, 0x33, 0xF3, 0xF2, 0x32, 0x36, 0xF6, 0xF7, 0x37, 0xF5, 0x35, 0x34, 0xF4,
0x3C, 0xFC, 0xFD, 0x3D, 0xFF, 0x3F, 0x3E, 0xFE, 0xFA, 0x3A, 0x3B, 0xFB, 0x39, 0xF9, 0xF8, 0x38,
0x28, 0xE8, 0xE9, 0x29, 0xEB, 0x2B, 0x2A, 0xEA, 0xEE, 0x2E, 0x2F, 0xEF, 0x2D, 0xED, 0xEC, 0x2C,
0xE4, 0x24, 0x25, 0xE5, 0x27, 0xE7, 0xE6, 0x26, 0x22, 0xE2, 0xE3, 0x23, 0xE1, 0x21, 0x20, 0xE0,
0xA0, 0x60, 0x61, 0xA1, 0x63, 0xA3, 0xA2, 0x62, 0x66, 0xA6, 0xA7, 0x67, 0xA5, 0x65, 0x64, 0xA4,
0x6C, 0xAC, 0xAD, 0x6D, 0xAF, 0x6F, 0x6E, 0xAE, 0xAA, 0x6A, 0x6B, 0xAB, 0x69, 0xA9, 0xA8, 0x68,
0x78, 0xB8, 0xB9, 0x79, 0xBB, 0x7B, 0x7A, 0xBA, 0xBE, 0x7E, 0x7F, 0xBF, 0x7D, 0xBD, 0xBC, 0x7C,
0xB4, 0x74, 0x75, 0xB5, 0x77, 0xB7, 0xB6, 0x76, 0x72, 0xB2, 0xB3, 0x73, 0xB1, 0x71, 0x70, 0xB0,
0x50, 0x90, 0x91, 0x51, 0x93, 0x53, 0x52, 0x92, 0x96, 0x56, 0x57, 0x97, 0x55, 0x95, 0x94, 0x54,
0x9C, 0x5C, 0x5D, 0x9D, 0x5F, 0x9F, 0x9E, 0x5E, 0x5A, 0x9A, 0x9B, 0x5B, 0x99, 0x59, 0x58, 0x98,
0x88, 0x48, 0x49, 0x89, 0x4B, 0x8B, 0x8A, 0x4A, 0x4E, 0x8E, 0x8F, 0x4F, 0x8D, 0x4D, 0x4C, 0x8C,
0x44, 0x84, 0x85, 0x45, 0x87, 0x47, 0x46, 0x86, 0x82, 0x42, 0x43, 0x83, 0x41, 0x81, 0x80, 0x40
};
//加密矩阵
uchar tool_security_encrypt_table[256] =
{
0x56, 0x80, 0x42, 0x84, 0x45, 0x87, 0x47, 0x86, 0x44, 0x85, 0x82, 0x46, 0x43, 0x83, 0x41, 0x81,
0x98, 0x58, 0x9A, 0x5C, 0x9D, 0x5F, 0x9F, 0x5E, 0x9C, 0x5D, 0x5A, 0x9E, 0x9B, 0x5B, 0x99, 0x59,
0x8C, 0x4C, 0x8E, 0x48, 0x89, 0x4B, 0x8B, 0x4A, 0x88, 0x49, 0x4E, 0x8A, 0x8F, 0x4F, 0x8D, 0x4D,
0x54, 0x40, 0x94, 0x90, 0x51, 0x93, 0x53, 0x92, 0x50, 0x91, 0x96, 0x52, 0x57, 0x97, 0x55, 0x95,
0x04, 0xC4, 0x06, 0xC0, 0x01, 0xC3, 0x03, 0xC2, 0x00, 0xC1, 0xC6, 0x02, 0x07, 0xC7, 0x05, 0xC5,
0x10, 0xD0, 0x12, 0xD4, 0x15, 0xD7, 0x17, 0xD6, 0x14, 0xD5, 0xD2, 0x16, 0x13, 0xD3, 0x11, 0xD1,
0x38, 0xF8, 0x3A, 0xFC, 0x3D, 0xFF, 0x3F, 0xFE, 0x3C, 0xFD, 0xFA, 0x3E, 0x3B, 0xFB, 0x39, 0xF9,
