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customerMasterKeyPath = "customer-master-key.txt";
if (!fs.existsSync(customerMasterKeyPath)) {
  fs.writeFileSync(customerMasterKeyPath, crypto.randomBytes(96));
}

using var randomNumberGenerator = RandomNumberGenerator.Create();
try
{
    var bytes = new byte[96];
    randomNumberGenerator.GetBytes(bytes);
    var localCustomerMasterKeyBase64 = Convert.ToBase64String(bytes);
    File.WriteAllText("customer-master-key.txt", localCustomerMasterKeyBase64);
}
catch (Exception e)
{
    throw new Exception("Unable to write Customer Master Key file due to the following error: " + e.Message);
}

key := make([]byte, 96)
if _, err := rand.Read(key); err != nil {
	panic(fmt.Sprintf("Unable to create a random 96 byte data key: %v\n", err))
}
if err := os.WriteFile("customer-master-key.txt", key, 0644); err != nil {
	panic(fmt.Sprintf("Unable to write key to file: %v\n", err))
}

byte[] localCustomerMasterKey = new byte[96];
new SecureRandom().nextBytes(localCustomerMasterKey);
try (FileOutputStream stream = new FileOutputStream("customer-master-key.txt")) {
    stream.write(localCustomerMasterKey);
    // ...

if (!existsSync("./customer-master-key.txt")) {
  try {
    writeFileSync("customer-master-key.txt", randomBytes(96));
  } catch (err) {
    throw new Error(
      `Unable to write Customer Master Key to file due to the following error: ${err}`
    );
  }
}

path = "customer-master-key.txt"
file_bytes = os.urandom(96)
with open(path, "wb") as f:
    f.write(file_bytes)

// WARNING: Do not use a local key file in a production application
const localMasterKey = fs.readFileSync("./customer-master-key.txt");
kmsProviderCredentials = {
  local: {
    key: localMasterKey,
  },
};

// WARNING: Do not use a local key file in a production application
var kmsProviderCredentials = new Dictionary<string, IReadOnlyDictionary<string, object>>();
try
{
    var localCustomerMasterKeyBase64 = File.ReadAllText("customer-master-key.txt");
    var localCustomerMasterKeyBytes = Convert.FromBase64String(localCustomerMasterKeyBase64);
    var localOptions = new Dictionary<string, object>
    {
        { "key", localCustomerMasterKeyBytes }
    };
    kmsProviderCredentials.Add(kmsProvider, localOptions);
}

key, err := os.ReadFile("customer-master-key.txt")
if err != nil {
	panic(fmt.Sprintf("Could not read the Customer Master Key: %v", err))
}
kmsProviderCredentials := map[string]map[string]interface{}{"local": {"key": key}}

byte[] localCustomerMasterKey = new byte[96];
try (FileInputStream fis = new FileInputStream("customer-master-key.txt")) {
    if (fis.read(localCustomerMasterKey) < 96)
        throw new Exception("Expected to read 96 bytes from the customer master key file");
} catch (Exception e) {
    throw new Exception("Unable to read the Customer Master Key due to the following error: " + e.getMessage());
}
Map<String, Object> keyMap = new HashMap<String, Object>();
keyMap.put("key", localCustomerMasterKey);
Map<String, Map<String, Object>> kmsProviderCredentials = new HashMap<String, Map<String, Object>>();
kmsProviderCredentials.put("local", keyMap);

// WARNING: Do not use a local key file in a production application
const localMasterKey = readFileSync("./customer-master-key.txt");
kmsProviders = {
  local: {
    key: localMasterKey,
  },
};

path = "./customer-master-key.txt"
with open(path, "rb") as f:
    local_master_key = f.read()
    kms_provider_credentials = {
        "local": {
            "key": local_master_key
        },
    }

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

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

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)

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();

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

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>
)

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)

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",
        }
    ]
}

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)
)

customerMasterKeyCredentials = {};

var customerMasterKeyCredentials = new BsonDocument();

cmkCredentials := map[string]string{}

BsonDocument customerMasterKeyCredentials = new BsonDocument();

customerMasterKeyCredentials = {};

customer_master_key_credentials = {}

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

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; }
}

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

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,
	)

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

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

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