ClientSideEncryptionSimpleTour.java

/*
 * Copyright 2008-present MongoDB, 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.
 */

package tour;

import com.mongodb.AutoEncryptionSettings;
import com.mongodb.ConnectionString;
import com.mongodb.MongoClientSettings;
import com.mongodb.client.MongoClient;
import com.mongodb.client.MongoClients;
import com.mongodb.client.MongoCollection;
import org.bson.Document;

import java.security.SecureRandom;
import java.util.HashMap;
import java.util.Map;

/**
 * ClientSideEncryption Simple tour
 */
public class ClientSideEncryptionSimpleTour {

    /**
     * Run this main method to see the output of this quick example.
     * <p>
     * Requires the mongodb-crypt library in the class path and mongocryptd on the system path.
     * Assumes the schema has already been created in MongoDB.
     *
     * @param args ignored args
     */
    public static void main(final String[] args) {

        // This would have to be the same master key as was used to create the encryption key
        byte[] localMasterKey = new byte[96];
        new SecureRandom().nextBytes(localMasterKey);

        Map<String, Map<String, Object>> kmsProviders = new HashMap<String, Map<String, Object>>() {{
           put("local", new HashMap<String, Object>() {{
               put("key", localMasterKey);
           }});
        }};

        String keyVaultNamespace = "encryption.__keyVault";

        AutoEncryptionSettings autoEncryptionSettings = AutoEncryptionSettings.builder()
                .keyVaultNamespace(keyVaultNamespace)
                .kmsProviders(kmsProviders)
                .build();

        MongoClientSettings clientSettings = (
                args.length == 0
                        ? MongoClientSettings.builder()
                        : MongoClientSettings.builder().applyConnectionString(new ConnectionString(args[0])))
                .autoEncryptionSettings(autoEncryptionSettings)
                .build();

        MongoClient mongoClient = MongoClients.create(clientSettings);
        MongoCollection<Document> collection = mongoClient.getDatabase("test").getCollection("coll");
        collection.drop(); // Clear old data

        collection.insertOne(new Document("encryptedField", "123456789"));

        System.out.println(collection.find().first().toJson());

        // release resources
        mongoClient.close();
    }
}