Use Automatic Queryable Encryption with Azure

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Overview

Before You Get Started
Set Up the KMS
Register your Application with Azure
Create the Customer Master Key
Create the Application
Assign Your Application Variables
Create your Encrypted Collection
Insert a Document with Encrypted Fields
Query on an Encrypted Field
Learn More

Overview

This guide shows you how to build an application that implements the MongoDB Queryable Encryption feature to automatically encrypt and decrypt document fields and use Azure Key Vault KMS for key management.

After you complete the steps in this guide, you should have:

A Customer Master Key managed by Azure Key Vault
A working client application that inserts documents with encrypted fields using your Customer Master Key

Tip

Customer Master Keys

To learn more about the Customer Master Key, read the Keys and Key Vaults documentation.

Before You Get Started

To complete and run the code in this guide, you need to set up your development environment as shown in the Installation Requirements page.

Tip

See: Full Application

To see the complete code for this sample application, select the tab corresponding to your programming language and follow the provided link. Each sample application repository includes a README.md file that you can use to learn how to set up your environment and run the application.

Complete mongosh Application

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Set Up the KMS

Register your Application with Azure

Log in to Azure.

Register your Application with Azure Active Directory

To register an application on Azure Active Directory, follow Microsoft's official Register an application with the Microsoft identity platform Quick Start.

Important

Record your Credentials

Ensure you record the following credentials:

Tenant ID
Client ID
Client secret

You will need them to construct your kmsProviders object later in this tutorial.

Important

Record your Credentials

Ensure you record the following credentials:

Tenant ID
Client ID
Client secret

You will need them to construct your kmsProviders object later in this tutorial.

Important

Record your Credentials

Ensure you record the following credentials:

Tenant ID
Client ID
Client secret

You will need them to construct your kmsProviders object later in this tutorial.

Important

Record your Credentials

Ensure you record the following credentials:

tenant id
client id
client secret

Unless you are running your client within an Azure Virtual Machine, you will need these credentials to construct your kmsProviders object later in this tutorial.

Important

Record your Credentials

Ensure you record the following credentials:

Tenant ID
Client ID
Client secret

You will need them to construct your kmsProviders object later in this tutorial.

Important

Record your Credentials

Ensure you record the following credentials:

Tenant ID
Client ID
Client secret

You will need them to construct your kmsProviders object later in this tutorial.

Create the Customer Master Key

Create your Azure Key Vault and Customer Master Key

To create a new Azure Key Vault instance and Customer Master Key, follow Microsoft's official Set and retrieve a key from Azure Key Vault using the Azure portal Quick Start.

Important

Record your Credentials

Ensure you record the following credentials:

Key Name
Key Identifier (referred to as keyVaultEndpoint later in this guide)
Key Version

You will need them to construct your dataKeyOpts object later in this tutorial.

Grant Permissions

Grant your client application wrap and unwrap permissions to the key.

Create the Application

Assign Your Application Variables

The code samples in this tutorial use the following variables to perform the Queryable Encryption workflow:

kmsProviderName - The KMS you're using to store your Customer Master Key. Set this variable to "azure" for this tutorial.
uri - Your MongoDB deployment connection URI. Set your connection URI in the MONGODB_URI environment variable or replace the value directly.
keyVaultDatabaseName - The database in MongoDB where your data encryption keys (DEKs) will be stored. Set this variable to "encryption".
keyVaultCollectionName - The collection in MongoDB where your DEKs will be stored. Set this variable to "__keyVault".
keyVaultNamespace - The namespace in MongoDB where your DEKs will be stored. Set this variable to the values of the keyVaultDatabaseName and keyVaultCollectionName variables, separated by a period.
encryptedDatabaseName - The database in MongoDB where your encrypted data will be stored. Set this variable to "medicalRecords".
encryptedCollectionName - The collection in MongoDB where your encrypted data will be stored. Set this variable to "patients".

You can declare these variables by using the following code:

// KMS provider name should be one of the following: "aws", "gcp", "azure", "kmip" or "local"
const kmsProviderName = "<Your KMS Provider Name>";
const uri = process.env.MONGODB_URI; // Your connection URI
const keyVaultDatabaseName = "encryption";
const keyVaultCollectionName = "__keyVault";
const keyVaultNamespace = `${keyVaultDatabaseName}.${keyVaultCollectionName}`;
const encryptedDatabaseName = "medicalRecords";
const encryptedCollectionName = "patients";

