Rotating keys

This topic shows how to automatically or manually rotate a key. For more information about key rotation in general, see Key rotation.

Rotating keys and re-encrypting data requires the following roles or permissions:

Permission	Default role	Purpose
`cloudkms.cryptoKeys.update`	Cloud KMS Admin	Change primary key version Change or disable auto-rotate
`cloudkms.cryptoKeyVersions.create`	Cloud KMS Admin	Create new key version
`cloudkms.cryptoKeyVersions.update`	Cloud KMS Admin	Disable old key version
`cloudkms.cryptoKeyVersions.useToDecrypt`	Cloud KMS CryptoKey Decrypter Cloud KMS CryptoKey Encrypter/Decrypter	Use key version to decrypt data
`cloudkms.cryptoKeyVersions.useToEncrypt`	Cloud KMS CryptoKey Encrypter Cloud KMS CryptoKey Encrypter/Decrypter	Use key version to encrypt data

A single user with a custom role containing all of these permissions can rotate keys and re-encrypt data on their own. Users in the Cloud KMS Admin role and Cloud KMS CryptoKey Encrypter/Decrypter role can work together to rotate keys and re-encrypt data. Follow the principle of least privilege when assigning roles. For more details, see Permissions and roles.

When you rotate a key, data that was encrypted with previous key versions is not automatically re-encrypted. To learn more, see decrypt and re-encrypt. Rotating a key does not automatically disable or destroy any existing key versions.

Configuring automatic rotation

To configure automatic rotation when creating a new key:

Console

When you use the Google Cloud console to create a key, Cloud KMS sets the rotation period and next rotation time automatically. You can choose to use the default values or specify different values.

To specify a different rotation period and starting time, when you're creating your key, but before you click the Create button:

For Key rotation period, select an option.
For Starting on, select the date when you want the first automatic rotation to happen. You can leave Starting on at its default value to start the first automatic rotation one key rotation period from when you create the key.

gcloud CLI

To use Cloud KMS on the command line, first Install or upgrade to the latest version of Google Cloud CLI.

gcloud kms keys create KEY_NAME \
    --keyring KEY_RING \
    --location LOCATION \
    --purpose "encryption" \
    --rotation-period ROTATION_PERIOD \
    --next-rotation-time NEXT_ROTATION_TIME

Replace the following:

KEY_NAME: the name of the key.
KEY_RING: the name of the key ring that contains the key.
LOCATION: the Cloud KMS location of the key ring.
ROTATION_PERIOD: the interval to rotate the key—for example, 30d to rotate the key every 30 days. The rotation period must be at least 1 day and at most 100 years. For more information, see CryptoKey.rotationPeriod.
NEXT_ROTATION_TIME: the timestamp at which to complete the first rotation—for example, "2023-01-01T01:02:03". You can omit --next-rotation-time to schedule the first rotation for 7 days from when you run the command. For more information, see CryptoKey.nextRotationTime.

For information on all flags and possible values, run the command with the --help flag.

C#

To run this code, first set up a C# development environment and install the Cloud KMS C# SDK.

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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

To run this code, first set up a Go development environment and install the Cloud KMS Go SDK.

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

	kms "cloud.google.com/go/kms/apiv1"
	"cloud.google.com/go/kms/apiv1/kmspb"
	"google.golang.org/protobuf/types/known/durationpb"
	"google.golang.org/protobuf/types/known/timestamppb"
)

// 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)
	}
	defer client.Close()

	// 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: &durationpb.Duration{
					Seconds: int64(60 * 60 * 24 * 30), // 30 days
				},
			},

			// Start the first rotation in 24 hours
			NextRotationTime: &timestamppb.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

To run this code, first set up a Java development environment and install the Cloud KMS Java SDK.

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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

To run this code, first set up a Node.js development environment and install the Cloud KMS Node.js SDK.

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//
// 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

To run this code, first learn about using PHP on Google Cloud and install the Cloud KMS PHP SDK.

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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(
    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

To run this code, first set up a Python development environment and install the Cloud KMS Python SDK.

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def create_key_rotation_schedule(project_id, location_id, key_ring_id, key_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').
        key_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': key_id, 'crypto_key': key})
    print('Created labeled key: {}'.format(created_key.name))
    return created_key

Ruby

To run this code, first set up a Ruby development environment and install the Cloud KMS Ruby SDK.

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# 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}"

API

These examples use curl as an HTTP client to demonstrate using the API. For more information about access control, see Accessing the Cloud KMS API.

To create a key, use the CryptoKey.create method:

curl "https://cloudkms.googleapis.com/v1/projects/PROJECT_NAME/locations/LOCATION/keyRings/KEY_RING/cryptoKeys?crypto_key_id=KEY_NAME" \
    --request "POST" \
    --header "authorization: Bearer TOKEN" \
    --header "content-type: application/json" \
    --data '{"purpose": "PURPOSE", "rotationPeriod": "ROTATION_PERIOD", "nextRotationTime": "NEXT_ROTATION_TIME"}'

Replace the following:

PURPOSE: the purpose of the key.
ROTATION_PERIOD: the interval to rotate the key—for example, 30d to rotate the key every 30 days. The rotation period must be at least 1 day and at most 100 years. For more information, see CryptoKey.rotationPeriod.
NEXT_ROTATION_TIME: the timestamp at which to complete the first rotation—for example, "2023-01-01T01:02:03". You can omit --next-rotation-time to schedule the first rotation for 7 days from when you run the command. For more information, see CryptoKey.nextRotationTime.

To configure automatic rotation on an existing key:

Console

Go to the Key Management page in the Google Cloud console.

Go to the Key Management page
Click the name of the key ring that contains the key for which you want to add a rotation schedule.
Click the key you want to add a rotation schedule to.
In the header, click Edit Rotation Period.
In the prompt, choose new values for the Rotation period and Starting on fields.
In the prompt, click Save.

gcloud CLI

To use Cloud KMS on the command line, first Install or upgrade to the latest version of Google Cloud CLI.

gcloud kms keys update KEY_NAME \
    --location LOCATION \
    --keyring KEY_RING \
    --rotation-period ROTATION_PERIOD \
    --next-rotation-time NEXT_ROTATION_TIME

Replace the following:

KEY_NAME: the name of the key.
KEY_RING: the name of the key ring that contains the key.
LOCATION: the Cloud KMS location of the key ring.
ROTATION_PERIOD: the interval to rotate the key—for example, 30d to rotate the key every 30 days. The rotation period must be at least 1 day and at most 100 years. For more information, see CryptoKey.rotationPeriod.
NEXT_ROTATION_TIME: the timestamp at which to complete the first rotation—for example, "2023-01-01T01:02:03". You can omit --next-rotation-time to schedule the first rotation for 7 days from when you run the command. For more information, see CryptoKey.nextRotationTime.

For information on all flags and possible values, run the command with the --help flag.

C#

To run this code, first set up a C# development environment and install the Cloud KMS C# SDK.

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

public class UpdateKeyAddRotationSample
{
    public CryptoKey UpdateKeyAddRotation(string projectId = "my-project", string locationId = "us-east1", string keyRingId = "my-key-ring", string keyId = "my-key")
    {
        // Create the client.
        KeyManagementServiceClient client = KeyManagementServiceClient.Create();

        // Build the key.
        CryptoKey key = new CryptoKey
        {
            // Provide the name of the key to update.
            CryptoKeyName = new CryptoKeyName(projectId, locationId, keyRingId, keyId),

            // 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(),
            }
        };

        // Build the update mask.
        FieldMask fieldMask = new FieldMask
        {
            Paths = { "rotation_period", "next_rotation_time" },
        };

        // Call the API.
        CryptoKey result = client.UpdateCryptoKey(key, fieldMask);

        // Return the updated key.
        return result;
    }
}

Go

To run this code, first set up a Go development environment and install the Cloud KMS Go SDK.

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

	kms "cloud.google.com/go/kms/apiv1"
	"cloud.google.com/go/kms/apiv1/kmspb"
	fieldmask "google.golang.org/genproto/protobuf/field_mask"
	"google.golang.org/protobuf/types/known/durationpb"
	"google.golang.org/protobuf/types/known/timestamppb"
)

// addRotationSchedule updates a key to add a rotation schedule. If the key
// already has a rotation schedule, it is overwritten.
func addRotationSchedule(w io.Writer, name string) error {
	// name := "projects/my-project/locations/us-east1/keyRings/my-key-ring/cryptoKeys/my-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)
	}
	defer client.Close()

	// Build the request.
	req := &kmspb.UpdateCryptoKeyRequest{
		CryptoKey: &kmspb.CryptoKey{
			// Provide the name of the key to update
			Name: name,

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

			// Start the first rotation in 24 hours
			NextRotationTime: &timestamppb.Timestamp{
				Seconds: time.Now().Add(24 * time.Hour).Unix(),
			},
		},
		UpdateMask: &fieldmask.FieldMask{
			Paths: []string{"rotation_period", "next_rotation_time"},
		},
	}

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

Java

To run this code, first set up a Java development environment and install the Cloud KMS Java SDK.

