Create a root Certificate Authority

Create a root Certificate Authority under a CA pool.

Documentation pages that include this code sample

To view the code sample used in context, see the following documentation:

Code sample

Java


import com.google.api.core.ApiFuture;
import com.google.cloud.security.privateca.v1.CaPoolName;
import com.google.cloud.security.privateca.v1.CertificateAuthority;
import com.google.cloud.security.privateca.v1.CertificateAuthority.KeyVersionSpec;
import com.google.cloud.security.privateca.v1.CertificateAuthority.SignHashAlgorithm;
import com.google.cloud.security.privateca.v1.CertificateAuthorityServiceClient;
import com.google.cloud.security.privateca.v1.CertificateConfig;
import com.google.cloud.security.privateca.v1.CertificateConfig.SubjectConfig;
import com.google.cloud.security.privateca.v1.CreateCertificateAuthorityRequest;
import com.google.cloud.security.privateca.v1.KeyUsage;
import com.google.cloud.security.privateca.v1.KeyUsage.KeyUsageOptions;
import com.google.cloud.security.privateca.v1.Subject;
import com.google.cloud.security.privateca.v1.X509Parameters;
import com.google.cloud.security.privateca.v1.X509Parameters.CaOptions;
import com.google.longrunning.Operation;
import com.google.protobuf.Duration;
import java.io.IOException;
import java.util.concurrent.ExecutionException;

public class CreateCertificateAuthority {

  public static void main(String[] args)
      throws InterruptedException, ExecutionException, IOException {
    // TODO(developer): Replace these variables before running the sample.
    // location: For a list of locations, see:
    // https://cloud.google.com/certificate-authority-service/docs/locations
    // pool_Id: Set it to the CA Pool under which the CA should be created.
    // certificateAuthorityName: Unique name for the CA.
    String project = "your-project-id";
    String location = "ca-location";
    String pool_Id = "ca-pool-id";
    String certificateAuthorityName = "certificate-authority-name";
    createCertificateAuthority(project, location, pool_Id, certificateAuthorityName);
  }

  // Create Certificate Authority which is the root CA in the given CA Pool.
  public static void createCertificateAuthority(
      String project, String location, String pool_Id, String certificateAuthorityName)
      throws InterruptedException, ExecutionException, IOException {
    // Initialize client that will be used to send requests. This client only needs to be created
    // once, and can be reused for multiple requests. After completing all of your requests, call
    // the `certificateAuthorityServiceClient.close()` method on the client to safely
    // clean up any remaining background resources.
    try (CertificateAuthorityServiceClient certificateAuthorityServiceClient =
        CertificateAuthorityServiceClient.create()) {

      String commonName = "common-name";
      String orgName = "org-name";
      int caDuration = 100000; // Validity of this CA in seconds.

      // Set the type of Algorithm.
      KeyVersionSpec keyVersionSpec =
          KeyVersionSpec.newBuilder().setAlgorithm(SignHashAlgorithm.RSA_PKCS1_4096_SHA256).build();

      // Set CA subject config.
      SubjectConfig subjectConfig =
          SubjectConfig.newBuilder()
              .setSubject(
                  Subject.newBuilder().setCommonName(commonName).setOrganization(orgName).build())
              .build();

      //  Set the key usage options for X.509 fields.
      X509Parameters x509Parameters =
          X509Parameters.newBuilder()
              .setKeyUsage(
                  KeyUsage.newBuilder()
                      .setBaseKeyUsage(
                          KeyUsageOptions.newBuilder().setCrlSign(true).setCertSign(true).build())
                      .build())
              .setCaOptions(CaOptions.newBuilder().setIsCa(true).build())
              .build();