kmsProviderName - The KMS you're using to store your Customer Master Key. Set this value to "azure" for this tutorial.
keyVaultDatabaseName - The database in MongoDB where your data encryption keys (DEKs) will be stored. Set the value of keyVaultDatabaseName to "encryption".
keyVaultCollectionName - The collection in MongoDB where your DEKs will be stored. Set the value of keyVaultCollectionName to "__keyVault".
keyVaultNamespace - The namespace in MongoDB where your DEKs will be stored. Set keyVaultNamespace to a new CollectionNamespace object whose name is the values of the keyVaultDatabaseName and keyVaultCollectionName variables, separated by a period.
encryptedDatabaseName - The database in MongoDB where your encrypted data will be stored. Set the value of encryptedDatabaseName to "medicalRecords".
encryptedCollectionName - The collection in MongoDB where your encrypted data will be stored. Set the value of encryptedCollectionName to "patients".
uri - Your MongoDB deployment connection URI. Set your connection URI in the appsettings.json file or replace the value directly.

You can declare these variables by using the following code:

// KMS provider name should be one of the following: "aws", "gcp", "azure", "kmip" or "local"
const string kmsProviderName = "<your KMS provider name>";
const string keyVaultDatabaseName = "encryption";
const string keyVaultCollectionName = "__keyVault";
var keyVaultNamespace =
    CollectionNamespace.FromFullName($"{keyVaultDatabaseName}.{keyVaultCollectionName}");
const string encryptedDatabaseName = "medicalRecords";
const string encryptedCollectionName = "patients";
var appSettings = new ConfigurationBuilder().AddJsonFile("appsettings.json").Build();
var uri = appSettings["MongoDbUri"];

kmsProviderName - The KMS you're using to store your Customer Master Key. Set this variable to "azure" for this tutorial.
uri - Your MongoDB deployment connection URI. Set your connection URI in the MONGODB_URI environment variable or replace the value directly.
keyVaultDatabaseName - The database in MongoDB where your data encryption keys (DEKs) will be stored. Set this variable to "encryption".
keyVaultCollectionName - The collection in MongoDB where your DEKs will be stored. Set this variable to "__keyVault".
keyVaultNamespace - The namespace in MongoDB where your DEKs will be stored. Set this variable to the values of the keyVaultDatabaseName and keyVaultCollectionName variables, separated by a period.
encryptedDatabaseName - The database in MongoDB where your encrypted data will be stored. Set this variable to "medicalRecords".
encryptedCollectionName - The collection in MongoDB where your encrypted data will be stored. Set this variable to "patients".

You can declare these variables by using the following code:

// KMS provider name should be one of the following: "aws", "gcp", "azure", "kmip" or "local"
kmsProviderName := "<KMS provider name>"
uri := os.Getenv("MONGODB_URI") // Your connection URI
keyVaultDatabaseName := "encryption"
keyVaultCollectionName := "__keyVault"
keyVaultNamespace := keyVaultDatabaseName + "." + keyVaultCollectionName
encryptedDatabaseName := "medicalRecords"
encryptedCollectionName := "patients"

kmsProviderName - The KMS you're using to store your Customer Master Key. Set this variable to "azure" for this tutorial.
uri - Your MongoDB deployment connection URI. Set your connection URI in the MONGODB_URI environment variable or replace the value directly.
keyVaultDatabaseName - The database in MongoDB where your data encryption keys (DEKs) will be stored. Set this variable to "encryption".
keyVaultCollectionName - The collection in MongoDB where your DEKs will be stored. Set this variable to "__keyVault".
keyVaultNamespace - The namespace in MongoDB where your DEKs will be stored. Set this variable to the values of the keyVaultDatabaseName and keyVaultCollectionName variables, separated by a period.
encryptedDatabaseName - The database in MongoDB where your encrypted data will be stored. Set this variable to "medicalRecords".
encryptedCollectionName - The collection in MongoDB where your encrypted data will be stored. Set this variable to "patients".

You can declare these variables by using the following code:

// KMS provider name should be one of the following: "aws", "gcp", "azure", "kmip" or "local"
String kmsProviderName = "<KMS provider name>";
String uri = QueryableEncryptionHelpers.getEnv("MONGODB_URI"); // Your connection URI
String keyVaultDatabaseName = "encryption";
String keyVaultCollectionName = "__keyVault";
String keyVaultNamespace = keyVaultDatabaseName + "." + keyVaultCollectionName;
String encryptedDatabaseName = "medicalRecords";
String encryptedCollectionName = "patients";

kmsProviderName - The KMS you're using to store your Customer Master Key. Set this variable to "azure" for this tutorial.
uri - Your MongoDB deployment connection URI. Set your connection URI in the MONGODB_URI environment variable or replace the value directly.
keyVaultDatabaseName - The database in MongoDB where your data encryption keys (DEKs) will be stored. Set this variable to "encryption".
keyVaultCollectionName - The collection in MongoDB where your DEKs will be stored. Set this variable to "__keyVault".
keyVaultNamespace - The namespace in MongoDB where your DEKs will be stored. Set this variable to the values of the keyVaultDatabaseName and keyVaultCollectionName variables, separated by a period.
encryptedDatabaseName - The database in MongoDB where your encrypted data will be stored. Set this variable to "medicalRecords".
encryptedCollectionName - The collection in MongoDB where your encrypted data will be stored. Set this variable to "patients".

