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Creates a friendly name for a KMS key.
Adding, deleting, or updating an alias can allow or deny permission to the KMS key.
For details, see ABAC
for KMS in the Key Management Service Developer Guide.
You can use an alias to identify a KMS key in the KMS console, in the DescribeKey operation and in cryptographic operations, such as Encrypt and GenerateDataKey. You can also change the KMS key that's associated with the alias (UpdateAlias) or delete the alias (DeleteAlias) at any time. These operations don't affect the underlying KMS key.
You can associate the alias with any customer managed key in the same Amazon Web Services Region. Each alias is associated with only one KMS key at a time, but a KMS key can have multiple aliases. A valid KMS key is required. You can't create an alias without a KMS key.
The alias must be unique in the account and Region, but you can have aliases with the same name in different Regions. For detailed information about aliases, see Using aliases in the Key Management Service Developer Guide.
This operation does not return a response. To get the alias that you created, use the ListAliases operation.
The KMS key that you use for this operation must be in a compatible key state. For details, see Key states of KMS keys in the Key Management Service Developer Guide.
Cross-account use: No. You cannot perform this operation on an alias in a different Amazon Web Services account.
Required permissions
kms:CreateAlias on the alias (IAM policy).
kms:CreateAlias on the KMS key (key policy).
For details, see Controlling access to aliases in the Key Management Service Developer Guide.
Related operations:
Eventual consistency: The KMS API follows an eventual consistency model. For more information, see KMS eventual consistency.
This is an asynchronous operation using the standard naming convention for .NET 4.5 or higher. For .NET 3.5 the operation is implemented as a pair of methods using the standard naming convention of BeginCreateAlias and EndCreateAlias.
Namespace: Amazon.KeyManagementService
Assembly: AWSSDK.KeyManagementService.dll
Version: 3.x.y.z
public virtual Task<CreateAliasResponse> CreateAliasAsync( CreateAliasRequest request, CancellationToken cancellationToken )
Container for the necessary parameters to execute the CreateAlias service method.
A cancellation token that can be used by other objects or threads to receive notice of cancellation.
| Exception | Condition |
|---|---|
| AlreadyExistsException | The request was rejected because it attempted to create a resource that already exists. |
| DependencyTimeoutException | The system timed out while trying to fulfill the request. You can retry the request. |
| InvalidAliasNameException | The request was rejected because the specified alias name is not valid. |
| KMSInternalException | The request was rejected because an internal exception occurred. The request can be retried. |
| KMSInvalidStateException | The request was rejected because the state of the specified resource is not valid for this request. This exceptions means one of the following: The key state of the KMS key is not compatible with the operation. To find the key state, use the DescribeKey operation. For more information about which key states are compatible with each KMS operation, see Key states of KMS keys in the Key Management Service Developer Guide. For cryptographic operations on KMS keys in custom key stores, this exception represents a general failure with many possible causes. To identify the cause, see the error message that accompanies the exception. |
| LimitExceededException | The request was rejected because a quota was exceeded. For more information, see Quotas in the Key Management Service Developer Guide. |
| NotFoundException | The request was rejected because the specified entity or resource could not be found. |
.NET Core App:
Supported in: 3.1
.NET Standard:
Supported in: 2.0
.NET Framework:
Supported in: 4.5