StartDeliveryStreamEncryption - Amazon Kinesis Data Firehose
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Enables server-side encryption (SSE) for the delivery stream.

This operation is asynchronous. It returns immediately. When you invoke it, Kinesis Data Firehose first sets the encryption status of the stream to ENABLING, and then to ENABLED. The encryption status of a delivery stream is the Status property in DeliveryStreamEncryptionConfiguration. If the operation fails, the encryption status changes to ENABLING_FAILED. You can continue to read and write data to your delivery stream while the encryption status is ENABLING, but the data is not encrypted. It can take up to 5 seconds after the encryption status changes to ENABLED before all records written to the delivery stream are encrypted. To find out whether a record or a batch of records was encrypted, check the response elements PutRecord:Encrypted and PutRecordBatch:Encrypted, respectively.

To check the encryption status of a delivery stream, use DescribeDeliveryStream.

Even if encryption is currently enabled for a delivery stream, you can still invoke this operation on it to change the ARN of the CMK or both its type and ARN. If you invoke this method to change the CMK, and the old CMK is of type CUSTOMER_MANAGED_CMK, Kinesis Data Firehose schedules the grant it had on the old CMK for retirement. If the new CMK is of type CUSTOMER_MANAGED_CMK, Kinesis Data Firehose creates a grant that enables it to use the new CMK to encrypt and decrypt data and to manage the grant.

For the KMS grant creation to be successful, Kinesis Data Firehose APIs StartDeliveryStreamEncryption and CreateDeliveryStream should not be called with session credentials that are more than 6 hours old.

If a delivery stream already has encryption enabled and then you invoke this operation to change the ARN of the CMK or both its type and ARN and you get ENABLING_FAILED, this only means that the attempt to change the CMK failed. In this case, encryption remains enabled with the old CMK.

If the encryption status of your delivery stream is ENABLING_FAILED, you can invoke this operation again with a valid CMK. The CMK must be enabled and the key policy mustn't explicitly deny the permission for Kinesis Data Firehose to invoke KMS encrypt and decrypt operations.

You can enable SSE for a delivery stream only if it's a delivery stream that uses DirectPut as its source.

The StartDeliveryStreamEncryption and StopDeliveryStreamEncryption operations have a combined limit of 25 calls per delivery stream per 24 hours. For example, you reach the limit if you call StartDeliveryStreamEncryption 13 times and StopDeliveryStreamEncryption 12 times for the same delivery stream in a 24-hour period.

Request Syntax

{ "DeliveryStreamEncryptionConfigurationInput": { "KeyARN": "string", "KeyType": "string" }, "DeliveryStreamName": "string" }

Request Parameters

The request accepts the following data in JSON format.


Used to specify the type and Amazon Resource Name (ARN) of the KMS key needed for Server-Side Encryption (SSE).

Type: DeliveryStreamEncryptionConfigurationInput object

Required: No


The name of the delivery stream for which you want to enable server-side encryption (SSE).

Type: String

Length Constraints: Minimum length of 1. Maximum length of 64.

Pattern: [a-zA-Z0-9_.-]+

Required: Yes

Response Elements

If the action is successful, the service sends back an HTTP 200 response with an empty HTTP body.


For information about the errors that are common to all actions, see Common Errors.


The specified input parameter has a value that is not valid.

HTTP Status Code: 400


Kinesis Data Firehose throws this exception when an attempt to put records or to start or stop delivery stream encryption fails. This happens when the KMS service throws one of the following exception types: AccessDeniedException, InvalidStateException, DisabledException, or NotFoundException.

HTTP Status Code: 400


You have already reached the limit for a requested resource.

HTTP Status Code: 400


The resource is already in use and not available for this operation.

HTTP Status Code: 400


The specified resource could not be found.

HTTP Status Code: 400


To start server-side encryption for a stream

The following JSON example starts server-side encryption (SSE) for the specified stream.

Sample Request

POST / HTTP/1.1 Host: firehose.<region>.<domain> Content-Length: <PayloadSizeBytes> User-Agent: <UserAgentString> Content-Type: application/x-amz-json-1.1 Authorization: <AuthParams> Connection: Keep-Alive X-Amz-Date: <Date> X-Amz-Target: Firehose_20150804.StartDeliveryStreamEncryption { "DeliveryStreamName": "exampleDeliveryStreamName" }

Sample Response

HTTP/1.1 200 OK x-amzn-RequestId: <RequestId> Content-Type: application/x-amz-json-1.1 Content-Length: <PayloadSizeBytes> Date: <Date>

See Also

For more information about using this API in one of the language-specific Amazon SDKs, see the following: