Unless otherwise configured, the client libraries use Application Default Credentials to authenticate with Google Cloud Services. While this works for most applications, in some cases you may need to override this default. You can do so by providing the UnifiedCredentialsOption The following example shows how to explicitly load a service account key file:
[](std::string const& keyfile) {
auto is = std::ifstream(keyfile);
is.exceptions(std::ios::badbit); // Minimal error handling in examples
auto contents = std::string(std::istreambuf_iterator<char>(is.rdbuf()), {});
auto options =
google::cloud::Options{}.set<google::cloud::UnifiedCredentialsOption>(
google::cloud::MakeServiceAccountCredentials(contents));
return google::cloud::securitycenter_v1::SecurityCenterClient(
google::cloud::securitycenter_v1::MakeSecurityCenterConnection(
options));
}
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-21 UTC."],[[["The latest release candidate version for this content is 2.37.0-rc, with several other versions available, ranging down to 2.11.0."],["Client libraries utilize Application Default Credentials for authentication with Google Cloud Services unless configured otherwise."],["You can override the default authentication by providing a `UnifiedCredentialsOption`, such as loading a service account key file, as demonstrated in the provided code example."],["The example highlights a method for overriding authentication by loading a service account key file, but it's crucial to review best practices for service account key management."],["For more information on the factory functions that create `google::cloud::Credentials` objects, you can check out the Authentication Components page."]]],[]]