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/*

* Copyright 2021 Google LLC

*

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

package kms;

// [START kms_create_key_mac]

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 CreateKeyMac {

public void createKeyMac() 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-mac-key";

createKeyMac(projectId, locationId, keyRingId, id);

}

// Create a new key for use with MacSign.

public void createKeyMac(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 mac key to create.

CryptoKey key =

CryptoKey.newBuilder()

.setPurpose(CryptoKeyPurpose.MAC)

.setVersionTemplate(

CryptoKeyVersionTemplate.newBuilder()

.setAlgorithm(CryptoKeyVersionAlgorithm.HMAC_SHA256))

.build();

// Create the key.

CryptoKey createdKey = client.createCryptoKey(keyRingName, id, key);

System.out.printf("Created mac key %s%n", createdKey.getName());

}

}

}

// [END kms_create_key_mac]