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/*

* Copyright 2020 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_get_public_key]

import com.google.cloud.kms.v1.CryptoKeyVersionName;

import com.google.cloud.kms.v1.KeyManagementServiceClient;

import com.google.cloud.kms.v1.PublicKey;

import java.io.IOException;

import java.security.GeneralSecurityException;

public class GetPublicKey {

public void getPublicKey() throws IOException, GeneralSecurityException {

// 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";

getPublicKey(projectId, locationId, keyRingId, keyId, keyVersionId);

}

// Get the public key associated with an asymmetric key.

public void getPublicKey(

String projectId, String locationId, String keyRingId, String keyId, String keyVersionId)

throws IOException, GeneralSecurityException {

// 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 key version name from the project, location, key ring, key,

// and key version.

CryptoKeyVersionName keyVersionName =

CryptoKeyVersionName.of(projectId, locationId, keyRingId, keyId, keyVersionId);

// Get the public key.

PublicKey publicKey = client.getPublicKey(keyVersionName);

System.out.printf("Public key: %s%n", publicKey.getPem());

}

}

}

// [END kms_get_public_key]