0x7C, 0xBC, 0x7E, 0xB8, 0x79, 0xBB, 0x7B, 0xBA, 0x78, 0xB9, 0xBE, 0x7A, 0x7F, 0xBF, 0x7D, 0xBD,
0xA4, 0x64, 0xA6, 0x60, 0xA1, 0x63, 0xA3, 0x62, 0xA0, 0x61, 0x66, 0xA2, 0xA7, 0x67, 0xA5, 0x65,
0xE0, 0x20, 0xE2, 0x24, 0xE5, 0x27, 0xE7, 0x26, 0xE4, 0x25, 0x22, 0xE6, 0xE3, 0x23, 0xE1, 0x21,
0xF4, 0x34, 0xF6, 0x30, 0xF1, 0x33, 0xF3, 0x32, 0xF0, 0x31, 0x36, 0xF2, 0xF7, 0x37, 0xF5, 0x35,
0xDC, 0x1C, 0xDE, 0x18, 0xD9, 0x1B, 0xDB, 0x1A, 0xD8, 0x19, 0x1E, 0xDA, 0xDF, 0x1F, 0xDD, 0x1D,
0xC8, 0x08, 0xCA, 0x0C, 0xCD, 0x0F, 0xCF, 0x0E, 0xCC, 0x0D, 0x0A, 0xCE, 0xCB, 0x0B, 0xC9, 0x09,
0xB0, 0x70, 0xB2, 0x74, 0xB5, 0x77, 0xB7, 0x76, 0xB4, 0x75, 0x72, 0xB6, 0xB3, 0x73, 0xB1, 0x71,
0x68, 0xA8, 0x6A, 0xAC, 0x6D, 0xAF, 0x6F, 0xAE, 0x6C, 0xAD, 0xAA, 0x6E, 0x6B, 0xAB, 0x69, 0xA9,
0x2C, 0xEC, 0x2E, 0xE8, 0x29, 0xEB, 0x2B, 0xEA, 0x28, 0xE9, 0xEE, 0x2A, 0x2F, 0xEF, 0x2D, 0xED
};
//解密矩阵
uchar tool_security_decrypt_table[256] =
{
0x48, 0x44, 0x4b, 0x46, 0x40, 0x4e, 0x42, 0x4c, 0xc1, 0xcf, 0xca, 0xcd, 0xc3, 0xc9, 0xc7, 0xc5,
0x50, 0x5e, 0x52, 0x5c, 0x58, 0x54, 0x5b, 0x56, 0xb3, 0xb9, 0xb7, 0xb5, 0xb1, 0xbf, 0xba, 0xbd,
0x91, 0x9f, 0x9a, 0x9d, 0x93, 0x99, 0x97, 0x95, 0xf8, 0xf4, 0xfb, 0xf6, 0xf0, 0xfe, 0xf2, 0xfc,
0xa3, 0xa9, 0xa7, 0xa5, 0xa1, 0xaf, 0xaa, 0xad, 0x60, 0x6e, 0x62, 0x6c, 0x68, 0x64, 0x6b, 0x66,
0x31, 0x0e, 0x02, 0x0c, 0x08, 0x04, 0x0b, 0x06, 0x23, 0x29, 0x27, 0x25, 0x21, 0x2f, 0x2a, 0x2d,
0x38, 0x34, 0x3b, 0x36, 0x30, 0x3e, 0x00, 0x3c, 0x11, 0x1f, 0x1a, 0x1d, 0x13, 0x19, 0x17, 0x15,
0x83, 0x89, 0x87, 0x85, 0x81, 0x8f, 0x8a, 0x8d, 0xe0, 0xee, 0xe2, 0xec, 0xe8, 0xe4, 0xeb, 0xe6,
0xd1, 0xdf, 0xda, 0xdd, 0xd3, 0xd9, 0xd7, 0xd5, 0x78, 0x74, 0x7b, 0x76, 0x70, 0x7e, 0x72, 0x7c,
0x01, 0x0f, 0x0a, 0x0d, 0x03, 0x09, 0x07, 0x05, 0x28, 0x24, 0x2b, 0x26, 0x20, 0x2e, 0x22, 0x2c,