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import com.google.cloud.kms.v1.CryptoKey;
import com.google.cloud.kms.v1.CryptoKey.CryptoKeyPurpose;
import com.google.cloud.kms.v1.CryptoKeyName;
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.protobuf.Duration;
import com.google.protobuf.FieldMask;
import com.google.protobuf.Timestamp;
import com.google.protobuf.util.FieldMaskUtil;
import java.io.IOException;
import java.time.temporal.ChronoUnit;

public class UpdateKeyAddRotation {

  public void updateKeyAddRotation() 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 keyId = "my-key";
    updateKeyAddRotation(projectId, locationId, keyRingId, keyId);
  }

  // Update a key to add or change a rotation schedule.
  public void updateKeyAddRotation(
      String projectId, String locationId, String keyRingId, String keyId) 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 name from the project, location, and key ring.
      CryptoKeyName cryptoKeyName = CryptoKeyName.of(projectId, locationId, keyRingId, keyId);

      // 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 update with a rotation schedule.
      CryptoKey key =
          CryptoKey.newBuilder()
              .setName(cryptoKeyName.toString())
              .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();

      // Construct the field mask.
      FieldMask fieldMask = FieldMaskUtil.fromString("rotation_period,next_rotation_time");

      // Update the key.
      CryptoKey updatedKey = client.updateCryptoKey(key, fieldMask);
      System.out.printf("Updated key %s%n", updatedKey.getName());
    }
  }
}

Node.js

To run this code, first set up a Node.js development environment and install the Cloud KMS Node.js SDK.

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//
// TODO(developer): Uncomment these variables before running the sample.
//
// const projectId = 'my-project';
// const locationId = 'us-east1';
// const keyRingId = 'my-key-ring';
// const keyId = 'my-key';
// const versionId = '123';

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

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

// Build the key name
const keyName = client.cryptoKeyPath(projectId, locationId, keyRingId, keyId);

async function updateKeyAddRotation() {
  const [key] = await client.updateCryptoKey({
    cryptoKey: {
      name: keyName,

      // 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,
      },
    },
    updateMask: {
      paths: ['rotation_period', 'next_rotation_time'],
    },
  });

  console.log(`Updated rotation for: ${key.name}`);
  return key;
}

return updateKeyAddRotation();

PHP

To run this code, first learn about using PHP on Google Cloud and install the Cloud KMS PHP SDK.

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use Google\Cloud\Kms\V1\CryptoKey;
use Google\Cloud\Kms\V1\KeyManagementServiceClient;
use Google\Protobuf\Duration;
use Google\Protobuf\FieldMask;
use Google\Protobuf\Timestamp;

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

    // Build the key name.
    $keyName = $client->cryptoKeyName($projectId, $locationId, $keyRingId, $keyId);

    // Build the key.
    $key = (new CryptoKey())
        ->setName($keyName)

        // 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)
        );

    // Create the field mask.
    $updateMask = (new FieldMask())
        ->setPaths(['rotation_period', 'next_rotation_time']);

    // Call the API.
    $updatedKey = $client->updateCryptoKey($key, $updateMask);
    printf('Updated key: %s' . PHP_EOL, $updatedKey->getName());

    return $updatedKey;
}

Python

To run this code, first set up a Python development environment and install the Cloud KMS Python SDK.

View on GitHub Feedback

def update_key_add_rotation(project_id, location_id, key_ring_id, key_id):
    """
    Add a rotation schedule to an existing key.

    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').
        key_id (string): ID of the key to use (e.g. 'my-key').

    Returns:
        CryptoKey: Updated 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 key name.
    key_name = client.crypto_key_path(project_id, location_id, key_ring_id, key_id)

    key = {
        'name': key_name,
        'rotation_period': {
            'seconds': 60*60*24*30  # Rotate the key every 30 days.
        },
        'next_rotation_time': {
            'seconds': int(time.time()) + 60*60*24  # Start the first rotation in 24 hours.
        }
    }

    # Build the update mask.
    update_mask = {'paths': ['rotation_period', 'next_rotation_time']}

    # Call the API.
    updated_key = client.update_crypto_key(request={'crypto_key': key, 'update_mask': update_mask})
    print('Updated key: {}'.format(updated_key.name))
    return updated_key

Ruby

To run this code, first set up a Ruby development environment and install the Cloud KMS Ruby SDK.

View on GitHub Feedback

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

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

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

# Build the parent key name.
key_name = client.crypto_key_path project:    project_id,
                                  location:   location_id,
                                  key_ring:   key_ring_id,
                                  crypto_key: key_id

# Build the key.
key = {
  name:               key_name,

  # 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
  }
}

# Build the field mask.
update_mask = { paths: ["rotation_period", "next_rotation_time"] }

# Call the API.
updated_key = client.update_crypto_key crypto_key: key, update_mask: update_mask
puts "Updated key: #{updated_key.name}"

API

These examples use curl as an HTTP client to demonstrate using the API. For more information about access control, see Accessing the Cloud KMS API.

