Create a service account key

Demonstrates creating a service account key.

Documentation pages that include this code sample

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

Code sample

C#

To learn how to install and use the client library for IAM, see IAM client libraries. For more information, see the IAM C# API reference documentation.


using System;
using Google.Apis.Auth.OAuth2;
using Google.Apis.Iam.v1;
using Google.Apis.Iam.v1.Data;

public partial class ServiceAccountKeys
{
    public static ServiceAccountKey CreateKey(string serviceAccountEmail)
    {
        var credential = GoogleCredential.GetApplicationDefault()
            .CreateScoped(IamService.Scope.CloudPlatform);
        var service = new IamService(new IamService.Initializer
        {
            HttpClientInitializer = credential
        });

        var key = service.Projects.ServiceAccounts.Keys.Create(
            new CreateServiceAccountKeyRequest(),
            "projects/-/serviceAccounts/" + serviceAccountEmail)
            .Execute();
        Console.WriteLine("Created key: " + key.Name);
        return key;
    }
}

C++

To learn how to install and use the client library for IAM, see IAM client libraries. For more information, see the IAM C++ API reference documentation.

namespace iam = ::google::cloud::iam;
return [](std::string const& name) {
  iam::IAMClient client(iam::MakeIAMConnection());
  auto response = client.CreateServiceAccountKey(
      name,
      google::iam::admin::v1::ServiceAccountPrivateKeyType::
          TYPE_GOOGLE_CREDENTIALS_FILE,
      google::iam::admin::v1::ServiceAccountKeyAlgorithm::KEY_ALG_RSA_2048);
  if (!response) throw std::runtime_error(response.status().message());
  std::cout << "ServiceAccountKey successfully created: "
            << response->DebugString() << "\n";
  return response->name();
}

Go

To learn how to install and use the client library for IAM, see IAM client libraries. For more information, see the IAM Go API reference documentation.

import (
	"context"
	"fmt"
	"io"

	iam "google.golang.org/api/iam/v1"
)

// createKey creates a service account key.
func createKey(w io.Writer, serviceAccountEmail string) (*iam.ServiceAccountKey, error) {
	ctx := context.Background()
	service, err := iam.NewService(ctx)
	if err != nil {
		return nil, fmt.Errorf("iam.NewService: %v", err)
	}

	resource := "projects/-/serviceAccounts/" + serviceAccountEmail
	request := &iam.CreateServiceAccountKeyRequest{}
	key, err := service.Projects.ServiceAccounts.Keys.Create(resource, request).Do()
	if err != nil {
		return nil, fmt.Errorf("Projects.ServiceAccounts.Keys.Create: %v", err)
	}
	fmt.Fprintf(w, "Created key: %v", key.Name)
	return key, nil
}

Java

To learn how to install and use the client library for IAM, see IAM client libraries. For more information, see the IAM Java API reference documentation.

import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.iam.v1.Iam;
import com.google.api.services.iam.v1.IamScopes;
import com.google.api.services.iam.v1.model.CreateServiceAccountKeyRequest;
import com.google.api.services.iam.v1.model.ServiceAccountKey;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.Collections;

public class CreateServiceAccountKey {

  // Creates a key for a service account.
  public static void createKey(String projectId, String serviceAccountName) {
    // String projectId = "my-project-id";
    // String serviceAccountName = "my-service-account-name";

    Iam service = null;
    try {
      service = initService();
    } catch (IOException | GeneralSecurityException e) {
      System.out.println("Unable to initialize service: \n" + e.toString());
      return;
    }

    String serviceAccountEmail = serviceAccountName + "@" + projectId + ".iam.gserviceaccount.com";
    try {
      ServiceAccountKey key =
          service
              .projects()
              .serviceAccounts()
              .keys()
              .create(
                  "projects/-/serviceAccounts/" + serviceAccountEmail,
                  new CreateServiceAccountKeyRequest())
              .execute();

      System.out.println("Created key: " + key.getName());
    } catch (IOException e) {
      System.out.println("Unable to create service account key: \n" + e.toString());
    }
  }

  private static Iam initService() throws GeneralSecurityException, IOException {
    // Use the Application Default Credentials strategy for authentication. For more info, see:
    // https://cloud.google.com/docs/authentication/production#finding_credentials_automatically
    GoogleCredentials credential =
        GoogleCredentials.getApplicationDefault()
            .createScoped(Collections.singleton(IamScopes.CLOUD_PLATFORM));
    // Initialize the IAM service, which can be used to send requests to the IAM API.
    Iam service =
        new Iam.Builder(
                GoogleNetHttpTransport.newTrustedTransport(),
                JacksonFactory.getDefaultInstance(),
                new HttpCredentialsAdapter(credential))
            .setApplicationName("service-account-keys")
            .build();
    return service;
  }
}

Python

To learn how to install and use the client library for IAM, see IAM client libraries. For more information, see the IAM Python API reference documentation.

import os

from google.oauth2 import service_account
import googleapiclient.discovery

def create_key(service_account_email):
    """Creates a key for a service account."""

    credentials = service_account.Credentials.from_service_account_file(
        filename=os.environ['GOOGLE_APPLICATION_CREDENTIALS'],
        scopes=['https://www.googleapis.com/auth/cloud-platform'])

    service = googleapiclient.discovery.build(
        'iam', 'v1', credentials=credentials)

    key = service.projects().serviceAccounts().keys().create(
        name='projects/-/serviceAccounts/' + service_account_email, body={}
        ).execute()

    print('Created key: ' + key['name'])

What's next

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