创建对称密钥

本页面介绍如何创建用于加密的对称密钥。

您还可以创建非对称密钥、Cloud HSM 密钥或 Cloud External Key Manager 密钥。

概览

创建密钥时，您将其添加到给定 Google Cloud 位置中的密钥环。您可以创建新的密钥环，也可以使用现有的密钥环。在本主题中，您将创建一个新的密钥环，并向其添加新密钥。

创建密钥环

请按照以下步骤为新密钥创建密钥环。如果希望改用现有密钥环，则可以创建密钥。

网页界面

  1. 转到 Cloud Console 中的加密密钥页面。

    转到“加密密钥”页面

  2. 点击创建密钥环。

  3. 在密钥环名称字段中，输入所需的密钥环名称。

  4. 在密钥环位置下拉列表中，选择一个位置，例如 "us-east1"。

  5. 点击创建。

命令行

要在命令行上使用 Cloud KMS，请先安装或升级到最新版本的 Cloud SDK。

gcloud kms keyrings create key-ring \
    --location location

将 key-ring 替换为密钥环的名称。将 location 替换为密钥环及其密钥的 Cloud KMS 位置。

如需了解所有标志和可能值，请使用 --help 标志运行命令。

C#

要运行此代码，请先设置 C# 开发环境并安装 Cloud KMS C# SDK。


using Google.Api.Gax.ResourceNames;
using Google.Cloud.Kms.V1;

public class CreateKeyRingSample
{
    public KeyRing CreateKeyRing(
      string projectId = "my-project", string locationId = "us-east1",
      string id = "my-key-ring")
    {
        // Create the client.
        KeyManagementServiceClient client = KeyManagementServiceClient.Create();

        // Build the parent location name.
        LocationName locationName = new LocationName(projectId, locationId);

        // Build the key ring.
        KeyRing keyRing = new KeyRing { };

        // Call the API.
        KeyRing result = client.CreateKeyRing(locationName, id, keyRing);

        // Return the result.
        return result;
    }
}

Go

要运行此代码，请先设置 Go 开发环境并安装 Cloud KMS Go SDK。

import (
	"context"
	"fmt"
	"io"

	kms "cloud.google.com/go/kms/apiv1"
	kmspb "google.golang.org/genproto/googleapis/cloud/kms/v1"
)

// createKeyRing creates a new ring to store keys on KMS.
func createKeyRing(w io.Writer, parent, id string) error {
	// parent := "projects/PROJECT_ID/locations/global"
	// id := "my-key-ring"

	// Create the client.
	ctx := context.Background()
	client, err := kms.NewKeyManagementClient(ctx)
	if err != nil {
		return fmt.Errorf("failed to create kms client: %v", err)
	}

	// Build the request.
	req := &kmspb.CreateKeyRingRequest{
		Parent:    parent,
		KeyRingId: id,
	}

	// Call the API.
	result, err := client.CreateKeyRing(ctx, req)
	if err != nil {
		return fmt.Errorf("failed to create key ring: %v", err)
	}
	fmt.Fprintf(w, "Created key ring: %s\n", result.Name)
	return nil
}

Java

要运行此代码，请先设置 Java 开发环境并安装 Cloud KMS Java SDK。

import com.google.cloud.kms.v1.KeyManagementServiceClient;
import com.google.cloud.kms.v1.KeyRing;
import com.google.cloud.kms.v1.LocationName;
import java.io.IOException;

public class CreateKeyRing {

  public void createKeyRing() throws IOException {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "your-project-id";
    String locationId = "us-east1";
    String id = "my-asymmetric-signing-key";
    createKeyRing(projectId, locationId, id);
  }

  // Create a new key ring.
  public void createKeyRing(String projectId, String locationId, String id) throws 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 "close" method on the client to
    // safely clean up any remaining background resources.
    try (KeyManagementServiceClient client = KeyManagementServiceClient.create()) {
      // Build the parent name from the project and location.
      LocationName locationName = LocationName.of(projectId, locationId);

      // Build the key ring to create.
      KeyRing keyRing = KeyRing.newBuilder().build();

