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 2025-03-14 UTC."],[[["This page provides documentation for various versions of the Confidential Computing C++ client library, ranging from version 2.11.0 to 2.37.0-rc, including links to specific version documentation for overriding authentication."],["The latest release candidate version available is 2.37.0-rc for Confidential Computing."],["The default authentication mechanism for client libraries uses Application Default Credentials, but it can be overridden by implementing the UnifiedCredentialsOption, as shown in the provided example."],["The example code demonstrates how to load credentials from a service account key file, which will create a ConfidentialComputingClient."],["Additional information on managing service account keys and authentication components can be found via links provided, where it details the best practices and factory functions for creating credential objects, respectively."]]],[]]
