POST /#X-Amz-Target=TrentService.UpdateCustomKeyStore

Changes the properties of a custom key store. You can use this operation to change the properties of an CloudHSM key store or an external key store.

Use the required CustomKeyStoreId parameter to identify the custom key store. Use the remaining optional parameters to change its properties. This operation does not return any property values. To verify the updated property values, use the DescribeCustomKeyStores operation.

This operation is part of the custom key stores feature in KMS, which combines the convenience and extensive integration of KMS with the isolation and control of a key store that you own and manage.

When updating the properties of an external key store, verify that the updated settings connect your key store, via the external key store proxy, to the same external key manager as the previous settings, or to a backup or snapshot of the external key manager with the same cryptographic keys. If the updated connection settings fail, you can fix them and retry, although an extended delay might disrupt Amazon Web Services services. However, if KMS permanently loses its access to cryptographic keys, ciphertext encrypted under those keys is unrecoverable.

For external key stores:

Some external key managers provide a simpler method for updating an external key store. For details, see your external key manager documentation.

When updating an external key store in the KMS console, you can upload a JSON-based proxy configuration file with the desired values. You cannot upload the proxy configuration file to the UpdateCustomKeyStore operation. However, you can use the file to help you determine the correct values for the UpdateCustomKeyStore parameters.

For an CloudHSM key store, you can use this operation to change the custom key store friendly name (NewCustomKeyStoreName), to tell KMS about a change to the kmsuser crypto user password (KeyStorePassword), or to associate the custom key store with a different, but related, CloudHSM cluster (CloudHsmClusterId). To update any property of an CloudHSM key store, the ConnectionState of the CloudHSM key store must be DISCONNECTED.

For an external key store, you can use this operation to change the custom key store friendly name (NewCustomKeyStoreName), or to tell KMS about a change to the external key store proxy authentication credentials (XksProxyAuthenticationCredential), connection method (XksProxyConnectivity), external proxy endpoint (XksProxyUriEndpoint) and path (XksProxyUriPath). For external key stores with an XksProxyConnectivity of VPC_ENDPOINT_SERVICE, you can also update the Amazon VPC endpoint service name (XksProxyVpcEndpointServiceName). To update most properties of an external key store, the ConnectionState of the external key store must be DISCONNECTED. However, you can update the CustomKeyStoreName, XksProxyAuthenticationCredential, and XksProxyUriPath of an external key store when it is in the CONNECTED or DISCONNECTED state.

If your update requires a DISCONNECTED state, before using UpdateCustomKeyStore, use the DisconnectCustomKeyStore operation to disconnect the custom key store. After the UpdateCustomKeyStore operation completes, use the ConnectCustomKeyStore to reconnect the custom key store. To find the ConnectionState of the custom key store, use the DescribeCustomKeyStores operation.

Before updating the custom key store, verify that the new values allow KMS to connect the custom key store to its backing key store. For example, before you change the XksProxyUriPath value, verify that the external key store proxy is reachable at the new path.

If the operation succeeds, it returns a JSON object with no properties.

Cross-account use: No. You cannot perform this operation on a custom key store in a different Amazon Web Services account.

Required permissions: kms:UpdateCustomKeyStore (IAM policy)

Related operations:

ConnectCustomKeyStore
CreateCustomKeyStore
DeleteCustomKeyStore
DescribeCustomKeyStores
DisconnectCustomKeyStore

Servers

https://kms.{region}.amazonaws.com
https://kms.{region}.amazonaws.com.cn

Request headers

Name	Type	Required	Description
`X-Amz-Content-Sha256`	String	No
`X-Amz-Credential`	String	No
`X-Amz-Target`	String	Yes	Valid values: `"TrentService.UpdateCustomKeyStore"`
`Content-Type`	String	Yes	The media type of the request body. Default value: "application/json"
`X-Amz-Date`	String	No
`X-Amz-Algorithm`	String	No
`X-Amz-SignedHeaders`	String	No
`X-Amz-Security-Token`	String	No
`X-Amz-Signature`	String	No