      // Create the key ring.
      KeyRing createdKeyRing = client.createKeyRing(locationName, id, keyRing);
      System.out.printf("Created key ring %s%n", createdKeyRing.getName());
    }
  }
}

Node.js

要运行此代码，请先设置 Node.js 开发环境并安装 Cloud KMS Node.js SDK。

//
// TODO(developer): Uncomment these variables before running the sample.
//
// const projectId = 'my-project';
// const locationId = 'us-east1';
// const id = 'my-key-ring';

// Imports the Cloud KMS library
const {KeyManagementServiceClient} = require('@google-cloud/kms');

// Instantiates a client
const client = new KeyManagementServiceClient();

// Build the parent location name
const locationName = client.locationPath(projectId, locationId);

async function createKeyRing() {
  const [keyRing] = await client.createKeyRing({
    parent: locationName,
    keyRingId: id,
  });

  console.log(`Created key ring: ${keyRing.name}`);
  return keyRing;
}

return createKeyRing();

PHP

要运行此代码，请先了解如何在 Google Cloud 上使用 PHP 并安装 Cloud KMS PHP SDK。

use Google\Cloud\Kms\V1\KeyManagementServiceClient;
use Google\Cloud\Kms\V1\KeyRing;

function create_key_ring_sample(
    string $projectId = 'my-project',
    string $locationId = 'us-east1',
    string $id = 'my-key-ring'
) {
    // Create the Cloud KMS client.
    $client = new KeyManagementServiceClient();

    // Build the parent location name.
    $locationName = $client->locationName($projectId, $locationId);

    // Build the key ring.
    $keyRing = new KeyRing();

    // Call the API.
    $createdKeyRing = $client->createKeyRing($locationName, $id, $keyRing);
    printf('Created key ring: %s' . PHP_EOL, $createdKeyRing->getName());
    return $createdKeyRing;
}

Python

要运行此代码，请先设置 Python 开发环境并安装 Cloud KMS Python SDK。

def create_key_ring(project_id, location_id, id):
    """
    Creates a new key ring in Cloud KMS

    Args:
        project_id (string): Google Cloud project ID (e.g. 'my-project').
        location_id (string): Cloud KMS location (e.g. 'us-east1').
        id (string): ID of the key ring to create (e.g. 'my-key-ring').

    Returns:
        KeyRing: Cloud KMS key ring.

    """

    # Import the client library.
    from google.cloud import kms

    # Create the client.
    client = kms.KeyManagementServiceClient()

    # Build the parent location name.
    location_name = f'projects/{project_id}/locations/{location_id}'

    # Build the key ring.
    key_ring = {}

    # Call the API.
    created_key_ring = client.create_key_ring(request={'parent': location_name, 'key_ring_id': id, 'key_ring': key_ring})
    print('Created key ring: {}'.format(created_key_ring.name))
    return created_key_ring

Ruby

要运行此代码，请先设置 Ruby 开发环境并安装 Cloud KMS Ruby SDK。

# TODO(developer): uncomment these values before running the sample.
# project_id  = "my-project"
# location_id = "us-east1"
# id = "my-key-ring"

# Require the library.
require "google/cloud/kms"

# Create the client.
client = Google::Cloud::Kms.key_management_service

# Build the parent location name.
location_name = client.location_path project: project_id, location: location_id

# Build the key ring.
key_ring = {}

# Call the API.
created_key_ring = client.create_key_ring parent: location_name, key_ring_id: id, key_ring: key_ring
puts "Created key ring: #{created_key_ring.name}"

API

这些示例使用 curl 作为 HTTP 客户端来演示如何使用 API。如需详细了解访问权限控制，请参阅访问 Cloud KMS API。

curl "https://cloudkms.googleapis.com/v1/projects/project-id/locations/location-id/keyRings" \
    --request "POST" \
    --header "authorization: Bearer token" \
    --header "content-type: application/json" \
    --header "x-goog-user-project: project-id" \
    --data "{\"name\": {\"key-ring-name\": {}}}"

如需了解详情，请参阅 KeyRing.create API 文档。

创建密钥

按照以下步骤在指定的密钥环和位置创建对称密钥。

网页界面

  1. 转到 Cloud Console 中的加密密钥页面。

    转到“加密密钥”页面

  2. 点击您要为其创建密钥的密钥环的名称。

  3. 点击创建密钥。

  4. 在您要创建哪种类型的密钥？中，选择生成的密钥。

  5. 在密钥名称字段中，输入密钥的名称。

  6. 点击保护级别下拉列表，然后选择软件。

  7. 点击用途下拉列表，然后选择对称加密/解密。

  8. 接受轮替周期和开始日期的默认值。

  9. 点击创建。

命令行

要在命令行上使用 Cloud KMS，请先安装或升级到最新版本的 Cloud SDK。

gcloud kms keys create key \
    --keyring key-ring \
    --location location \
    --purpose "encryption"

将 key 替换为密钥的名称。将 key-ring 替换为密钥将要存放到的密钥环的名称。将 location 替换为密钥环的 Cloud KMS 位置。

如需了解所有标志和可能值，请使用 --help 标志运行命令。

C#

要运行此代码，请先设置 C# 开发环境并安装 Cloud KMS C# SDK。


using Google.Cloud.Kms.V1;

public class CreateKeySymmetricEncryptDecryptSample
{
    public CryptoKey CreateKeySymmetricEncryptDecrypt(
      string projectId = "my-project", string locationId = "us-east1", string keyRingId = "my-key-ring",
      string id = "my-symmetric-encryption-key")
    {
        // Create the client.
        KeyManagementServiceClient client = KeyManagementServiceClient.Create();

        // Build the parent key ring name.
        KeyRingName keyRingName = new KeyRingName(projectId, locationId, keyRingId);

        // Build the key.
        CryptoKey key = new CryptoKey
        {
            Purpose = CryptoKey.Types.CryptoKeyPurpose.EncryptDecrypt,
            VersionTemplate = new CryptoKeyVersionTemplate
            {
                Algorithm = CryptoKeyVersion.Types.CryptoKeyVersionAlgorithm.GoogleSymmetricEncryption,
            }
        };

        // Call the API.
        CryptoKey result = client.CreateCryptoKey(keyRingName, id, key);

        // Return the result.
        return result;
    }
}

Go

要运行此代码，请先设置 Go 开发环境并安装 Cloud KMS Go SDK。

import (
	"context"
	"fmt"
	"io"

	kms "cloud.google.com/go/kms/apiv1"
	kmspb "google.golang.org/genproto/googleapis/cloud/kms/v1"
)

// createKeySymmetricEncryptDecrypt creates a new symmetric encrypt/decrypt key
// on Cloud KMS.
func createKeySymmetricEncryptDecrypt(w io.Writer, parent, id string) error {
	// parent := "projects/my-project/locations/us-east1/keyRings/my-key-ring"
	// id := "my-symmetric-encryption-key"

	// Create the client.
	ctx := context.Background()
	client, err := kms.NewKeyManagementClient(ctx)
	if err != nil {
		return fmt.Errorf("failed to create kms client: %v", err)
	}

	// Build the request.
	req := &kmspb.CreateCryptoKeyRequest{
		Parent:      parent,
		CryptoKeyId: id,
		CryptoKey: &kmspb.CryptoKey{
			Purpose: kmspb.CryptoKey_ENCRYPT_DECRYPT,
			VersionTemplate: &kmspb.CryptoKeyVersionTemplate{
				Algorithm: kmspb.CryptoKeyVersion_GOOGLE_SYMMETRIC_ENCRYPTION,
			},
		},
	}

	// Call the API.
	result, err := client.CreateCryptoKey(ctx, req)
	if err != nil {
		return fmt.Errorf("failed to create key: %v", err)
	}
	fmt.Fprintf(w, "Created key: %s\n", result.Name)
	return nil
}

