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<?php

/**

* Copyright 2018 Google Inc.

*

* 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.

*/

/**

* For instructions on how to run the full sample:

*

* @see https://github.com/GoogleCloudPlatform/php-docs-samples/tree/master/kms/README.md

*/

// Include Google Cloud dependendencies using Composer

require_once __DIR__ . '/../vendor/autoload.php';

if (count($argv) != 7) {

return printf("Usage: php %s PROJECT_ID LOCATION_ID KEYRING_ID CRYPTOKEY_ID PLAINTEXT_FILENAME CIPHERTEXT_FILENAME\n", basename(__FILE__));

}

list($_, $projectId, $locationId, $keyRingId, $cryptoKeyId, $plaintextFileName, $ciphertextFileName) = $argv;

# [START kms_encrypt]

use Google\Cloud\Kms\V1\KeyManagementServiceClient;

/** Uncomment and populate these variables in your code */

// $projectId = 'The Google project ID';

// $locationId = 'The location ID of the crypto key. Can be "global", "us-west1", etc.';

// $keyRingId = 'The KMS key ring ID';

// $cryptoKeyId = 'The KMS key ID';

// $plaintextFileName = 'The path to the file containing plaintext to encrypt';

// $ciphertextFileName = 'The path to write the ciphertext';

$kms = new KeyManagementServiceClient();

// The resource name of the CryptoKey.

$cryptoKeyName = $kms->cryptoKeyName($projectId, $locationId, $keyRingId, $cryptoKeyId);

$plaintext = file_get_contents($plaintextFileName);

$response = $kms->encrypt($cryptoKeyName, $plaintext);

// Write the encrypted text to a file.

file_put_contents($ciphertextFileName, $response->getCiphertext());

printf('Saved encrypted text to %s' . PHP_EOL, $ciphertextFileName);

# [END kms_encrypt]