To update a key, use the CryptoKey.patch method:

curl "https://cloudkms.googleapis.com/v1/projects/PROJECT_NAME/locations/LOCATION/keyRings/KEY_RING/cryptoKeys/KEY_NAME?updateMask=rotationPeriod,nextRotationTime" \
    --request "PATCH" \
    --header "authorization: Bearer TOKEN" \
    --header "content-type: application/json" \
    --data '{"rotationPeriod": "ROTATION_PERIOD", "nextRotationTime": "NEXT_ROTATION_TIME"}'

Replace the following:

ROTATION_PERIOD: the interval to rotate the key—for example, 30d to rotate the key every 30 days. The rotation period must be at least 1 day and at most 100 years. For more information, see CryptoKey.rotationPeriod.
NEXT_ROTATION_TIME: the timestamp at which to complete the first rotation—for example, "2023-01-01T01:02:03". You can omit --next-rotation-time to schedule the first rotation for 7 days from when you run the command. For more information, see CryptoKey.nextRotationTime.

Manually rotating a key

First, create a new key version:

Console

Go to the Key Management page in the Google Cloud console.

Go to the Key Management page
Click the name of the key ring that contains the key for which you will create a new key version.
Click the key for which you will create a new key version.
In the header, click Rotate.
In the prompt, click Rotate to confirm.

gcloud CLI

To use Cloud KMS on the command line, first Install or upgrade to the latest version of Google Cloud CLI.

gcloud kms keys versions create \
    --key KEY_NAME \
    --keyring KEY_RING \
    --location LOCATION

Replace the following:

KEY_NAME: the name of the key.
KEY_RING: the name of the key ring that contains the key.
LOCATION: the Cloud KMS location of the key ring.

Key versions are numbered sequentially.

For information on all flags and possible values, run the command with the --help flag.

C#

To run this code, first set up a C# development environment and install the Cloud KMS C# SDK.

View on GitHub Feedback


using Google.Cloud.Kms.V1;

public class CreateKeyVersionSample
{
    public CryptoKeyVersion CreateKeyVersion(string projectId = "my-project", string locationId = "us-east1", string keyRingId = "my-key-ring", string keyId = "my-key")
    {
        // Create the client.
        KeyManagementServiceClient client = KeyManagementServiceClient.Create();

        // Build the parent key name.
        CryptoKeyName keyName = new CryptoKeyName(projectId, locationId, keyRingId, keyId);

        // Build the key version.
        CryptoKeyVersion keyVersion = new CryptoKeyVersion { };

        // Call the API.
        CryptoKeyVersion result = client.CreateCryptoKeyVersion(keyName, keyVersion);

        // Return the result.
        return result;
    }
}

Go

To run this code, first set up a Go development environment and install the Cloud KMS Go SDK.

View on GitHub Feedback

import (
	"context"
	"fmt"
	"io"

	kms "cloud.google.com/go/kms/apiv1"
	"cloud.google.com/go/kms/apiv1/kmspb"
)

// createKeyVersion creates a new key version for the given key.
func createKeyVersion(w io.Writer, parent string) error {
	// parent := "projects/my-project/locations/us-east1/keyRings/my-key-ring/cryptoKeys/my-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)
	}
	defer client.Close()

	// Build the request.
	req := &kmspb.CreateCryptoKeyVersionRequest{
		Parent: parent,
	}

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

Java

To run this code, first set up a Java development environment and install the Cloud KMS Java SDK.

View on GitHub Feedback

import com.google.cloud.kms.v1.CryptoKeyName;
import com.google.cloud.kms.v1.CryptoKeyVersion;
import com.google.cloud.kms.v1.KeyManagementServiceClient;
import java.io.IOException;

public class CreateKeyVersion {

  public void createKeyVersion() 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 keyId = "my-key";
    createKeyVersion(projectId, locationId, keyRingId, keyId);
  }

  // Create a new key version.
  public void createKeyVersion(String projectId, String locationId, String keyRingId, String keyId)
      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.
      CryptoKeyName cryptoKeyName = CryptoKeyName.of(projectId, locationId, keyRingId, keyId);

      // Build the key version to create.
      CryptoKeyVersion keyVersion = CryptoKeyVersion.newBuilder().build();

      // Create the key.
      CryptoKeyVersion createdVersion = client.createCryptoKeyVersion(cryptoKeyName, keyVersion);
      System.out.printf("Created key version %s%n", createdVersion.getName());
    }
  }
}

Node.js

To run this code, first set up a Node.js development environment and install the Cloud KMS Node.js SDK.