Java

要运行此代码，请先设置 Java 开发环境并安装 Cloud KMS Java SDK。

import com.google.cloud.kms.v1.CryptoKey;
import com.google.cloud.kms.v1.CryptoKey.CryptoKeyPurpose;
import com.google.cloud.kms.v1.CryptoKeyVersion.CryptoKeyVersionAlgorithm;
import com.google.cloud.kms.v1.CryptoKeyVersionTemplate;
import com.google.cloud.kms.v1.KeyManagementServiceClient;
import com.google.cloud.kms.v1.KeyRingName;
import java.io.IOException;

public class CreateKeySymmetricEncryptDecrypt {

  public void createKeySymmetricEncryptDecrypt() throws IOException {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "your-project-id";
    String locationId = "us-east1";
    String keyRingId = "my-key-ring";
    String id = "my-key";
    createKeySymmetricEncryptDecrypt(projectId, locationId, keyRingId, id);
  }

  // Create a new key that is used for symmetric encryption and decryption.
  public void createKeySymmetricEncryptDecrypt(
      String projectId, String locationId, String keyRingId, String id) throws 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 "close" method on the client to
    // safely clean up any remaining background resources.
    try (KeyManagementServiceClient client = KeyManagementServiceClient.create()) {
      // Build the parent name from the project, location, and key ring.
      KeyRingName keyRingName = KeyRingName.of(projectId, locationId, keyRingId);

      // Build the symmetric key to create.
      CryptoKey key =
          CryptoKey.newBuilder()
              .setPurpose(CryptoKeyPurpose.ENCRYPT_DECRYPT)
              .setVersionTemplate(
                  CryptoKeyVersionTemplate.newBuilder()
                      .setAlgorithm(CryptoKeyVersionAlgorithm.GOOGLE_SYMMETRIC_ENCRYPTION))
              .build();

      // Create the key.
      CryptoKey createdKey = client.createCryptoKey(keyRingName, id, key);
      System.out.printf("Created symmetric key %s%n", createdKey.getName());
    }
  }
}

Node.js

要运行此代码，请先设置 Node.js 开发环境并安装 Cloud KMS Node.js SDK。

//
// TODO(developer): Uncomment these variables before running the sample.
//
// const projectId = 'my-project';
// const locationId = 'us-east1';
// const keyRingId = 'my-key-ring';
// const id = 'my-symmetric-encryption-key';

// Imports the Cloud KMS library
const {KeyManagementServiceClient} = require('@google-cloud/kms');

// Instantiates a client
const client = new KeyManagementServiceClient();

// Build the parent key ring name
const keyRingName = client.keyRingPath(projectId, locationId, keyRingId);

async function createKeySymmetricEncryptDecrypt() {
  const [key] = await client.createCryptoKey({
    parent: keyRingName,
    cryptoKeyId: id,
    cryptoKey: {
      purpose: 'ENCRYPT_DECRYPT',
      versionTemplate: {
        algorithm: 'GOOGLE_SYMMETRIC_ENCRYPTION',
      },
    },
  });

  console.log(`Created symmetric key: ${key.name}`);
  return key;
}

return createKeySymmetricEncryptDecrypt();

PHP

要运行此代码，请先了解如何在 Google Cloud 上使用 PHP 并安装 Cloud KMS PHP SDK。

use Google\Cloud\Kms\V1\CryptoKey;
use Google\Cloud\Kms\V1\CryptoKey\CryptoKeyPurpose;
use Google\Cloud\Kms\V1\CryptoKeyVersion\CryptoKeyVersionAlgorithm;
use Google\Cloud\Kms\V1\CryptoKeyVersionTemplate;
use Google\Cloud\Kms\V1\KeyManagementServiceClient;

function create_key_symmetric_encrypt_decrypt_sample(
    string $projectId = 'my-project',
    string $locationId = 'us-east1',
    string $keyRingId = 'my-key-ring',
    string $id = 'my-symmetric-key'
) {
    // Create the Cloud KMS client.
    $client = new KeyManagementServiceClient();

    // Build the parent key ring name.
    $keyRingName = $client->keyRingName($projectId, $locationId, $keyRingId);

    // Build the key.
    $key = (new CryptoKey())
        ->setPurpose(CryptoKeyPurpose::ENCRYPT_DECRYPT)
        ->setVersionTemplate((new CryptoKeyVersionTemplate())
            ->setAlgorithm(CryptoKeyVersionAlgorithm::GOOGLE_SYMMETRIC_ENCRYPTION)
        );

    // Call the API.
    $createdKey = $client->createCryptoKey($keyRingName, $id, $key);
    printf('Created symmetric key: %s' . PHP_EOL, $createdKey->getName());
    return $createdKey;
}

Python

要运行此代码，请先设置 Python 开发环境并安装 Cloud KMS Python SDK。

def create_key_symmetric_encrypt_decrypt(project_id, location_id, key_ring_id, id):
    """
    Creates a new symmetric encryption/decryption key in Cloud KMS.

