---
title: "POST /#X-Amz-Target=TrentService.GetParametersForImport"
method: POST
path: "/#X-Amz-Target=TrentService.GetParametersForImport"
---

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

`POST /#X-Amz-Target=TrentService.GetParametersForImport`

Returns the items you need to import key material into a symmetric encryption KMS key. For more information about importing key material into KMS, see [Importing key material](https://docs.aws.amazon.com/kms/latest/developerguide/importing-keys.html) in the _Key Management Service Developer Guide_.

This operation returns a public key and an import token. Use the public key to encrypt the symmetric key material. Store the import token to send with a subsequent ImportKeyMaterial request.

You must specify the key ID of the symmetric encryption KMS key into which you will import key material. The KMS key `Origin` must be `EXTERNAL`. You must also specify the wrapping algorithm and type of wrapping key (public key) that you will use to encrypt the key material. You cannot perform this operation on an asymmetric KMS key, an HMAC KMS key, or on any KMS key in a different Amazon Web Services account.

To import key material, you must use the public key and import token from the same response. These items are valid for 24 hours. The expiration date and time appear in the `GetParametersForImport` response. You cannot use an expired token in an ImportKeyMaterial request. If your key and token expire, send another `GetParametersForImport` request.

The KMS key that you use for this operation must be in a compatible key state. For details, see [Key states of KMS keys](https://docs.aws.amazon.com/kms/latest/developerguide/key-state.html) 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](https://docs.aws.amazon.com/kms/latest/developerguide/kms-api-permissions-reference.html) (key policy)

**Related operations:**

*   ImportKeyMaterial
    
*   DeleteImportedKeyMaterial

## Headers

- `X-Amz-Target` 'TrentService.GetParametersForImport', required

## Request body

- GetParametersForImportRequest
  - `KeyId` string, required — <p>The identifier of the symmetric encryption KMS key into which you will import key material. The <code>Origin</code> of the KMS key must be <code>EXTERNAL</code>.</p> <p>Specify the key ID or key ARN of the KMS key.</p> <p>For example:</p> <ul> <li> <p>Key ID: <code>1234abcd-12ab-34cd-56ef-1234567890ab</code> </p> </li> <li> <p>Key ARN: <code>arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab</code> </p> </li> </ul> <p>To get the key ID and key ARN for a KMS key, use <a>ListKeys</a> or <a>DescribeKey</a>.</p>
  - `WrappingAlgorithm` 'RSAES_PKCS1_V1_5' | 'RSAES_OAEP_SHA_1' | 'RSAES_OAEP_SHA_256', required — <p>The algorithm you will use to encrypt the key material before using the <a>ImportKeyMaterial</a> operation to import it. For more information, see <a href="https://docs.aws.amazon.com/kms/latest/developerguide/importing-keys-encrypt-key-material.html">Encrypt the key material</a> in the <i>Key Management Service Developer Guide</i>.</p> <important> <p>The <code>RSAES_PKCS1_V1_5</code> wrapping algorithm is deprecated. We recommend that you begin using a different wrapping algorithm immediately. KMS will end support for <code>RSAES_PKCS1_V1_5</code> by October 1, 2023 pursuant to <a href="https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-131Ar2.pdf">cryptographic key management guidance</a> from the National Institute of Standards and Technology (NIST).</p> </important>
  - `WrappingKeySpec` 'RSA_2048', required — The type of wrapping key (public key) to return in the response. Only 2048-bit RSA public keys are supported.

## Response `200`

Success

- GetParametersForImportResponse
  - `KeyId` string — The Amazon Resource Name (<a href="https://docs.aws.amazon.com/kms/latest/developerguide/concepts.html#key-id-key-ARN">key ARN</a>) of the KMS key to use in a subsequent <a>ImportKeyMaterial</a> request. This is the same KMS key specified in the <code>GetParametersForImport</code> request.
  - `ImportToken` string — The import token to send in a subsequent <a>ImportKeyMaterial</a> request.
  - `PublicKey` string, password — The public key to use to encrypt the key material before importing it with <a>ImportKeyMaterial</a>.
  - `ParametersValidTo` string, date-time — The time at which the import token and public key are no longer valid. After this time, you cannot use them to make an <a>ImportKeyMaterial</a> request and you must send another <code>GetParametersForImport</code> request to get new ones.

## Other responses

- `480` — InvalidArnException
- `481` — UnsupportedOperationException
- `482` — DependencyTimeoutException
- `483` — NotFoundException
- `484` — KMSInternalException
- `485` — KMSInvalidStateException

---

[API](https://skmtc.net/aws/apis/kms.md) · [All operations](https://skmtc.net/aws/apis/kms/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/aws/kms/versions/f92d678d2025/schema)