An idiomatic C++ client library for theCertificate Authority API. The Certificate Authority Service API is a highly-available, scalable service that enables you to simplify and automate the management of private certificate authorities (CAs) while staying in control of your private keys.
While this library isGA, please note Google Cloud C++ client libraries donotfollowSemantic Versioning.
Quickstart
The following shows the code that you'll run in thegoogle/cloud/privateca/quickstart/directory, which should give you a taste of the Certificate Authority API C++ client library API.
[[["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 2025-09-04 UTC."],[[["\u003cp\u003eThis webpage provides documentation for the Certificate Authority API C++ client library, which is currently at version 2.32.0, but offers access to a range of versions from 2.11.0 to the latest release candidate 2.37.0-rc.\u003c/p\u003e\n"],["\u003cp\u003eThe Certificate Authority Service API simplifies the management of private certificate authorities, allowing for the automation and scalability while retaining control over private keys.\u003c/p\u003e\n"],["\u003cp\u003eThe primary class in this library is \u003ccode\u003eprivateca_v1::CertificateAuthorityServiceClient\u003c/code\u003e, which encompasses all Remote Procedure Calls (RPCs) and it offers helpers, configuration options, and testing tools.\u003c/p\u003e\n"],["\u003cp\u003eThe library is generally available (GA), but does not follow semantic versioning, and the webpage contains information on error handling, overriding default settings such as the endpoint and credentials, as well as retry policies and environment variables.\u003c/p\u003e\n"],["\u003cp\u003eThe webpage includes a quickstart guide with a sample code that illustrates how to list CA pools using the C++ library.\u003c/p\u003e\n"]]],[],null,["Version 2.32.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/privateca/latest)\n- [2.41.0](/cpp/docs/reference/privateca/2.41.0)\n- [2.40.0](/cpp/docs/reference/privateca/2.40.0)\n- [2.39.0](/cpp/docs/reference/privateca/2.39.0)\n- [2.38.0](/cpp/docs/reference/privateca/2.38.0)\n- [2.37.0](/cpp/docs/reference/privateca/2.37.0)\n- [2.36.0](/cpp/docs/reference/privateca/2.36.0)\n- [2.35.0](/cpp/docs/reference/privateca/2.35.0)\n- [2.34.0](/cpp/docs/reference/privateca/2.34.0)\n- [2.33.0](/cpp/docs/reference/privateca/2.33.0)\n- [2.32.0](/cpp/docs/reference/privateca/2.32.0)\n- [2.31.0](/cpp/docs/reference/privateca/2.31.0)\n- [2.30.0](/cpp/docs/reference/privateca/2.30.0)\n- [2.29.0](/cpp/docs/reference/privateca/2.29.0)\n- [2.28.0](/cpp/docs/reference/privateca/2.28.0)\n- [2.27.0](/cpp/docs/reference/privateca/2.27.0)\n- [2.26.0](/cpp/docs/reference/privateca/2.26.0)\n- [2.25.1](/cpp/docs/reference/privateca/2.25.1)\n- [2.24.0](/cpp/docs/reference/privateca/2.24.0)\n- [2.23.0](/cpp/docs/reference/privateca/2.23.0)\n- [2.22.1](/cpp/docs/reference/privateca/2.22.1)\n- [2.21.0](/cpp/docs/reference/privateca/2.21.0)\n- [2.20.0](/cpp/docs/reference/privateca/2.20.0)\n- [2.19.0](/cpp/docs/reference/privateca/2.19.0)\n- [2.18.0](/cpp/docs/reference/privateca/2.18.0)\n- [2.17.0](/cpp/docs/reference/privateca/2.17.0)\n- [2.16.0](/cpp/docs/reference/privateca/2.16.0)\n- [2.15.1](/cpp/docs/reference/privateca/2.15.1)\n- [2.14.0](/cpp/docs/reference/privateca/2.14.0)\n- [2.13.0](/cpp/docs/reference/privateca/2.13.0)\n- [2.12.0](/cpp/docs/reference/privateca/2.12.0)\n- [2.11.0](/cpp/docs/reference/privateca/2.11.0) \n\nCertificate Authority API C++ Client Library\n============================================\n\nAn idiomatic C++ client library for the [Certificate Authority API](https://cloud.google.com/certificate-authority-service/docs). The Certificate Authority Service API is a highly-available, scalable service that enables you to simplify and automate the management of private certificate authorities (CAs) while staying in control of your private keys.\n\nWhile this library is **GA** , please note Google Cloud C++ client libraries do **not** follow [Semantic Versioning](https://semver.org/).\n\n### Quickstart\n\nThe following shows the code that you'll run in the `google/cloud/privateca/quickstart/` directory, which should give you a taste of the Certificate Authority API C++ client library API. \n\n #include \"google/cloud/privateca/v1/certificate_authority_client.h\"\n #include \"google/cloud/location.h\"\n #include \u003ciostream\u003e\n\n int main(int argc, char* argv[]) try {\n if (argc != 3) {\n std::cerr \u003c\u003c \"Usage: \" \u003c\u003c argv[0] \u003c\u003c \" project-id location-id\\n\";\n return 1;\n }\n\n auto const location = google::cloud::Location(argv[1], argv[2]);\n\n namespace privateca = ::google::cloud::privateca_v1;\n auto client = privateca::CertificateAuthorityServiceClient(\n privateca::MakeCertificateAuthorityServiceConnection());\n\n for (auto ca_pool : client.ListCaPools(location.FullName())) {\n if (!ca_pool) throw std::move(ca_pool).status();\n std::cout \u003c\u003c ca_pool-\u003eDebugString() \u003c\u003c \"\\n\";\n }\n\n return 0;\n } catch (google::cloud::Status const& status) {\n std::cerr \u003c\u003c \"google::cloud::Status thrown: \" \u003c\u003c status \u003c\u003c \"\\n\";\n return 1;\n }\n\n### Main classes\n\nThe main class in this library is [`privateca_v1::CertificateAuthorityServiceClient`](/cpp/docs/reference/privateca/2.32.0/classgoogle_1_1cloud_1_1privateca__v1_1_1CertificateAuthorityServiceClient). All RPCs are exposed as member functions of this class. Other classes provide helpers, configuration parameters, and infrastructure to mock [`privateca_v1::CertificateAuthorityServiceClient`](/cpp/docs/reference/privateca/2.32.0/classgoogle_1_1cloud_1_1privateca__v1_1_1CertificateAuthorityServiceClient) when testing your application.\n\n### More Information\n\n- [Error Handling](https://cloud.google.com/cpp/docs/reference/common/latest/common-error-handling.html) - describes how the library reports errors.\n- [How to Override the Default Endpoint](/cpp/docs/reference/privateca/2.32.0/privateca-override-endpoint) - describes how to override the default endpoint.\n- [How to Override the Authentication Credentials](/cpp/docs/reference/privateca/2.32.0/privateca-override-authentication) - describes how to change the authentication credentials used by the library.\n- [Override Retry, Backoff, and Idempotency Policies](/cpp/docs/reference/privateca/2.32.0/privateca-override-retry) - describes how to change the default retry policies.\n- [Environment Variables](/cpp/docs/reference/privateca/2.32.0/privateca-env) - describes environment variables that can configure the behavior of the library."]]