    Args:
        project_id (string): Google Cloud project ID (e.g. 'my-project').
        location_id (string): Cloud KMS location (e.g. 'us-east1').
        key_ring_id (string): ID of the Cloud KMS key ring (e.g. 'my-key-ring').
        id (string): ID of the key to create (e.g. 'my-symmetric-key').

    Returns:
        CryptoKey: Cloud KMS key.

    """

    # Import the client library.
    from google.cloud import kms

    # Create the client.
    client = kms.KeyManagementServiceClient()

    # Build the parent key ring name.
    key_ring_name = client.key_ring_path(project_id, location_id, key_ring_id)

    # Build the key.
    purpose = kms.CryptoKey.CryptoKeyPurpose.ENCRYPT_DECRYPT
    algorithm = kms.CryptoKeyVersion.CryptoKeyVersionAlgorithm.GOOGLE_SYMMETRIC_ENCRYPTION
    key = {
        'purpose': purpose,
        'version_template': {
          'algorithm': algorithm,
        }
    }

    # Call the API.
    created_key = client.create_crypto_key(request={'parent': key_ring_name, 'crypto_key_id': id, 'crypto_key': key})
    print('Created symmetric key: {}'.format(created_key.name))
    return created_key

Ruby

要运行此代码，请先设置 Ruby 开发环境并安装 Cloud KMS Ruby SDK。

# TODO(developer): uncomment these values before running the sample.
# project_id  = "my-project"
# location_id = "us-east1"
# key_ring_id = "my-key-ring"
# id          = "my-symmetric-key"

# Require the library.
require "google/cloud/kms"

# Create the client.
client = Google::Cloud::Kms.key_management_service

# Build the parent key ring name.
key_ring_name = client.key_ring_path project: project_id, location: location_id, key_ring: key_ring_id

# Build the key.
key = {
  purpose:          :ENCRYPT_DECRYPT,
  version_template: {
    algorithm: :GOOGLE_SYMMETRIC_ENCRYPTION
  }
}

# Call the API.
created_key = client.create_crypto_key parent: key_ring_name, crypto_key_id: id, crypto_key: key
puts "Created symmetric key: #{created_key.name}"

设置密钥轮替周期和开始时间

可以使用指定的轮替周期创建密钥，该周期是两次自动生成新密钥版本的时间间隔。还可以使用指定的下次轮替时间创建密钥。

网页界面

使用 Google Cloud Console 创建密钥时，如果您未指定自己的轮替周期和下次轮替的时间，则 Cloud KMS 会自动设置该密钥的轮替周期和下次轮替的时间。

如需在创建密钥期间，但在点击创建按钮之前指定其他轮替周期和开始时间，请执行以下操作：

  1. 点击轮替周期下拉列表，然后针对轮替周期选择一个值。

  2. 在开始日期字段中点击日期，然后针对下一次轮替选择一个日期。

命令行

要在命令行上使用 Cloud KMS，请先安装或升级到最新版本的 Cloud SDK。

gcloud kms keys create key \
    --keyring key-ring \
    --location location \
    --purpose "encryption" \
    --rotation-period rotation-period \
    --next-rotation-time next-rotation-time

将 key 替换为密钥的名称。将 key-ring 替换为密钥将要存放到的现有密钥环的名称。将 location 替换为密钥环的 Cloud KMS 位置。将 rotation-period 替换为一个时间间隔，例如 30d，以每 30 天轮替一次密钥。将 next-rotation-time 替换为开始第一次轮替的时间戳，例如 "1970-01-01T01:02:03"。