View on GitHub Feedback

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

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

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

// Build the parent key name
const keyName = client.cryptoKeyPath(projectId, locationId, keyRingId, keyId);

async function createKeyVersion() {
  const [version] = await client.createCryptoKeyVersion({
    parent: keyName,
  });

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

return createKeyVersion();

PHP

To run this code, first learn about using PHP on Google Cloud and install the Cloud KMS PHP SDK.

View on GitHub Feedback

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

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

    // Build the parent key name.
    $keyName = $client->cryptoKeyName($projectId, $locationId, $keyRingId, $keyId);

    // Build the key version.
    $version = new CryptoKeyVersion();

    // Call the API.
    $createdVersion = $client->createCryptoKeyVersion($keyName, $version);
    printf('Created key version: %s' . PHP_EOL, $createdVersion->getName());

    return $createdVersion;
}

Python

To run this code, first set up a Python development environment and install the Cloud KMS Python SDK.

View on GitHub Feedback

def create_key_version(project_id, location_id, key_ring_id, key_id):
    """
    Creates a new version of the given key.

    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').
        key_id (string): ID of the key for which to create a new version (e.g. 'my-key').

    Returns:
        CryptoKeyVersion: Cloud KMS key version.

    """

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

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

    # Build the parent key name.
    key_name = client.crypto_key_path(project_id, location_id, key_ring_id, key_id)

    # Build the key version.
    version = {}

    # Call the API.
    created_version = client.create_crypto_key_version(request={'parent': key_name, 'crypto_key_version': version})
    print('Created key version: {}'.format(created_version.name))
    return created_version

Ruby

To run this code, first set up a Ruby development environment and install the Cloud KMS Ruby SDK.

View on GitHub Feedback

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

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

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

# Build the parent key name.
key_name = client.crypto_key_path project:    project_id,
                                  location:   location_id,
                                  key_ring:   key_ring_id,
                                  crypto_key: key_id

# Build the version.
version = {}

# Call the API.
created_version = client.create_crypto_key_version parent: key_name, crypto_key_version: version
puts "Created key version: #{created_version.name}"

API

These examples use curl as an HTTP client to demonstrate using the API. For more information about access control, see Accessing the Cloud KMS API.

To manually rotate a key, first create a new key version by calling the CryptoKeyVersions.create method.

curl "https://cloudkms.googleapis.com/v1/projects/PROJECT_NAME/locations/LOCATION/keyRings/KEY_RING/cryptoKeys/KEY_NAME/cryptoKeyVersions" \
    --request "POST" \
    --header "authorization: Bearer TOKEN"

This command creates a new key version, but doesn't set it as the primary version.

To set your new key version as primary, see Setting an existing version as the primary key version.

If necessary, re-encrypt data that was encrypted using the previous key version.

Setting an existing version as the primary key version

To set different key version as the primary version for a key, update the key with the new primary version information. A key version must be enabled before you can configure it as the primary version.

Console

Go to the Key Management page in the Google Cloud console.

Go to the Key Management page
Click the name of the key ring that contains the key whose primary version you want to update.
Click the key whose primary version you want to update.
On the row corresponding to the key version you want to make primary, click View More .
Click Make primary version in menu.
In the confirmation prompt, click Make primary.

gcloud CLI

To use Cloud KMS on the command line, first Install or upgrade to the latest version of Google Cloud CLI.

gcloud kms keys update KEY_NAME \
    --keyring KEY_RING \
    --location LOCATION \
    --primary-version KEY_VERSION

Replace the following:

KEY_NAME: the name of the key.
KEY_RING: the name of the key ring that contains the key.
LOCATION: the Cloud KMS location of the key ring.
KEY_VERSION: the version number of the new primary key version.

For information on all flags and possible values, run the command with the --help flag.

C#

To run this code, first set up a C# development environment and install the Cloud KMS C# SDK.

View on GitHub Feedback


using Google.Cloud.Kms.V1;

public class UpdateKeySetPrimarySample
{
    public CryptoKey UpdateKeySetPrimary(
      string projectId = "my-project", string locationId = "us-east1", string keyRingId = "my-key-ring", string keyId = "my-key",
      string keyVersionId = "123")
    {
        // Create the client.
        KeyManagementServiceClient client = KeyManagementServiceClient.Create();

        // Build the key name.
        CryptoKeyName keyName = new CryptoKeyName(projectId, locationId, keyRingId, keyId);

        // Call the API.
        CryptoKey result = client.UpdateCryptoKeyPrimaryVersion(keyName, keyVersionId);

        // Return the updated key.
        return result;
    }
}

Go

To run this code, first set up a Go development environment and install the Cloud KMS Go SDK.

