while (fgets(buffer, BUF_SIZE, in_file) != NULL) {
written = fwrite(buffer, 1, strlen(buffer), out_file);
hash->Add((unsigned char*)buffer, written);
while (fgets(buffer, BUF_SIZE, in_file) != NULL) {
written = fwrite(buffer, 1, strlen(buffer), out_file);
hash->Add((unsigned char*)buffer, written);