You can declare these variables by using the following code:

// KMS provider name should be one of the following: "aws", "gcp", "azure", "kmip" or "local"
const kmsProviderName = "<Your KMS Provider Name>";
const uri = process.env.MONGODB_URI; // Your connection URI
const keyVaultDatabaseName = "encryption";
const keyVaultCollectionName = "__keyVault";
const keyVaultNamespace = `${keyVaultDatabaseName}.${keyVaultCollectionName}`;
const encryptedDatabaseName = "medicalRecords";
const encryptedCollectionName = "patients";

kms_provider_name - The KMS you're using to store your Customer Master Key. Set this variable to "azure" for this tutorial.
uri - Your MongoDB deployment connection URI. Set your connection URI in the MONGODB_URI environment variable or replace the value directly.
key_vault_database_name - The database in MongoDB where your data encryption keys (DEKs) will be stored. Set this variable to "encryption".
key_vault_collection_name - The collection in MongoDB where your DEKs will be stored. Set this variable to "__keyVault".
key_vault_namespace - The namespace in MongoDB where your DEKs will be stored. Set this variable to the values of the key_vault_database_name and key_vault_collection_name variables, separated by a period.
encrypted_database_name - The database in MongoDB where your encrypted data will be stored. Set this variable to "medicalRecords".
encrypted_collection_name - The collection in MongoDB where your encrypted data will be stored. Set this variable to "patients".

You can declare these variables by using the following code:

# KMS provider name should be one of the following: "aws", "gcp", "azure", "kmip" or "local"
kms_provider_name = "<KMS provider name>"
uri = os.environ['MONGODB_URI']  # Your connection URI
key_vault_database_name = "encryption"
key_vault_collection_name = "__keyVault"
key_vault_namespace = f"{key_vault_database_name}.{key_vault_collection_name}"
encrypted_database_name = "medicalRecords"
encrypted_collection_name = "patients"

Important

Key Vault Collection Namespace Permissions

kmsProviderCredentials = {
  azure: {
    tenantId: process.env["AZURE_TENANT_ID"], // Your Azure tenant ID
    clientId: process.env["AZURE_CLIENT_ID"], // Your Azure client ID
    clientSecret: process.env["AZURE_CLIENT_SECRET"], // Your Azure client secret
  },
};

var kmsProviderCredentials = new Dictionary<string, IReadOnlyDictionary<string, object>>();
var kmsOptions = new Dictionary<string, object>
{
    { "tenantId", _appSettings["Azure:TenantId"] }, // Your Azure tenant ID
    { "clientId", _appSettings["Azure:ClientId"] }, // Your Azure client ID
    { "clientSecret", _appSettings["Azure:ClientSecret"] } // Your Azure client secret
};
kmsProviderCredentials.Add(kmsProvider, kmsOptions);

kmsProviderCredentials := map[string]map[string]interface{}{
	"azure": {
		"tenantId":     os.Getenv("AZURE_TENANT_ID"),     // Azure tenant ID
		"clientId":     os.Getenv("AZURE_CLIENT_ID"),     // Azure client ID
		"clientSecret": os.Getenv("AZURE_CLIENT_SECRET"), // Azure client secret
	},
}

Map<String, Object> kmsProviderDetails = new HashMap<>();
kmsProviderDetails.put("tenantId", getEnv("AZURE_TENANT_ID")); // Your Azure tenant ID
kmsProviderDetails.put("clientId", getEnv("AZURE_CLIENT_ID")); // Your Azure client ID
kmsProviderDetails.put("clientSecret", getEnv("AZURE_CLIENT_SECRET")); // Your Azure client secret
Map<String, Map<String, Object>> kmsProviderCredentials = new HashMap<String, Map<String, Object>>();
kmsProviderCredentials.put("azure", kmsProviderDetails);

kmsProviders = {
  azure: {
    tenantId: process.env.AZURE_TENANT_ID, // Your Azure tenant ID
    clientId: process.env.AZURE_CLIENT_ID, // Your Azure client ID
    clientSecret: process.env.AZURE_CLIENT_SECRET, // Your Azure client secret
  },
};

kms_provider_credentials = {
    "azure": {
        "tenantId": os.environ['AZURE_TENANT_ID'], # Your Azure tenant ID
        "clientId": os.environ['AZURE_CLIENT_ID'], # Your Azure client ID
        "clientSecret": os.environ['AZURE_CLIENT_SECRET'] # Your Azure client secret
    }
}

