AWS SDK Version 3 for .NET
API Reference

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Container for the parameters to the CreateKey operation. Creates a customer master key (CMK) in the caller's AWS account.

You can use a CMK to encrypt small amounts of data (4 KiB or less) directly. But CMKs are more commonly used to encrypt data encryption keys (DEKs), which are used to encrypt raw data. For more information about DEKs and the difference between CMKs and DEKs, see the following:

You cannot use this operation to create a CMK in a different AWS account.

Inheritance Hierarchy

System.Object
  Amazon.Runtime.AmazonWebServiceRequest
    Amazon.KeyManagementService.AmazonKeyManagementServiceRequest
      Amazon.KeyManagementService.Model.CreateKeyRequest

Namespace: Amazon.KeyManagementService.Model
Assembly: AWSSDK.KeyManagementService.dll
Version: 3.x.y.z

Syntax

C#
public class CreateKeyRequest : AmazonKeyManagementServiceRequest
         IAmazonWebServiceRequest

The CreateKeyRequest type exposes the following members

Constructors

NameDescription
Public Method CreateKeyRequest()

Properties

NameTypeDescription
Public Property BypassPolicyLockoutSafetyCheck System.Boolean

Gets and sets the property BypassPolicyLockoutSafetyCheck.

A flag to indicate whether to bypass the key policy lockout safety check.

Setting this value to true increases the risk that the CMK becomes unmanageable. Do not set this value to true indiscriminately.

For more information, refer to the scenario in the Default Key Policy section in the AWS Key Management Service Developer Guide.

Use this parameter only when you include a policy in the request and you intend to prevent the principal that is making the request from making a subsequent PutKeyPolicy request on the CMK.

The default value is false.

Public Property Description System.String

Gets and sets the property Description.

A description of the CMK.

Use a description that helps you decide whether the CMK is appropriate for a task.

Public Property KeyUsage Amazon.KeyManagementService.KeyUsageType

Gets and sets the property KeyUsage.

The intended use of the CMK.

You can use CMKs only for symmetric encryption and decryption.

Public Property Origin Amazon.KeyManagementService.OriginType

Gets and sets the property Origin.

The source of the CMK's key material.

The default is AWS_KMS, which means AWS KMS creates the key material. When this parameter is set to EXTERNAL, the request creates a CMK without key material so that you can import key material from your existing key management infrastructure. For more information about importing key material into AWS KMS, see Importing Key Material in the AWS Key Management Service Developer Guide.

The CMK's Origin is immutable and is set when the CMK is created.

Public Property Policy System.String

Gets and sets the property Policy.

The key policy to attach to the CMK.

If you provide a key policy, it must meet the following criteria:

  • If you don't set BypassPolicyLockoutSafetyCheck to true, the key policy must allow the principal that is making the CreateKey request to make a subsequent PutKeyPolicy request on the CMK. This reduces the risk that the CMK becomes unmanageable. For more information, refer to the scenario in the Default Key Policy section of the AWS Key Management Service Developer Guide.

  • Each statement in the key policy must contain one or more principals. The principals in the key policy must exist and be visible to AWS KMS. When you create a new AWS principal (for example, an IAM user or role), you might need to enforce a delay before including the new principal in a key policy. The reason for this is that the new principal might not be immediately visible to AWS KMS. For more information, see Changes that I make are not always immediately visible in the AWS Identity and Access Management User Guide.

If you do not provide a key policy, AWS KMS attaches a default key policy to the CMK. For more information, see Default Key Policy in the AWS Key Management Service Developer Guide.

The key policy size limit is 32 kilobytes (32768 bytes).

Public Property Tags System.Collections.Generic.List<Amazon.KeyManagementService.Model.Tag>

Gets and sets the property Tags.

One or more tags. Each tag consists of a tag key and a tag value. Tag keys and tag values are both required, but tag values can be empty (null) strings.

Use this parameter to tag the CMK when it is created. Alternately, you can omit this parameter and instead tag the CMK after it is created using TagResource.

Examples

The following example creates a CMK.

To create a customer master key (CMK)


var response = client.CreateKey(new CreateKeyRequest 
{
    Tags = new List {
        new Tag {
            TagKey = "CreatedBy",
            TagValue = "ExampleUser"
        }
    } // One or more tags. Each tag consists of a tag key and a tag value.
});

KeyMetadata keyMetadata = response.KeyMetadata; // An object that contains information about the CMK created by this operation.

            

Version Information

.NET Standard:
Supported in: 1.3

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms