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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_encrypt_symmetric]

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

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

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

import com.google.protobuf.ByteString;

import java.io.IOException;

public class EncryptSymmetric {

public void encryptSymmetric() 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 plaintext = "Plaintext to encrypt";

encryptSymmetric(projectId, locationId, keyRingId, keyId, plaintext);

}

// Encrypt data with a given key.

public void encryptSymmetric(

String projectId, String locationId, String keyRingId, String keyId, String plaintext)

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

// and key version.

CryptoKeyName keyVersionName = CryptoKeyName.of(projectId, locationId, keyRingId, keyId);

// Encrypt the plaintext.

EncryptResponse response = client.encrypt(keyVersionName, ByteString.copyFromUtf8(plaintext));

System.out.printf("Ciphertext: %s%n", response.getCiphertext().toStringUtf8());

}

}

}

// [END kms_encrypt_symmetric]