Add your Customer Master Key Credentials

Create a variable containing your Customer Master Key credentials with the following structure. Use the Customer Master Key details you recorded in the Create a Customer Master Key step of this tutorial.

customerMasterKeyCredentials = {
  keyVaultEndpoint: process.env["AZURE_KEY_VAULT_ENDPOINT"], // Your Azure Key Vault Endpoint
  keyName: process.env["AZURE_KEY_NAME"], // Your Azure Key Name
};

var customerMasterKeyCredentials = new BsonDocument
{
    { "keyVaultEndpoint", _appSettings["Azure:KeyVaultEndpoint"] }, // Your Azure Key Vault Endpoint
    { "keyName", _appSettings["Azure:KeyName"] } // Your Azure Key Name
};

customerMasterKeyCredentials := map[string]string{
	"keyVaultEndpoint": os.Getenv("AZURE_KEY_VAULT_ENDPOINT"), // Your Azure Key Vault Endpoint
	"keyName":          os.Getenv("AZURE_KEY_NAME"),           // Your Azure Key Name
}

BsonDocument customerMasterKeyCredentials = new BsonDocument();
customerMasterKeyCredentials.put("provider", new BsonString(kmsProviderName));
customerMasterKeyCredentials.put("keyName", new BsonString(getEnv("AZURE_KEY_NAME"))); // Your Azure Key Vault Endpoint
customerMasterKeyCredentials.put("keyVaultEndpoint", new BsonString(getEnv("AZURE_KEY_VAULT_ENDPOINT"))); // Your Azure Key Name

customerMasterKeyCredentials = {
  keyVaultEndpoint: process.env.AZURE_KEY_VAULT_ENDPOINT, // Your Azure Key Vault Endpoint
  keyName: process.env.AZURE_KEY_NAME, // Your Azure Key Name
};

customer_master_key_credentials = {
    "keyName": os.environ['AZURE_KEY_NAME'], # Your Azure key name
    "keyVaultEndpoint": os.environ['AZURE_KEY_VAULT_ENDPOINT'] # Your Azure key vault endpoint
}

Set Your Automatic Encryption Options

Create an autoEncryptionOptions object that contains the following options:

The namespace of your Key Vault collection
The kmsProviderCredentials object, which contains your Azure KMS credentials

const autoEncryptionOptions = {
  keyVaultNamespace: keyVaultNamespace,
  kmsProviders: kmsProviderCredentials,
};

Create an AutoEncryptionOptions object that contains the following options:

The namespace of your Key Vault collection
The kmsProviderCredentials object, which contains your Azure KMS credentials
The extraOptions object, which contains the path to your Automatic Encryption Shared Library

var extraOptions = new Dictionary<string, object>
{
    { "cryptSharedLibPath", _appSettings["CryptSharedLibPath"] } // Path to your Automatic Encryption Shared Library
};
var autoEncryptionOptions = new AutoEncryptionOptions(
    keyVaultNamespace,
    kmsProviderCredentials,
    extraOptions: extraOptions);

Create an AutoEncryption object that contains the following options:

The namespace of your Key Vault collection
The kmsProviderCredentials object, which contains your Azure KMS credentials
The cryptSharedLibraryPath object, which contains the path to your Automatic Encryption Shared Library

cryptSharedLibraryPath := map[string]interface{}{
	"cryptSharedLibPath": os.Getenv("SHARED_LIB_PATH"), // Path to your Automatic Encryption Shared Library
}
autoEncryptionOptions := options.AutoEncryption().
	SetKeyVaultNamespace(keyVaultNamespace).
	SetKmsProviders(kmsProviderCredentials).
	SetExtraOptions(cryptSharedLibraryPath)

Create an AutoEncryptionSettings object that contains the following options:

The namespace of your Key Vault collection
The kmsProviderCredentials object, which contains your Azure KMS credentials
The extraOptions object, which contains the path to your Automatic Encryption Shared Library

Map<String, Object> extraOptions = new HashMap<String, Object>();
extraOptions.put("cryptSharedLibPath", getEnv("SHARED_LIB_PATH")); // Path to your Automatic Encryption Shared Library
AutoEncryptionSettings autoEncryptionSettings = AutoEncryptionSettings.builder()
        .keyVaultNamespace(keyVaultNamespace)
        .kmsProviders(kmsProviderCredentials)
        .extraOptions(extraOptions)
        .build();

Create an autoEncryptionOptions object that contains the following options:

