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rotateEncryptionKey.js
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rotateEncryptionKey.js
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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.
/**
* This application demonstrates how to perform basic operations on encrypted
* files with the Google Cloud Storage API.
*
* For more information, see the README.md under /storage and the documentation
* at https://cloud.google.com/storage/docs.
*/
function main(
bucketName = 'my-bucket',
fileName = 'test.txt',
oldKey = process.env.GOOGLE_CLOUD_KMS_KEY_US,
newKey = process.env.GOOGLE_CLOUD_KMS_KEY_ASIA,
generationMatchPrecondition = 0
) {
// [START storage_rotate_encryption_key]
/**
* TODO(developer): Uncomment the following lines before running the sample.
*/
// The ID of your GCS bucket
// const bucketName = 'your-unique-bucket-name';
// The ID of your GCS file
// const fileName = 'your-file-name';
// The Base64 encoded AES-256 encryption key originally used to encrypt the
// object. See the documentation on Customer-Supplied Encryption keys for
// more info:
// https://cloud.google.com/storage/docs/encryption/using-customer-supplied-keys
// The Base64 encoded AES-256 encryption key originally used to encrypt the
// const oldKey = 'TIbv/fjexq+VmtXzAlc63J4z5kFmWJ6NdAPQulQBT7g=';
// The new encryption key to use
// const newKey = '0mMWhFvQOdS4AmxRpo8SJxXn5MjFhbz7DkKBUdUIef8=';
// Imports the Google Cloud client library
const {Storage} = require('@google-cloud/storage');
// Creates a client
const storage = new Storage();
async function rotateEncryptionKey() {
const rotateEncryptionKeyOptions = {
encryptionKey: Buffer.from(newKey, 'base64'),
// Optional: set a generation-match precondition to avoid potential race
// conditions and data corruptions. The request to copy is aborted if the
// object's generation number does not match your precondition.
preconditionOpts: {
ifGenerationMatch: generationMatchPrecondition,
},
};
await storage
.bucket(bucketName)
.file(fileName, {
encryptionKey: Buffer.from(oldKey, 'base64'),
})
.rotateEncryptionKey({
rotateEncryptionKeyOptions,
});
console.log('Encryption key rotated successfully');
}
rotateEncryptionKey().catch(console.error);
// [END storage_rotate_encryption_key]
}
main(...process.argv.slice(2));