x2i
auth->auth_data[i] = x2i(hexkey + 2 * i);
uint8_t x2i(unsigned char *);
key->data[i] = x2i(hexkey + 2 * i);
u_int8_t x2i(unsigned char *);
yylval.hex.data[i] = x2i(p + 2 * i);
unsigned char x2i(unsigned char *);