The namespace of your Key Vault collection
The kmsProviders object, which contains your Azure KMS credentials
The sharedLibraryPathOptions object, which contains the path to your Automatic Encryption Shared Library

const extraOptions = {
  cryptSharedLibPath: process.env.SHARED_LIB_PATH, // Path to your Automatic Encryption Shared Library
};
const autoEncryptionOptions = {
  keyVaultNamespace,
  kmsProviders,
  extraOptions,
};

Create an AutoEncryptionOpts object that contains the following options:

The kms_provider_credentials object, which contains your Azure KMS credentials
The namespace of your Key Vault collection
The path to your Automatic Encryption Shared Library

auto_encryption_options = AutoEncryptionOpts(
    kms_provider_credentials,
    key_vault_namespace,
    crypt_shared_lib_path=os.environ['SHARED_LIB_PATH'] # Path to your Automatic Encryption Shared Library>
)

Note

Automatic Encryption Options

The automatic encryption options provide configuration information to the Automatic Encryption Shared Library, which modifies the application's behavior when accessing encrypted fields.

To learn more about the Automatic Encryption Shared Library, see the Automatic Encryption Shared Library for Queryable Encryption page.

Create a Client to Set Up an Encrypted Collection

To create a client used to encrypt and decrypt data in your collection, instantiate a new MongoClient by using your connection URI and your automatic encryption options.

const encryptedClient = Mongo(uri, autoEncryptionOptions);

var clientSettings = MongoClientSettings.FromConnectionString(uri);
clientSettings.AutoEncryptionOptions = qeHelpers.GetAutoEncryptionOptions(
    keyVaultNamespace,
    kmsProviderCredentials);
var encryptedClient = new MongoClient(clientSettings);

encryptedClient, err := mongo.Connect(
	context.TODO(),
	options.Client().ApplyURI(uri).SetAutoEncryptionOptions(autoEncryptionOptions),
)
if err != nil {
	panic(fmt.Sprintf("Unable to connect to MongoDB: %v\n", err))
}
defer func() {
	_ = encryptedClient.Disconnect(context.TODO())
}()

MongoClientSettings clientSettings = MongoClientSettings.builder()
        .applyConnectionString(new ConnectionString(uri))
        .autoEncryptionSettings(autoEncryptionSettings)
        .build();
try (MongoClient encryptedClient = MongoClients.create(clientSettings)) {

const encryptedClient = new MongoClient(uri, {
  autoEncryption: autoEncryptionOptions,
});

encrypted_client = MongoClient(
    uri, auto_encryption_opts=auto_encryption_options)

Specify Fields to Encrypt

To encrypt a field, add it to the encryption schema. To enable queries on a field, add the "queries" property. Create the encryption schema as follows:

const encryptedFieldsMap = {
  encryptedFields: {
    fields: [
      {
        path: "patientRecord.ssn",
        bsonType: "string",
        queries: { queryType: "equality" },
      },
      {
        path: "patientRecord.billing",
        bsonType: "object",
      },
    ],
  },
};

var encryptedFields = new BsonDocument
{
    {
        "fields", new BsonArray
        {
            new BsonDocument
            {
                { "keyId", BsonNull.Value },
                { "path", "record.ssn" },
                { "bsonType", "string" },
                { "queries", new BsonDocument("queryType", "equality") }
            },
            new BsonDocument
            {
                { "keyId", BsonNull.Value },
                { "path", "record.billing" },
                { "bsonType", "object" }
            }
        }
    }
};

encryptedFieldsMap := bson.M{
	"fields": []bson.M{
		bson.M{
			"keyId":    nil,
			"path":     "patientRecord.ssn",
			"bsonType": "string",
			"queries": []bson.M{
				{
					"queryType": "equality",
				},
			},
		},
		bson.M{
			"keyId":    nil,
			"path":     "patientRecord.billing",
			"bsonType": "object",
		},
	},
}

BsonDocument encryptedFieldsMap = new BsonDocument().append("fields",
        new BsonArray(Arrays.asList(
                new BsonDocument()
                        .append("keyId", new BsonNull())
                        .append("path", new BsonString("patientRecord.ssn"))
                        .append("bsonType", new BsonString("string"))
                        .append("queries", new BsonDocument()
                                .append("queryType", new BsonString("equality"))),
                new BsonDocument()
                        .append("keyId", new BsonNull())
                        .append("path", new BsonString("patientRecord.billing"))
                        .append("bsonType", new BsonString("object")))));

const encryptedFieldsMap = {
  encryptedFields: {
    fields: [
      {
        path: "patientRecord.ssn",
        bsonType: "string",
        queries: { queryType: "equality" },
      },
      {
        path: "patientRecord.billing",
        bsonType: "object",
      },
    ],
  },
};

encrypted_fields_map = {
    "fields": [
        {
            "path": "patientRecord.ssn",
            "bsonType": "string",
            "queries": [{"queryType": "equality"}]
        },
        {
            "path": "patientRecord.billing",
            "bsonType": "object",
        }
    ]
}

Note

In the previous code sample, both the "ssn" and "billing" fields are encrypted, but only the "ssn" field can be queried.