0x33, 0x39, 0x37, 0x35, 0x32, 0x3f, 0x3a, 0x3d, 0x10, 0x1e, 0x12, 0x1c, 0x18, 0x14, 0x1b, 0x16,
0x88, 0x84, 0x8b, 0x86, 0x80, 0x8e, 0x82, 0x8c, 0xe1, 0xef, 0xea, 0xed, 0xe3, 0xe9, 0xe7, 0xe5,
0xd0, 0xde, 0xd2, 0xdc, 0xd8, 0xd4, 0xdb, 0xd6, 0x73, 0x79, 0x77, 0x75, 0x71, 0x7f, 0x7a, 0x7d,
0x43, 0x49, 0x47, 0x45, 0x41, 0x4f, 0x4a, 0x4d, 0xc0, 0xce, 0xc2, 0xcc, 0xc8, 0xc4, 0xcb, 0xc6,
0x51, 0x5f, 0x5a, 0x5d, 0x53, 0x59, 0x57, 0x55, 0xb8, 0xb4, 0xbb, 0xb6, 0xb0, 0xbe, 0xb2, 0xbc,
0x90, 0x9e, 0x92, 0x9c, 0x98, 0x94, 0x9b, 0x96, 0xf3, 0xf9, 0xf7, 0xf5, 0xf1, 0xff, 0xfa, 0xfd,
0xa8, 0xa4, 0xab, 0xa6, 0xa0, 0xae, 0xa2, 0xac, 0x61, 0x6f, 0x6a, 0x6d, 0x63, 0x69, 0x67, 0x65
};
void tool_security_encrypt(uchar* buf, uint len)
{
uchar i;
//异或
for (i = 1; i < len; i++)
{
*(buf + i) = (*(buf + i))^(*buf);
}
//加密
for (i = 0;(i < len + 1); i++)
{
*(buf + i) = tool_security_encrypt_table[*(buf + i)];
}
}
void tool_security_decrypt(uchar* buf, uint len)
{
uchar i;
/*解密*/
//查表
for (i = 0;i < len; i++)
{
*(buf + i) = tool_security_decrypt_table[*(buf + i)];
}
/*异或*/
//与随机数异或
for (i = 1;i < len; i++)
{
*(buf + i) = (*(buf + i))^(*buf);
}
//剔除随机数
for (i = 0; i < len - 1; i++)
{
*(buf + i) = (*(buf + i + 1));
}
}
void tool_data_displacement(uchar* buf, uint len)//结构体移位函数
{
uchar i;
//挪位
for (i = 0; i < len; i++)
{
*(buf + i) = (*(buf + i + 1));
}
}
uint tool_cal_crc16(uchar* buf, uchar len)
{
uchar crc_h = 0xFF; //crc 校验高8位
uchar crc_l = 0xFF; //crc 校验低8位
uchar index; // CRC索引
if (len == 0)
{
return 0;
}
while (len--)
{
index = crc_l ^ (*buf++) ;
crc_l = crc_h ^ tool_crc_htalbe[index];
crc_h = tool_crc_ltalbe[index] ;
}
return ((crc_h << 8) | crc_l) ;
}
int main () {
uchar buf[] = {0xFE, 0x5C, 0x02, 0x04, 0x6F, 0x6E, 0xAD, 0xAC};
printf("crc: %x.",tool_cal_crc16(&buf[4], 2));
return 0;
}