      // Set certificate authority settings.
      CertificateAuthority certificateAuthority =
          CertificateAuthority.newBuilder()
              // CertificateAuthority.Type.SELF_SIGNED denotes that this CA is a root CA.
              .setType(CertificateAuthority.Type.SELF_SIGNED)
              .setKeySpec(keyVersionSpec)
              .setConfig(
                  CertificateConfig.newBuilder()
                      .setSubjectConfig(subjectConfig)
                      .setX509Config(x509Parameters)
                      .build())
              // Set the CA validity duration.
              .setLifetime(Duration.newBuilder().setSeconds(caDuration).build())
              .build();

      // Create the CertificateAuthorityRequest.
      CreateCertificateAuthorityRequest certificateAuthorityRequest =
          CreateCertificateAuthorityRequest.newBuilder()
              .setParent(CaPoolName.of(project, location, pool_Id).toString())
              .setCertificateAuthorityId(certificateAuthorityName)
              .setCertificateAuthority(certificateAuthority)
              .build();

      // Create Certificate Authority.
      ApiFuture<Operation> futureCall =
          certificateAuthorityServiceClient
              .createCertificateAuthorityCallable()
              .futureCall(certificateAuthorityRequest);
      Operation response = futureCall.get();

      if (response.hasError()) {
        System.out.println("Error while creating CA !" + response.getError());
        return;
      }

      System.out.println(
          "Certificate Authority created successfully : " + certificateAuthorityName);
    }
  }
}

Python

import google.cloud.security.privateca_v1 as privateca_v1
from google.protobuf import duration_pb2


def create_certificate_authority(
    project_id: str,
    location: str,
    ca_pool_name: str,
    ca_name: str,
    common_name: str,
    organization: str,
    ca_duration: int,
) -> None:
    """
    Create Certificate Authority which is the root CA in the given CA Pool. This CA will be
    responsible for signing certificates within this pool.

    Args:
        project_id: project ID or project number of the Cloud project you want to use.
        location: location you want to use. For a list of locations, see: https://cloud.google.com/certificate-authority-service/docs/locations.
        ca_pool_name: set it to the CA Pool under which the CA should be created.
        ca_name: unique name for the CA.
        common_name: a title for your certificate authority.
        organization: the name of your company for your certificate authority.
        ca_duration: the validity of the certificate authority in seconds.
    """

    caServiceClient = privateca_v1.CertificateAuthorityServiceClient()

    # Set the types of Algorithm used to create a cloud KMS key.
    key_version_spec = privateca_v1.CertificateAuthority.KeyVersionSpec(
        algorithm=privateca_v1.CertificateAuthority.SignHashAlgorithm.RSA_PKCS1_4096_SHA256
    )

    # Set CA subject config.
    subject_config = privateca_v1.CertificateConfig.SubjectConfig(
        subject=privateca_v1.Subject(common_name=common_name, organization=organization)
    )

    # Set the key usage options for X.509 fields.
    x509_parameters = privateca_v1.X509Parameters(
        key_usage=privateca_v1.KeyUsage(
            base_key_usage=privateca_v1.KeyUsage.KeyUsageOptions(
                crl_sign=True, cert_sign=True,
            )
        ),
        ca_options=privateca_v1.X509Parameters.CaOptions(is_ca=True,),
    )

    # Set certificate authority settings.
    certificate_authority = privateca_v1.CertificateAuthority(
        # CertificateAuthority.Type.SELF_SIGNED denotes that this CA is a root CA.
        type_=privateca_v1.CertificateAuthority.Type.SELF_SIGNED,
        key_spec=key_version_spec,
        config=privateca_v1.CertificateConfig(
            subject_config=subject_config, x509_config=x509_parameters,
        ),
        lifetime=duration_pb2.Duration(seconds=ca_duration),
    )

    ca_pool_path = caServiceClient.ca_pool_path(project_id, location, ca_pool_name)

    # Create the CertificateAuthorityRequest.
    request = privateca_v1.CreateCertificateAuthorityRequest(
        parent=ca_pool_path,
        certificate_authority_id=ca_name,
        certificate_authority=certificate_authority,
    )

    operation = caServiceClient.create_certificate_authority(request=request)
    result = operation.result()

    print("Operation result:", result)

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