Request body fields

Name	Type	Required	Description
`XksProxyUriPath`	String	No	Changes the base path to the proxy APIs for this external key store. To find this value, see the documentation for your external key manager and external key store proxy (XKS proxy). This parameter is valid only for custom key stores with a `CustomKeyStoreType` of `EXTERNAL_KEY_STORE`. The value must start with `/` and must end with `/kms/xks/v1`, where `v1` represents the version of the KMS external key store proxy API. You can include an optional prefix between the required elements such as `/example/kms/xks/v1`. The combined `XksProxyUriEndpoint` and `XksProxyUriPath` values must be unique in the Amazon Web Services account and Region. You can change this value when the external key store is connected or disconnected.
`CustomKeyStoreId`	String	Yes	Identifies the custom key store that you want to update. Enter the ID of the custom key store. To find the ID of a custom key store, use the DescribeCustomKeyStores operation.
`XksProxyVpcEndpointServiceName`	String	No	Changes the name that KMS uses to identify the Amazon VPC endpoint service for your external key store proxy (XKS proxy). This parameter is valid when the `CustomKeyStoreType` is `EXTERNAL_KEY_STORE` and the `XksProxyConnectivity` is `VPC_ENDPOINT_SERVICE`. To change this value, the external key store must be disconnected.
`NewCustomKeyStoreName`	String	No	Changes the friendly name of the custom key store to the value that you specify. The custom key store name must be unique in the Amazon Web Services account. To change this value, an CloudHSM key store must be disconnected. An external key store can be connected or disconnected.
`CloudHsmClusterId`	String	No	Associates the custom key store with a related CloudHSM cluster. This parameter is valid only for custom key stores with a `CustomKeyStoreType` of `AWS_CLOUDHSM`. Enter the cluster ID of the cluster that you used to create the custom key store or a cluster that shares a backup history and has the same cluster certificate as the original cluster. You cannot use this parameter to associate a custom key store with an unrelated cluster. In addition, the replacement cluster must fulfill the requirements for a cluster associated with a custom key store. To view the cluster certificate of a cluster, use the DescribeClusters operation. To change this value, the CloudHSM key store must be disconnected.
`XksProxyConnectivity`	String	No	Changes the connectivity setting for the external key store. To indicate that the external key store proxy uses a Amazon VPC endpoint service to communicate with KMS, specify `VPC_ENDPOINT_SERVICE`. Otherwise, specify `PUBLIC_ENDPOINT`. If you change the `XksProxyConnectivity` to `VPC_ENDPOINT_SERVICE`, you must also change the `XksProxyUriEndpoint` and add an `XksProxyVpcEndpointServiceName` value. If you change the `XksProxyConnectivity` to `PUBLIC_ENDPOINT`, you must also change the `XksProxyUriEndpoint` and specify a null or empty string for the `XksProxyVpcEndpointServiceName` value. To change this value, the external key store must be disconnected. Valid values: `"PUBLIC_ENDPOINT"` `"VPC_ENDPOINT_SERVICE"`
`KeyStorePassword`	String	No	Enter the current password of the `kmsuser` crypto user (CU) in the CloudHSM cluster that is associated with the custom key store. This parameter is valid only for custom key stores with a `CustomKeyStoreType` of `AWS_CLOUDHSM`. This parameter tells KMS the current password of the `kmsuser` crypto user (CU). It does not set or change the password of any users in the CloudHSM cluster. To change this value, the CloudHSM key store must be disconnected.
`XksProxyUriEndpoint`	String	No	Changes the URI endpoint that KMS uses to connect to your external key store proxy (XKS proxy). This parameter is valid only for custom key stores with a `CustomKeyStoreType` of `EXTERNAL_KEY_STORE`. For external key stores with an `XksProxyConnectivity` value of `PUBLIC_ENDPOINT`, the protocol must be HTTPS. For external key stores with an `XksProxyConnectivity` value of `VPC_ENDPOINT_SERVICE`, specify `https://` followed by the private DNS name associated with the VPC endpoint service. Each external key store must use a different private DNS name. The combined `XksProxyUriEndpoint` and `XksProxyUriPath` values must be unique in the Amazon Web Services account and Region. To change this value, the external key store must be disconnected.

How to start integrating

Add HTTP Task to your workflow definition.
Search for the API you want to integrate with and click on the name.
- This loads the API reference documentation and prepares the Http request settings.
Click Test request to test run your request to the API and see the API's response.