如需了解所有标志和可能值，请使用 --help 标志运行命令。

C#

要运行此代码，请先设置 C# 开发环境并安装 Cloud KMS C# SDK。


using Google.Cloud.Kms.V1;
using Google.Protobuf.WellKnownTypes;
using System;

public class CreateKeyRotationScheduleSample
{
    public CryptoKey CreateKeyRotationSchedule(
      string projectId = "my-project", string locationId = "us-east1", string keyRingId = "my-key-ring",
      string id = "my-key-with-rotation-schedule")
    {
        // Create the client.
        KeyManagementServiceClient client = KeyManagementServiceClient.Create();

        // Build the parent key ring name.
        KeyRingName keyRingName = new KeyRingName(projectId, locationId, keyRingId);

        // Build the key.
        CryptoKey key = new CryptoKey
        {
            Purpose = CryptoKey.Types.CryptoKeyPurpose.EncryptDecrypt,
            VersionTemplate = new CryptoKeyVersionTemplate
            {
                Algorithm = CryptoKeyVersion.Types.CryptoKeyVersionAlgorithm.GoogleSymmetricEncryption,
            },

            // Rotate the key every 30 days.
            RotationPeriod = new Duration
            {
                Seconds = 60 * 60 * 24 * 30, // 30 days
            },

            // Start the first rotation in 24 hours.
            NextRotationTime = new Timestamp
            {
                Seconds = new DateTimeOffset(DateTime.UtcNow.AddHours(24)).ToUnixTimeSeconds(),
            }
        };

        // Call the API.
        CryptoKey result = client.CreateCryptoKey(keyRingName, id, key);

        // Return the result.
        return result;
    }
}

Go

要运行此代码，请先设置 Go 开发环境并安装 Cloud KMS Go SDK。

import (
	"context"
	"fmt"
	"io"
	"time"

	kms "cloud.google.com/go/kms/apiv1"
	"github.com/golang/protobuf/ptypes/duration"
	"github.com/golang/protobuf/ptypes/timestamp"
	kmspb "google.golang.org/genproto/googleapis/cloud/kms/v1"
)

// createKeyRotationSchedule creates a key with a rotation schedule.
func createKeyRotationSchedule(w io.Writer, parent, id string) error {
	// name := "projects/my-project/locations/us-east1/keyRings/my-key-ring"
	// id := "my-key-with-rotation-schedule"

	// Create the client.
	ctx := context.Background()
	client, err := kms.NewKeyManagementClient(ctx)
	if err != nil {
		return fmt.Errorf("failed to create kms client: %v", err)
	}

	// Build the request.
	req := &kmspb.CreateCryptoKeyRequest{
		Parent:      parent,
		CryptoKeyId: id,
		CryptoKey: &kmspb.CryptoKey{
			Purpose: kmspb.CryptoKey_ENCRYPT_DECRYPT,
			VersionTemplate: &kmspb.CryptoKeyVersionTemplate{
				Algorithm: kmspb.CryptoKeyVersion_GOOGLE_SYMMETRIC_ENCRYPTION,
			},

			// Rotate the key every 30 days
			RotationSchedule: &kmspb.CryptoKey_RotationPeriod{
				RotationPeriod: &duration.Duration{
					Seconds: int64(60 * 60 * 24 * 30), // 30 days
				},
			},

			// Start the first rotation in 24 hours
			NextRotationTime: &timestamp.Timestamp{
				Seconds: time.Now().Add(24 * time.Hour).Unix(),
			},
		},
	}

	// Call the API.
	result, err := client.CreateCryptoKey(ctx, req)
	if err != nil {
		return fmt.Errorf("failed to create key: %v", err)
	}
	fmt.Fprintf(w, "Created key: %s\n", result.Name)
	return nil
}

Java

要运行此代码，请先设置 Java 开发环境并安装 Cloud KMS Java SDK。

import com.google.cloud.kms.v1.CryptoKey;
import com.google.cloud.kms.v1.CryptoKey.CryptoKeyPurpose;
import com.google.cloud.kms.v1.CryptoKeyVersion.CryptoKeyVersionAlgorithm;
import com.google.cloud.kms.v1.CryptoKeyVersionTemplate;
import com.google.cloud.kms.v1.KeyManagementServiceClient;
import com.google.cloud.kms.v1.KeyRingName;
import com.google.protobuf.Duration;
import com.google.protobuf.Timestamp;
import java.io.IOException;
import java.time.temporal.ChronoUnit;

public class CreateKeyRotationSchedule {

  public void createKeyRotationSchedule() throws IOException {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "your-project-id";
    String locationId = "us-east1";
    String keyRingId = "my-key-ring";
    String id = "my-key";
    createKeyRotationSchedule(projectId, locationId, keyRingId, id);
  }

