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::recaptchaenterprise_v1::
RecaptchaEnterpriseServiceClient(
google::cloud::recaptchaenterprise_v1::
MakeRecaptchaEnterpriseServiceConnection(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 webpage lists the available versions of the reCAPTCHA Enterprise C++ client library, ranging from version 2.12.0 to the latest release candidate 2.37.0-rc."],["The client libraries primarily use Application Default Credentials for Google Cloud Services authentication, but this can be overridden when needed."],["You can override the default authentication by providing a UnifiedCredentialsOption, such as loading a service account key file, as shown in the example code."],["The example code demonstrates a simple method to override authentication by loading service account credentials, and it is recommended to reference the best practices guide for managing these keys."],["For further details on creating `google::cloud::Credentials` objects, you can refer to the Authentication Components section."]]],[]]