View on GitHub Feedback

import (
	"context"
	"fmt"
	"io"

	kms "cloud.google.com/go/kms/apiv1"
	"cloud.google.com/go/kms/apiv1/kmspb"
)

// updateKeySetPrimary updates the primary key version on a Cloud KMS key.
func updateKeySetPrimary(w io.Writer, name, version string) error {
	// name := "projects/my-project/locations/us-east1/keyRings/my-key-ring/cryptoKeys/my-key"
	// version := "123"

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

	// Build the request.
	req := &kmspb.UpdateCryptoKeyPrimaryVersionRequest{
		Name:               name,
		CryptoKeyVersionId: version,
	}

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

	return nil
}

Java

To run this code, first set up a Java development environment and install the Cloud KMS Java SDK.

View on GitHub Feedback

import com.google.cloud.kms.v1.CryptoKey;
import com.google.cloud.kms.v1.CryptoKeyName;
import com.google.cloud.kms.v1.KeyManagementServiceClient;
import java.io.IOException;

public class UpdateKeySetPrimary {

  public void updateKeySetPrimary() 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 keyId = "my-key";
    String keyVersionId = "123";
    updateKeySetPrimary(projectId, locationId, keyRingId, keyId, keyVersionId);
  }

  // Update a key's primary version.
  public void updateKeySetPrimary(
      String projectId, String locationId, String keyRingId, String keyId, String keyVersionId)
      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 name from the project, location, key ring, and keyId.
      CryptoKeyName cryptoKeyName = CryptoKeyName.of(projectId, locationId, keyRingId, keyId);

      // Create the key.
      CryptoKey createdKey = client.updateCryptoKeyPrimaryVersion(cryptoKeyName, keyVersionId);
      System.out.printf("Updated key primary version %s%n", createdKey.getName());
    }
  }
}

Node.js

To run this code, first set up a Node.js development environment and install the Cloud KMS Node.js SDK.

View on GitHub Feedback

//
// TODO(developer): Uncomment these variables before running the sample.
//
// const projectId = 'my-project';
// const locationId = 'us-east1';
// const keyRingId = 'my-key-ring';
// const keyId = 'my-key';
// const versionId = '123';

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

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

// Build the key name
const keyName = client.cryptoKeyPath(projectId, locationId, keyRingId, keyId);

async function updateKeySetPrimary() {
  const [key] = await client.updateCryptoKeyPrimaryVersion({
    name: keyName,
    cryptoKeyVersionId: versionId,
  });

  console.log(`Set primary to ${versionId}`);
  return key;
}

return updateKeySetPrimary();

PHP

To run this code, first learn about using PHP on Google Cloud and install the Cloud KMS PHP SDK.

View on GitHub Feedback

use Google\Cloud\Kms\V1\KeyManagementServiceClient;

function update_key_set_primary(
    string $projectId = 'my-project',
    string $locationId = 'us-east1',
    string $keyRingId = 'my-key-ring',
    string $keyId = 'my-key',
    string $versionId = '123'
) {
    // Create the Cloud KMS client.
    $client = new KeyManagementServiceClient();

    // Build the key name.
    $keyName = $client->cryptoKeyName($projectId, $locationId, $keyRingId, $keyId);

    // Call the API.
    $updatedKey = $client->updateCryptoKeyPrimaryVersion($keyName, $versionId);
    printf('Updated primary %s to %s' . PHP_EOL, $updatedKey->getName(), $versionId);

    return $updatedKey;
}

Ruby

To run this code, first set up a Ruby development environment and install the Cloud KMS Ruby SDK.

View on GitHub Feedback

# TODO(developer): uncomment these values before running the sample.
# project_id  = "my-project"
# location_id = "us-east1"
# key_ring_id = "my-key-ring"
# key_id      = "my-key"
# version_id  = "123"

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

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

# Build the parent key name.
key_name = client.crypto_key_path project:    project_id,
                                  location:   location_id,
                                  key_ring:   key_ring_id,
                                  crypto_key: key_id

# Call the API.
updated_key = client.update_crypto_key_primary_version name: key_name, crypto_key_version_id: version_id
puts "Updated primary #{updated_key.name} to #{version_id}"

Python

To run this code, first set up a Python development environment and install the Cloud KMS Python SDK.

View on GitHub Feedback

def update_key_set_primary(project_id, location_id, key_ring_id, key_id, version_id):
    """
    Update the primary version of a key.

    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').
        key_id (string): ID of the key to use (e.g. 'my-key').
        version_id (string): ID of the key to make primary (e.g. '2').

    Returns:
        CryptoKey: Updated Cloud KMS key.