  // Create a new key that automatically rotates on a schedule.
  public void createKeyRotationSchedule(
      String projectId, String locationId, String keyRingId, String id) throws 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 "close" method on the client to
    // safely clean up any remaining background resources.
    try (KeyManagementServiceClient client = KeyManagementServiceClient.create()) {
      // Build the parent name from the project, location, and key ring.
      KeyRingName keyRingName = KeyRingName.of(projectId, locationId, keyRingId);

      // Calculate the date 24 hours from now (this is used below).
      long tomorrow = java.time.Instant.now().plus(24, ChronoUnit.HOURS).getEpochSecond();

      // Build the key to create with a rotation schedule.
      CryptoKey key =
          CryptoKey.newBuilder()
              .setPurpose(CryptoKeyPurpose.ENCRYPT_DECRYPT)
              .setVersionTemplate(
                  CryptoKeyVersionTemplate.newBuilder()
                      .setAlgorithm(CryptoKeyVersionAlgorithm.GOOGLE_SYMMETRIC_ENCRYPTION))

              // Rotate every 30 days.
              .setRotationPeriod(
                  Duration.newBuilder().setSeconds(java.time.Duration.ofDays(30).getSeconds()))

              // Start the first rotation in 24 hours.
              .setNextRotationTime(Timestamp.newBuilder().setSeconds(tomorrow))
              .build();

      // Create the key.
      CryptoKey createdKey = client.createCryptoKey(keyRingName, id, key);
      System.out.printf("Created key with rotation schedule %s%n", createdKey.getName());
    }
  }
}

Node.js

要运行此代码，请先设置 Node.js 开发环境并安装 Cloud KMS Node.js SDK。

//
// TODO(developer): Uncomment these variables before running the sample.
//
// const projectId = 'my-project';
// const locationId = 'us-east1';
// const keyRingId = 'my-key-ring';
// const id = 'my-rotating-encryption-key';

// Imports the Cloud KMS library
const {KeyManagementServiceClient} = require('@google-cloud/kms');

// Instantiates a client
const client = new KeyManagementServiceClient();

// Build the parent key ring name
const keyRingName = client.keyRingPath(projectId, locationId, keyRingId);

async function createKeyRotationSchedule() {
  const [key] = await client.createCryptoKey({
    parent: keyRingName,
    cryptoKeyId: id,
    cryptoKey: {
      purpose: 'ENCRYPT_DECRYPT',
      versionTemplate: {
        algorithm: 'GOOGLE_SYMMETRIC_ENCRYPTION',
      },

      // Rotate the key every 30 days.
      rotationPeriod: {
        seconds: 60 * 60 * 24 * 30,
      },

      // Start the first rotation in 24 hours.
      nextRotationTime: {
        seconds: new Date().getTime() / 1000 + 60 * 60 * 24,
      },
    },
  });

  console.log(`Created rotating key: ${key.name}`);
  return key;
}

return createKeyRotationSchedule();

PHP

要运行此代码，请先了解如何在 Google Cloud 上使用 PHP 并安装 Cloud KMS PHP SDK。

use Google\Cloud\Kms\V1\CryptoKey;
use Google\Cloud\Kms\V1\CryptoKey\CryptoKeyPurpose;
use Google\Cloud\Kms\V1\CryptoKeyVersion\CryptoKeyVersionAlgorithm;
use Google\Cloud\Kms\V1\CryptoKeyVersionTemplate;
use Google\Cloud\Kms\V1\KeyManagementServiceClient;
use Google\Protobuf\Duration;
use Google\Protobuf\Timestamp;

function create_key_rotation_schedule_sample(
    string $projectId = 'my-project',
    string $locationId = 'us-east1',
    string $keyRingId = 'my-key-ring',
    string $id = 'my-key-with-rotation-schedule'
) {
    // Create the Cloud KMS client.
    $client = new KeyManagementServiceClient();

