Hello on MacOS, I use following codes to get the sign of an application char app_path[PATH_MAX+1] = {0}; uint32_t size = sizeof(app_path); int ret = _NSGetExecutablePath(app_path, &size); if (ret) return -1; NSString *app_path_str = [[NSString alloc] initWithUTF8String: app_path]; NSURL* url = [NSURL URLWithString:app_path_str]; CFURLRef path = (__bridge CFURLRef)url; SecStaticCodeRef static_code; OSStatus status = SecStaticCodeCreateWithPath(path, kSecCSDefaultFlags, &static_code); and find when the path includes a space char( for example: "/Users/username/Downloads/test A/test.dmg") SecStaticCodeCreateWithPath will always return -4960（errSecCoreFoundationUnknown？） and it works well when the path doesn't contain space, could anyone give some help? thanks very much