xksProxyAuthenticationCredential

Changes the credentials that KMS uses to sign requests to the external key store proxy (XKS proxy). This parameter is valid only for custom key stores with a CustomKeyStoreType of EXTERNAL_KEY_STORE.

You must specify both the AccessKeyId and SecretAccessKey value in the authentication credential, even if you are only updating one value.

This parameter doesn't establish or change your authentication credentials on the proxy. It just tells KMS the credential that you established with your external key store proxy. For example, if you rotate the credential on your external key store proxy, you can use this parameter to update the credential in KMS.

You can change this value when the external key store is connected or disconnected.