    """

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

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

    # Build the key name.
    key_name = client.crypto_key_path(project_id, location_id, key_ring_id, key_id)

    # Call the API.
    updated_key = client.update_crypto_key_primary_version(request={'name': key_name, 'crypto_key_version_id': version_id})
    print('Updated {} primary to {}'.format(updated_key.name, version_id))
    return updated_key

API

These examples use curl as an HTTP client to demonstrate using the API. For more information about access control, see Accessing the Cloud KMS API.

Change the primary key version by calling the CryptoKey.updatePrimaryVersion method.

curl "https://cloudkms.googleapis.com/v1/projects/PROJECT_NAME/locations/LOCATION/keyRings/KEY_RING/cryptoKeys/KEY_NAME:updatePrimaryVersion" \
    --request "POST" \
    --header "authorization: Bearer TOKEN" \
    --header "content-type: application/json" \
    --data '{"cryptoKeyVersionId": "KEY_VERSION"}'

Replace the following:

PROJECT_NAME: the name of the project that contains the key ring.
LOCATION: the Cloud KMS location of the key ring.
KEY_RING: the name of the key ring that contains the key.
KEY_NAME: the name of the key.
KEY_VERSION: the version number of the new primary key version.

When you change the primary key version, the change typically becomes consistent within 1 minute. However, this change can take up to 3 hours to propagate in exceptional cases. During this time, the prior primary version might be used to encrypt data. For more information, see Cloud KMS resource consistency.

Disabling automatic rotation

To disable automatic rotation on a key, clear the rotation schedule of the key:

Console

Go to the Key Management page in the Google Cloud console.

Go to the Key Management page
Click the name of the key ring that contains the key for which you want to remove the rotation schedule.
Click the key you want to remove the rotation schedule from.
In the header, click Edit Rotation Period.
In the prompt, click the Rotation period field and select Never (manual rotation).
In the prompt, click Save.

gcloud CLI

To use Cloud KMS on the command line, first Install or upgrade to the latest version of Google Cloud CLI.

gcloud kms keys update KEY_NAME \
    --keyring KEY_RING \
    --location LOCATION \
    --remove-rotation-schedule

Replace the following:

KEY_NAME: the name of the key.
KEY_RING: the name of the key ring that contains the key.
LOCATION: the Cloud KMS location of the key ring.

For information on all flags and possible values, run the command with the --help flag.

C#

To run this code, first set up a C# development environment and install the Cloud KMS C# SDK.

View on GitHub Feedback


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

public class UpdateKeyRemoveRotationSample
{
    public CryptoKey UpdateKeyRemoveRotation(string projectId = "my-project", string locationId = "us-east1", string keyRingId = "my-key-ring", string keyId = "my-key")
    {
        // Create the client.
        KeyManagementServiceClient client = KeyManagementServiceClient.Create();

        // Build the key.
        CryptoKey key = new CryptoKey
        {
            CryptoKeyName = new CryptoKeyName(projectId, locationId, keyRingId, keyId),
            RotationPeriod = null,
            NextRotationTime = null,
        };

        // Build the update mask.
        FieldMask fieldMask = new FieldMask
        {
            Paths = { "rotation_period", "next_rotation_time" },
        };

        // Call the API.
        CryptoKey result = client.UpdateCryptoKey(key, fieldMask);

        // Return the updated key.
        return result;
    }
}

Go

To run this code, first set up a Go development environment and install the Cloud KMS Go SDK.

View on GitHub Feedback

import (
	"context"
	"fmt"
	"io"

	kms "cloud.google.com/go/kms/apiv1"
	"cloud.google.com/go/kms/apiv1/kmspb"
	fieldmask "google.golang.org/genproto/protobuf/field_mask"
)

// removeRotationSchedule updates a key to remove a rotation schedule, if one
// exists.
func removeRotationSchedule(w io.Writer, name string) error {
	// name := "projects/my-project/locations/us-east1/keyRings/my-key-ring/cryptoKeys/my-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)
	}
	defer client.Close()

	// Build the request.
	req := &kmspb.UpdateCryptoKeyRequest{
		CryptoKey: &kmspb.CryptoKey{
			// Provide the name of the key to update
			Name: name,

			// Remove any rotation fields.
			RotationSchedule: nil,
			NextRotationTime: nil,
		},
		UpdateMask: &fieldmask.FieldMask{
			Paths: []string{"rotation_period", "next_rotation_time"},
		},
	}

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

Java

To run this code, first set up a Java development environment and install the Cloud KMS Java SDK.

