GetParametersForImport (smaws-clients.Smaws_Client

val request : 
  Smaws_Lib.Context.t ->
  get_parameters_for_import_request ->
  (get_parameters_for_import_response,
    [> Smaws_Lib.Protocols.AwsJson.error
    | `DependencyTimeoutException of dependency_timeout_exception
    | `InvalidArnException of invalid_arn_exception
    | `KMSInternalException of kms_internal_exception
    | `KMSInvalidStateException of kms_invalid_state_exception
    | `NotFoundException of not_found_exception
    | `UnsupportedOperationException of unsupported_operation_exception ])
    Stdlib.result

Returns the public key and an import token you need to import or reimport key material for a KMS key.

By default, KMS keys are created with key material that KMS generates. This operation supports Importing key material, an advanced feature that lets you generate and import the cryptographic key material for a KMS key. For more information about importing key material into KMS, see Importing key material in the Key Management Service Developer Guide.

Before calling GetParametersForImport, use the CreateKey operation with an Origin value of EXTERNAL to create a KMS key with no key material. You can import key material for a symmetric encryption KMS key, HMAC KMS key, asymmetric encryption KMS key, or asymmetric signing KMS key. You can also import key material into a multi-Region key of any supported type. However, you can't import key material into a KMS key in a custom key store. You can also use GetParametersForImport to get a public key and import token to reimport the original key material into a KMS key whose key material expired or was deleted.

GetParametersForImport returns the items that you need to import your key material.

The public key (or "wrapping key") of an RSA key pair that KMS generates.
You will use this public key to encrypt ("wrap") your key material while it's in transit to KMS.
A import token that ensures that KMS can decrypt your key material and associate it with the correct KMS key.

The public key and its import token are permanently linked and must be used together. Each public key and import token set is valid for 24 hours. The expiration date and time appear in the ParametersValidTo field in the GetParametersForImport response. You cannot use an expired public key or import token in an ImportKeyMaterial request. If your key and token expire, send another GetParametersForImport request.

GetParametersForImport requires the following information:

The key ID of the KMS key for which you are importing the key material.
The key spec of the public key ("wrapping key") that you will use to encrypt your key material during import.
The wrapping algorithm that you will use with the public key to encrypt your key material.

You can use the same or a different public key spec and wrapping algorithm each time you import or reimport the same key material.

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 a KMS key in a different Amazon Web Services account.

Required permissions: kms:GetParametersForImport (key policy)

Related operations:

ImportKeyMaterial
DeleteImportedKeyMaterial

Eventual consistency: The KMS API follows an eventual consistency model. For more information, see KMS eventual consistency.