Create the Collection

Instantiate ClientEncryption to access the API for the encryption helper methods.

const clientEncryption = encryptedClient.getClientEncryption()

var clientEncryptionOptions = new ClientEncryptionOptions(
    keyVaultClient: keyVaultClient,
    keyVaultNamespace: keyVaultNamespace,
    kmsProviders: kmsProviderCredentials
);
var clientEncryption = new ClientEncryption(clientEncryptionOptions);

opts := options.ClientEncryption().
	SetKeyVaultNamespace(keyVaultNamespace).
	SetKmsProviders(kmsProviderCredentials)
clientEncryption, err := mongo.NewClientEncryption(encryptedClient, opts)
if err != nil {
	panic(fmt.Sprintf("Unable to create a ClientEncryption instance due to the following error: %s\n", err))
}

ClientEncryptionSettings clientEncryptionSettings = ClientEncryptionSettings.builder()
        .keyVaultMongoClientSettings(MongoClientSettings.builder()
                .applyConnectionString(new ConnectionString(uri))
                .build())
        .keyVaultNamespace(keyVaultNamespace)
        .kmsProviders(kmsProviderCredentials)
        .build();
ClientEncryption clientEncryption = ClientEncryptions.create(clientEncryptionSettings);

const clientEncryption = new ClientEncryption(encryptedClient, autoEncryptionOptions);

client_encryption = ClientEncryption(
    kms_providers=kms_provider_credentials,
    key_vault_namespace=key_vault_namespace,
    key_vault_client=encrypted_client,
    codec_options=CodecOptions(uuid_representation=STANDARD)
)

Create your encrypted collection by using the encryption helper method accessed through the ClientEncryption class. This method automatically generates data encryption keys for your encrypted fields and creates the encrypted collection:

await clientEncryption.createEncryptedCollection(
  encryptedDatabaseName,
  encryptedCollectionName,
  {
    provider: kmsProviderName,
    createCollectionOptions: encryptedFieldsMap,
    masterKey: customerMasterKeyCredentials,
  }
);

The C# version of this tutorial uses separate classes as data models to represent the document structure. Add the following Patient, PatientRecord, and PatientBilling classes to your project:

using MongoDB.Bson;
using MongoDB.Bson.Serialization.Attributes;
[BsonIgnoreExtraElements]
public class Patient
{
    public ObjectId Id { get; set; }
    public string Name { get; set; }
    public PatientRecord Record { get; set; }
}

public class PatientRecord
{
    public string Ssn { get; set; }
    public PatientBilling Billing { get; set; }
}

public class PatientBilling
{
    public string CardType { get; set; }
    public long CardNumber { get; set; }
}

After you've added these classes, create your encrypted collection by using the encryption helper method accessed through the ClientEncryption class. This method automatically generates data encryption keys for your encrypted fields and creates the encrypted collection:

var createCollectionOptions = new CreateCollectionOptions<Patient>
{
    EncryptedFields = encryptedFields
};
clientEncryption.CreateEncryptedCollection(patientDatabase,
    encryptedCollectionName,
    createCollectionOptions,
    kmsProviderName,
    customerMasterKeyCredentials);

Tip

Database vs. Database Name

The method that creates the encrypted collection requires a reference to a database object rather than the database name. You can obtain this reference by using a method on your client object.

The Golang version of this tutorial uses data models to represent the document structure. Add the following structs to your project to represent the data in your collection:

type PatientDocument struct {
	PatientName   string        `bson:"patientName"`
	PatientID     int32         `bson:"patientId"`
	PatientRecord PatientRecord `bson:"patientRecord"`
}

type PatientRecord struct {
	SSN     string      `bson:"ssn"`
	Billing PaymentInfo `bson:"billing"`
}

type PaymentInfo struct {
	Type   string `bson:"type"`
	Number string `bson:"number"`
}

createCollectionOptions := options.CreateCollection().SetEncryptedFields(encryptedFieldsMap)
_, _, err =
	clientEncryption.CreateEncryptedCollection(
		context.TODO(),
		encryptedClient.Database(encryptedDatabaseName),
		encryptedCollectionName,
		createCollectionOptions,
		kmsProviderName,
		customerMasterKey,
	)

Tip

Database vs. Database Name

The method that creates the encrypted collection requires a reference to a database object rather than the database name. You can obtain this reference by using a method on your client object.