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import com.google.cloud.kms.v1.CryptoKey;
import com.google.cloud.kms.v1.CryptoKeyName;
import com.google.cloud.kms.v1.KeyManagementServiceClient;
import com.google.protobuf.FieldMask;
import com.google.protobuf.util.FieldMaskUtil;
import java.io.IOException;

public class UpdateKeyRemoveRotation {

  public void updateKeyRemoveRotation() 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 keyId = "my-key";
    updateKeyRemoveRotation(projectId, locationId, keyRingId, keyId);
  }

  // Update a key to remove all labels.
  public void updateKeyRemoveRotation(
      String projectId, String locationId, String keyRingId, String keyId) 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 name from the project, location, key ring, and keyId.
      CryptoKeyName cryptoKeyName = CryptoKeyName.of(projectId, locationId, keyRingId, keyId);

      // Build an empty key with no labels.
      CryptoKey key =
          CryptoKey.newBuilder()
              .setName(cryptoKeyName.toString())
              .clearRotationPeriod()
              .clearNextRotationTime()
              .build();

      // Construct the field mask.
      FieldMask fieldMask = FieldMaskUtil.fromString("rotation_period,next_rotation_time");

      // Create the key.
      CryptoKey createdKey = client.updateCryptoKey(key, fieldMask);
      System.out.printf("Updated key %s%n", createdKey.getName());
    }
  }
}

Node.js

To run this code, first set up a Node.js development environment and install the Cloud KMS Node.js SDK.

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

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

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

// Build the key name
const keyName = client.cryptoKeyPath(projectId, locationId, keyRingId, keyId);

async function updateKeyRemoveRotation() {
  const [key] = await client.updateCryptoKey({
    cryptoKey: {
      name: keyName,
      rotationPeriod: null,
      nextRotationTime: null,
    },
    updateMask: {
      paths: ['rotation_period', 'next_rotation_time'],
    },
  });

  console.log(`Removed rotation for: ${key.name}`);
  return key;
}

return updateKeyRemoveRotation();

PHP

To run this code, first learn about using PHP on Google Cloud and install the Cloud KMS PHP SDK.

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use Google\Cloud\Kms\V1\CryptoKey;
use Google\Cloud\Kms\V1\KeyManagementServiceClient;
use Google\Protobuf\FieldMask;

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

    // Build the key name.
    $keyName = $client->cryptoKeyName($projectId, $locationId, $keyRingId, $keyId);

    // Build the key.
    $key = (new CryptoKey())
        ->setName($keyName);

    // Create the field mask.
    $updateMask = (new FieldMask())
        ->setPaths(['rotation_period', 'next_rotation_time']);

    // Call the API.
    $updatedKey = $client->updateCryptoKey($key, $updateMask);
    printf('Updated key: %s' . PHP_EOL, $updatedKey->getName());

    return $updatedKey;
}

Ruby

To run this code, first set up a Ruby development environment and install the Cloud KMS Ruby SDK.

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

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

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

# Build the parent key name.
key_name = client.crypto_key_path project:    project_id,
                                  location:   location_id,
                                  key_ring:   key_ring_id,
                                  crypto_key: key_id

# Build the key.
key = {
  name:               key_name,
  rotation_period:    nil,
  next_rotation_time: nil
}

# Build the field mask.
update_mask = { paths: ["rotation_period", "next_rotation_time"] }

# Call the API.
updated_key = client.update_crypto_key crypto_key: key, update_mask: update_mask
puts "Updated key: #{updated_key.name}"

Python

To run this code, first set up a Python development environment and install the Cloud KMS Python SDK.

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def update_key_remove_rotation(project_id, location_id, key_ring_id, key_id):
    """
    Remove a rotation schedule from an existing key.

    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').
        key_id (string): ID of the key to use (e.g. 'my-key').

    Returns:
        CryptoKey: Updated Cloud KMS key.

    """

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

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

    # Build the key name.
    key_name = client.crypto_key_path(project_id, location_id, key_ring_id, key_id)

    key = {
        'name': key_name
    }

    # Build the update mask.
    update_mask = {'paths': ['rotation_period', 'next_rotation_time']}

    # Call the API.
    updated_key = client.update_crypto_key(request={'crypto_key': key, 'update_mask': update_mask})
    print('Updated key: {}'.format(updated_key.name))
    return updated_key

API

These examples use curl as an HTTP client to demonstrate using the API. For more information about access control, see Accessing the Cloud KMS API.

To update a key, use the CryptoKey.patch method:

curl "https://cloudkms.googleapis.com/v1/projects/PROJECT_NAME/locations/LOCATION/keyRings/KEY_RING/cryptoKeys/KEY_NAME?updateMask=rotationPeriod,nextRotationTime" \
    --request "PATCH" \
    --header "authorization: Bearer TOKEN" \
    --header "content-type: application/json" \
    --data '{"rotationPeriod": null, "nextRotationTime": null}'

For additional details about rotationPeriod and nextRotationTime, see keyRings.cryptoKeys.