    // Build the parent key ring name.
    $keyRingName = $client->keyRingName($projectId, $locationId, $keyRingId);

    // Build the key.
    $key = (new CryptoKey())
        ->setPurpose(CryptoKeyPurpose::ENCRYPT_DECRYPT)
        ->setVersionTemplate((new CryptoKeyVersionTemplate())
            ->setAlgorithm(CryptoKeyVersionAlgorithm::GOOGLE_SYMMETRIC_ENCRYPTION))

        // Rotate the key every 30 days.
        ->setRotationPeriod((new Duration())
            ->setSeconds(60*60*24*30)
        )

        // Start the first rotation in 24 hours.
        ->setNextRotationTime((new Timestamp())
            ->setSeconds(time() + 60*60*24)
        );

    // Call the API.
    $createdKey = $client->createCryptoKey($keyRingName, $id, $key);
    printf('Created key with rotation: %s' . PHP_EOL, $createdKey->getName());
    return $createdKey;
}

Python

要运行此代码，请先设置 Python 开发环境并安装 Cloud KMS Python SDK。

def create_key_rotation_schedule(project_id, location_id, key_ring_id, id):
    """
    Creates a new key in Cloud KMS that automatically rotates.

    Args:
        project_id (string): Google Cloud project ID (e.g. 'my-project').
        location_id (string): Cloud KMS location (e.g. 'us-east1').
        key_ring_id (string): ID of the Cloud KMS key ring (e.g. 'my-key-ring').
        id (string): ID of the key to create (e.g. 'my-rotating-key').

    Returns:
        CryptoKey: Cloud KMS key.

    """

    # Import the client library.
    from google.cloud import kms

    # Import time for getting the current time.
    import time

    # Create the client.
    client = kms.KeyManagementServiceClient()

    # Build the parent key ring name.
    key_ring_name = client.key_ring_path(project_id, location_id, key_ring_id)

    # Build the key.
    purpose = kms.CryptoKey.CryptoKeyPurpose.ENCRYPT_DECRYPT
    algorithm = kms.CryptoKeyVersion.CryptoKeyVersionAlgorithm.GOOGLE_SYMMETRIC_ENCRYPTION
    key = {
        'purpose': purpose,
        'version_template': {
            'algorithm': algorithm,
        },

        # Rotate the key every 30 days.
        'rotation_period': {
            'seconds': 60*60*24*30
        },

        # Start the first rotation in 24 hours.
        'next_rotation_time': {
            'seconds': int(time.time()) + 60*60*24
        }
    }

    # Call the API.
    created_key = client.create_crypto_key(request={'parent': key_ring_name, 'crypto_key_id': id, 'crypto_key': key})
    print('Created labeled key: {}'.format(created_key.name))
    return created_key

Ruby

要运行此代码，请先设置 Ruby 开发环境并安装 Cloud KMS Ruby SDK。

# TODO(developer): uncomment these values before running the sample.
# project_id  = "my-project"
# location_id = "us-east1"
# key_ring_id = "my-key-ring"
# id          = "my-key-with-rotation"

# Require the library.
require "google/cloud/kms"

# Create the client.
client = Google::Cloud::Kms.key_management_service

# Build the parent key ring name.
key_ring_name = client.key_ring_path project: project_id, location: location_id, key_ring: key_ring_id

# Build the key.
key = {
  purpose:            :ENCRYPT_DECRYPT,
  version_template:   {
    algorithm: :GOOGLE_SYMMETRIC_ENCRYPTION
  },

  # Rotate the key every 30 days.
  rotation_period:    {
    seconds: 60 * 60 * 24 * 30
  },

  # Start the first rotation in 24 hours.
  next_rotation_time: {
    seconds: (Time.now + 60 * 60 * 24).to_i
  }
}

# Call the API.
created_key = client.create_crypto_key parent: key_ring_name, crypto_key_id: id, crypto_key: key
puts "Created rotating key: #{created_key.name}"

手动创建新的密钥版本

除了自动轮替外，您还可以手动轮替密钥。如需了解详情，请参阅轮替密钥。