Menu
AWS Key Management Service
API Reference (API Version 2014-11-01)

CreateAlias

Creates a display name for a customer master key. An alias can be used to identify a key and should be unique. The console enforces a one-to-one mapping between the alias and a key. An alias name can contain only alphanumeric characters, forward slashes (/), underscores (_), and dashes (-). An alias must start with the word "alias" followed by a forward slash (alias/). An alias that begins with "aws" after the forward slash (alias/aws...) is reserved by Amazon Web Services (AWS).

The alias and the key it is mapped to must be in the same AWS account and the same region.

To map an alias to a different key, call UpdateAlias.

Request Syntax

Copy
{ "AliasName": "string", "TargetKeyId": "string" }

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.

Note

In the following list, the required parameters are described first.

AliasName

String that contains the display name. The name must start with the word "alias" followed by a forward slash (alias/). Aliases that begin with "alias/AWS" are reserved.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 256.

Pattern: ^[a-zA-Z0-9:/_-]+$

Required: Yes

TargetKeyId

An identifier of the key for which you are creating the alias. This value cannot be another alias but can be a globally unique identifier or a fully specified ARN to a key.

  • Key ARN Example - arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012

  • Globally Unique Key ID Example - 12345678-1234-1234-1234-123456789012

Type: String

Length Constraints: Minimum length of 1. Maximum length of 2048.

Required: Yes

Response Elements

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

Errors

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

AlreadyExistsException

The request was rejected because it attempted to create a resource that already exists.

HTTP Status Code: 400

DependencyTimeoutException

The system timed out while trying to fulfill the request. The request can be retried.

HTTP Status Code: 500

InvalidAliasNameException

The request was rejected because the specified alias name is not valid.

HTTP Status Code: 400

KMSInternalException

The request was rejected because an internal exception occurred. The request can be retried.

HTTP Status Code: 400

KMSInvalidStateException

The request was rejected because the state of the specified resource is not valid for this request.

For more information about how key state affects the use of a CMK, see How Key State Affects Use of a Customer Master Key in the AWS Key Management Service Developer Guide.

HTTP Status Code: 400

LimitExceededException

The request was rejected because a limit was exceeded. For more information, see Limits in the AWS Key Management Service Developer Guide.

HTTP Status Code: 400

NotFoundException

The request was rejected because the specified entity or resource could not be found.

HTTP Status Code: 400

Examples

Example Request

The following example is formatted for legibility.

Copy
POST / HTTP/1.1 Host: kms.us-west-2.amazonaws.com Content-Length: 87 X-Amz-Target: TrentService.CreateAlias X-Amz-Date: 20160517T204220Z Content-Type: application/x-amz-json-1.1 Authorization: AWS4-HMAC-SHA256\ Credential=AKIAI44QH8DHBEXAMPLE/20160517/us-west-2/kms/aws4_request,\ SignedHeaders=content-type;host;x-amz-date;x-amz-target,\ Signature=ca7bcf1e8d5364dc3f0d881c05bdadf36f498c6c6a8b576a060142d9b2199123 { "TargetKeyId": "1234abcd-12ab-34cd-56ef-1234567890ab", "AliasName": "alias/ExampleAlias" }

Example Response

Copy
HTTP/1.1 200 OK Server: Server Date: Tue, 17 May 2016 20:42:25 GMT Content-Type: application/x-amz-json-1.1 Content-Length: 0 Connection: keep-alive x-amzn-RequestId: dcb07ca7-1c6f-11e6-8540-77c363708b91

See Also

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