CreateCollectionOptions createCollectionOptions = new CreateCollectionOptions().encryptedFields(encryptedFieldsMap);
CreateEncryptedCollectionParams encryptedCollectionParams = new CreateEncryptedCollectionParams(kmsProviderName);
encryptedCollectionParams.masterKey(customerMasterKeyCredentials);
try {
    clientEncryption.createEncryptedCollection(
            encryptedClient.getDatabase(encryptedDatabaseName),
            encryptedCollectionName,
            createCollectionOptions,
            encryptedCollectionParams);
}

Tip

Database vs. Database Name

The method that creates the encrypted collection requires a reference to a database object rather than the database name. You can obtain this reference by using a method on your client object.

Note

Import ClientEncryption

When using the Node.js driver v6.0 and later, you must import ClientEncryption from mongodb.

For earlier driver versions, import ClientEncryption from mongodb-client-encryption.

await clientEncryption.createEncryptedCollection(
  encryptedDatabase,
  encryptedCollectionName,
  {
    provider: kmsProviderName,
    createCollectionOptions: encryptedFieldsMap,
    masterKey: customerMasterKeyCredentials,
  }
);

Tip

Database vs. Database Name

The method that creates the encrypted collection requires a reference to a database object rather than the database name. You can obtain this reference by using a method on your client object.

client_encryption.create_encrypted_collection(
    encrypted_client[encrypted_database_name],
    encrypted_collection_name,
    encrypted_fields_map,
    kms_provider_name,
    customer_master_key_credentials,
)

Tip

Database vs. Database Name

The method that creates the encrypted collection requires a reference to a database object rather than the database name. You can obtain this reference by using a method on your client object.

Insert a Document with Encrypted Fields

Create a sample document that describes a patient's personal information. Use the encrypted client to insert it into the patients collection, as shown in the following example:

const patientDocument = {
  patientName: "Jon Doe",
  patientId: 12345678,
  patientRecord: {
    ssn: "987-65-4320",
    billing: {
      type: "Visa",
      number: "4111111111111111",
    },
  },
};
const encryptedCollection = encryptedClient.getDB(encryptedDatabaseName).getCollection(encryptedCollectionName);
const insertResult = await encryptedCollection.insertOne(patientDocument);

Create a sample document that describes a patient's personal information. Use the encrypted client to insert it into the patients collection, as shown in the following example:

var patient = new Patient
{
    Name = "Jon Doe",
    Id = new ObjectId(),
    Record = new PatientRecord
    {
        Ssn = "987-65-4320",
        Billing = new PatientBilling
        {
            CardType = "Visa",
            CardNumber = 4111111111111111
        }
    }
};
var encryptedCollection = encryptedClient.GetDatabase(encryptedDatabaseName).
    GetCollection<Patient>(encryptedCollectionName);
encryptedCollection.InsertOne(patient);

Create a sample document that describes a patient's personal information. Use the encrypted client to insert it into the patients collection, as shown in the following example:

patientDocument := &PatientDocument{
	PatientName: "John Doe",
	PatientID:   12345678,
	PatientRecord: PatientRecord{
		SSN: "987-65-4320",
		Billing: PaymentInfo{
			Type:   "Visa",
			Number: "4111111111111111",
		},
	},
}
coll := encryptedClient.Database(encryptedDatabaseName).Collection(encryptedCollectionName)
_, err = coll.InsertOne(context.TODO(), patientDocument)
if err != nil {
	panic(fmt.Sprintf("Unable to insert the patientDocument: %s", err))
}

This tutorial uses POJOs as data models to represent the document structure. To set up your application to use POJOs, add the following code:

CodecProvider pojoCodecProvider = PojoCodecProvider.builder().automatic(true).build();
CodecRegistry pojoCodecRegistry = fromRegistries(getDefaultCodecRegistry(), fromProviders(pojoCodecProvider));

To learn more about Java POJOs, see the Plain Old Java Object wikipedia article.

This tutorial uses the following POJOs:

Patient
PatientRecord
PatientBilling

You can view these classes in the models package of the complete Java application.

