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::confidentialcomputing_v1::ConfidentialComputingClient(
google::cloud::confidentialcomputing_v1::
MakeConfidentialComputingConnection(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 2025-04-17 UTC."],[[["The latest version of the confidential computing documentation is 2.37.0-rc, and a list of previous versions, ranging down to 2.11.0, is available for reference."],["The client libraries default to using Application Default Credentials for authentication with Google Cloud Services, but this can be overridden when necessary."],["You can override the default authentication by utilizing `UnifiedCredentialsOption` and loading a service account key file, as demonstrated in the provided code example."],["For detailed guidance on managing service account keys and further details, refer to the \"Best practices for managing service account keys\" documentation."],["More information on creating `google::cloud::Credentials` objects can be found in the Authentication Components documentation."]]],[]]
