An idiomatic C++ client library for theConfidential Computing API, a service to create challenges and verify attestation responses.
While this library isGA, please note that the Google Cloud C++ client libraries donotfollowSemantic Versioning.
Quickstart
The following shows the code that you'll run in thegoogle/cloud/confidentialcomputing/quickstart/directory, which should give you a taste of the Confidential Computing 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 details the C++ client library for the Confidential Computing API, which is a service used to create challenges and verify attestation responses.\u003c/p\u003e\n"],["\u003cp\u003eThe latest release candidate version is 2.37.0-rc, and the library also includes versions ranging from 2.11.0 to 2.36.0.\u003c/p\u003e\n"],["\u003cp\u003eThe primary class of the library is \u003ccode\u003econfidentialcomputing_v1::ConfidentialComputingClient\u003c/code\u003e, and all RPCs are available as member functions within this class.\u003c/p\u003e\n"],["\u003cp\u003eAlthough the library is GA, it does not adhere to Semantic Versioning, and the page also provides links to instructions on error handling, overriding the endpoint and authentication, and modifying retry policies, along with some other configuration options.\u003c/p\u003e\n"],["\u003cp\u003eThe provided quickstart section includes example code demonstrating the usage of the Confidential Computing API C++ client library with the relevant include statements.\u003c/p\u003e\n"]]],[],null,["Version 2.14.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/confidentialcomputing/latest)\n- [2.41.0](/cpp/docs/reference/confidentialcomputing/2.41.0)\n- [2.40.0](/cpp/docs/reference/confidentialcomputing/2.40.0)\n- [2.39.0](/cpp/docs/reference/confidentialcomputing/2.39.0)\n- [2.38.0](/cpp/docs/reference/confidentialcomputing/2.38.0)\n- [2.37.0](/cpp/docs/reference/confidentialcomputing/2.37.0)\n- [2.36.0](/cpp/docs/reference/confidentialcomputing/2.36.0)\n- [2.35.0](/cpp/docs/reference/confidentialcomputing/2.35.0)\n- [2.34.0](/cpp/docs/reference/confidentialcomputing/2.34.0)\n- [2.33.0](/cpp/docs/reference/confidentialcomputing/2.33.0)\n- [2.32.0](/cpp/docs/reference/confidentialcomputing/2.32.0)\n- [2.31.0](/cpp/docs/reference/confidentialcomputing/2.31.0)\n- [2.30.0](/cpp/docs/reference/confidentialcomputing/2.30.0)\n- [2.29.0](/cpp/docs/reference/confidentialcomputing/2.29.0)\n- [2.28.0](/cpp/docs/reference/confidentialcomputing/2.28.0)\n- [2.27.0](/cpp/docs/reference/confidentialcomputing/2.27.0)\n- [2.26.0](/cpp/docs/reference/confidentialcomputing/2.26.0)\n- [2.25.1](/cpp/docs/reference/confidentialcomputing/2.25.1)\n- [2.24.0](/cpp/docs/reference/confidentialcomputing/2.24.0)\n- [2.23.0](/cpp/docs/reference/confidentialcomputing/2.23.0)\n- [2.22.1](/cpp/docs/reference/confidentialcomputing/2.22.1)\n- [2.21.0](/cpp/docs/reference/confidentialcomputing/2.21.0)\n- [2.20.0](/cpp/docs/reference/confidentialcomputing/2.20.0)\n- [2.19.0](/cpp/docs/reference/confidentialcomputing/2.19.0)\n- [2.18.0](/cpp/docs/reference/confidentialcomputing/2.18.0)\n- [2.17.0](/cpp/docs/reference/confidentialcomputing/2.17.0)\n- [2.16.0](/cpp/docs/reference/confidentialcomputing/2.16.0)\n- [2.15.1](/cpp/docs/reference/confidentialcomputing/2.15.1)\n- [2.14.0](/cpp/docs/reference/confidentialcomputing/2.14.0)\n- [2.13.0](/cpp/docs/reference/confidentialcomputing/2.13.0)\n- [2.12.0](/cpp/docs/reference/confidentialcomputing/2.12.0)\n- [2.11.0](/cpp/docs/reference/confidentialcomputing/2.11.0) \n\nConfidential Computing API C++ Client Library\n=============================================\n\nAn idiomatic C++ client library for the [Confidential Computing API](https://cloud.google.com/confidential-computing), a service to create challenges and verify attestation responses.\n\nWhile this library is **GA** , please note that the 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/confidentialcomputing/quickstart/` directory, which should give you a taste of the Confidential Computing API C++ client library API. \n\n #include \"google/cloud/confidentialcomputing/v1/confidential_computing_client.h\"\n #include \"google/cloud/project.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 namespace confidentialcomputing = ::google::cloud::confidentialcomputing_v1;\n auto client = confidentialcomputing::ConfidentialComputingClient(\n confidentialcomputing::MakeConfidentialComputingConnection());\n\n // auto const project = google::cloud::Project(argv[1]);\n auto const parent =\n std::string{\"projects/\"} + argv[1] + \"/locations/\" + argv[2];\n auto result = client.CreateChallenge(parent, {});\n if (!result) throw std::move(result).status();\n std::cout \u003c\u003c result-\u003eDebugString() \u003c\u003c \"\\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 [`confidentialcomputing_v1::ConfidentialComputingClient`](/cpp/docs/reference/confidentialcomputing/2.14.0/classgoogle_1_1cloud_1_1confidentialcomputing__v1_1_1ConfidentialComputingClient). All RPCs are exposed as member functions of this class. Other classes provide helpers, configuration parameters, and infrastructure to mock [`confidentialcomputing_v1::ConfidentialComputingClient`](/cpp/docs/reference/confidentialcomputing/2.14.0/classgoogle_1_1cloud_1_1confidentialcomputing__v1_1_1ConfidentialComputingClient) 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/confidentialcomputing/2.14.0/confidentialcomputing-override-endpoint) - describes how to override the default endpoint.\n- [How to Override the Authentication Credentials](/cpp/docs/reference/confidentialcomputing/2.14.0/confidentialcomputing-override-authentication) - describes how to change the authentication credentials used by the library.\n- [Override Retry, Backoff, and Idempotency Policies](/cpp/docs/reference/confidentialcomputing/2.14.0/confidentialcomputing-override-retry) - describes how to change the default retry policies.\n- [Environment Variables](/cpp/docs/reference/confidentialcomputing/2.14.0/confidentialcomputing-env) - describes environment variables that can configure the behavior of the library."]]