Add these POJO classes to your application. Then, create an instance of a Patient that describes a patient's personal information. Use the encrypted client to insert it into the patients collection, as shown in the following example:

MongoDatabase encryptedDb = encryptedClient.getDatabase(encryptedDatabaseName).withCodecRegistry(pojoCodecRegistry);
MongoCollection<Patient> collection = encryptedDb.getCollection(encryptedCollectionName, Patient.class);
PatientBilling patientBilling = new PatientBilling("Visa", "4111111111111111");
PatientRecord patientRecord = new PatientRecord("987-65-4320", patientBilling);
Patient patientDocument = new Patient("Jon Doe", patientRecord);
InsertOneResult result = collection.insertOne(patientDocument);

Create a sample document that describes a patient's personal information. Use the encrypted client to insert it into the patients collection, as shown in the following example:

const patientDocument = {
  patientName: "Jon Doe",
  patientId: 12345678,
  patientRecord: {
    ssn: "987-65-4320",
    billing: {
      type: "Visa",
      number: "4111111111111111",
    },
  },
};
const encryptedCollection = encryptedClient
  .db(encryptedDatabaseName)
  .collection(encryptedCollectionName);
const result = await encryptedCollection.insertOne(patientDocument);

Create a sample document that describes a patient's personal information. Use the encrypted client to insert it into the patients collection, as shown in the following example:

patient_document = {
    "patientName": "Jon Doe",
    "patientId": 12345678,
    "patientRecord": {
        "ssn": "987-65-4320",
        "billing": {
            "type": "Visa",
            "number": "4111111111111111",
        },
    },
}
encrypted_collection = encrypted_client[encrypted_database_name][encrypted_collection_name]
result = encrypted_collection.insert_one(patient_document)

Query on an Encrypted Field

The following code sample executes a find query on an encrypted field and prints the decrypted data:

const findResult = await encryptedCollection.findOne({
  "patientRecord.ssn": "987-65-4320",
});
console.log(findResult);

var ssnFilter = Builders<Patient>.Filter.Eq("record.ssn", patient.Record.Ssn);
var findResult = await encryptedCollection.Find(ssnFilter).ToCursorAsync();
Console.WriteLine(findResult.FirstOrDefault().ToJson());

var findResult PatientDocument
err = coll.FindOne(
	context.TODO(),
	bson.M{"patientRecord.ssn": "987-65-4320"},
).Decode(&findResult)

Patient findResult = collection.find(
    new BsonDocument()
            .append("patientRecord.ssn", new BsonString("987-65-4320")))
            .first();
 
System.out.println(findResult);

const findResult = await encryptedCollection.findOne({
  "patientRecord.ssn": "987-65-4320",
});
console.log(findResult);

find_result = encrypted_collection.find_one({
    "patientRecord.ssn": "987-65-4320"
})
print(find_result)

The output of the preceding code sample should look similar to the following:

{
  "_id": {
    "$oid": "648b384a722cb9b8392df76a"
  },
  "name": "Jon Doe",
  "record": {
    "ssn": "987-65-4320",
    "billing": {
      "type": "Visa",
      "number": "4111111111111111"
    }
  },
  "__safeContent__": [
    {
      "$binary": {
        "base64": "L1NsYItk0Sg+oL66DBj6IYHbX7tveANQyrU2cvMzD9Y=",
        "subType": "00"
      }
    }
  ]
}

Warning

Do not Modify the safeContent Field

The __safeContent__ field is essential to Queryable Encryption. Do not modify the contents of this field.

Learn More

To learn how Queryable Encryption works, see Fundamentals.

To learn more about the topics mentioned in this guide, see the following links:

Learn more about Queryable Encryption components on the Reference page.
Learn how Customer Master Keys and Data Encryption Keys work on the Keys and Key Vaults page.
See how KMS Providers manage your Queryable Encryption keys on the KMS Providers page.

Back

Use AWS

Use GCP

Overview

Tip

Customer Master Keys

Before You Get Started

Tip

See: Full Application

Set Up the KMS

Register your Application with Azure

Log in to Azure.

Register your Application with Azure Active Directory

Important

Record your Credentials

Important

Record your Credentials

Important

Record your Credentials

Important

Record your Credentials

Important

Record your Credentials

Important

Record your Credentials

Create the Customer Master Key

Create your Azure Key Vault and Customer Master Key

Important

Record your Credentials

Grant Permissions

Create the Application

Assign Your Application Variables

Important

Key Vault Collection Namespace Permissions

Tip

Environment Variables

Tip

Environment Variables

Tip

Environment Variables

Tip

Environment Variables

Tip

Environment Variables

Tip

Environment Variables

Create your Encrypted Collection

Add Your Azure KMS Credentials

Add your Customer Master Key Credentials

Set Your Automatic Encryption Options

Note

Automatic Encryption Options

Create a Client to Set Up an Encrypted Collection

Specify Fields to Encrypt

Note

Create the Collection

Tip

Database vs. Database Name

Tip

Database vs. Database Name

Tip

Database vs. Database Name

Note

Import ClientEncryption

Tip

Database vs. Database Name

Tip

Database vs. Database Name

Insert a Document with Encrypted Fields

Query on an Encrypted Field

Warning

Do not Modify the __safeContent__ Field

Learn More

Do not Modify the safeContent Field