int _write(int file, char *ptr, int len) { int i = 0; for (i = 0; i < len; i++) ITM_SendChar((*ptr++)); return len;}uint8_t private[32] = { 0 };uint8_t public[64] = { 0 };using uECC_make_key generate public and private keysprintf(public[0]); /* warn...