Updated on 2026-06-09 GMT+08:00

Importing Key Materials

Function

This API is used to import key materials.

Calling Method

For details, see Calling APIs.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.

  • If you are using role/policy-based authorization, see Permissions Policies and Supported Actions for details on the required permissions.
  • If you are using identity policy-based authorization, the following identity policy-based permissions are required.

    Action

    Access Level

    Resource Type (*: required)

    Condition Key

    Alias

    Dependencies

    kms:cmk:importMaterial

    Write

    KeyId *

    • kms:KeyOrigin

    • kms:KeySpec

    • kms:KeyUsage

    • kms:MultiRegionKeyType

    • g:EnterpriseProjectId

    • g:ResourceTag/<tag-key>

    -

    -

    -

    kms:ExpirationTime

URI

POST /v1.0/{project_id}/kms/import-key-material

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Definition

Project ID. For details, see Obtaining a Project ID.

Constraints

N/A

Range

The value returned by the IAM API is used, which contains 32 characters.

Default Value

N/A

Request Parameters

Table 2 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

Definition

User token. It can be obtained by calling the IAM API. The value of X-Subject-Token in the response header is the user token.

Constraints

N/A

Range

Obtain the value by calling the IAM API for obtaining the user token.

Default Value

N/A

Table 3 Request body parameters

Parameter

Mandatory

Type

Description

key_id

Yes

String

Definition

Key ID

Constraints

  • The value must be a 36-byte ID.

  • The value must match the regular expression ^[0-9a-z]{8}-[0-9a-z]{4}-[0-9a-z]{4}-[0-9a-z]{4}-[0-9a-z]{12}$.

Range

N/A

Default Value

N/A

import_token

Yes

String

Definition

Key import token in Base64 format

Constraints

  • The value must match the regular expression ^[0-9a-zA-Z+/=]{200,6144}$.

Range

N/A

Default Value

N/A

encrypted_key_material

Yes

String

Definition

Encrypted symmetric key material in Base64 format

Constraints

  • The value must match the regular expression ^[0-9a-zA-Z+/=]{344,360}$.

  • If an asymmetric key is imported, this parameter is used as the temporary intermediate key for private key encryption.

Range

N/A

Default Value

N/A

encrypted_privatekey

No

String

Definition

Private key encrypted using a temporary intermediate key. Specify this parameter if an asymmetric key is imported. The value is in Base64 format.

Constraints

The value must match the regular expression ^[0-9a-zA-Z+/=]{200,6144}$.

Range

N/A

Default Value

N/A

expiration_time

No

Long

Definition

Timestamp when the key material expires, that is, the total number of seconds since January 1, 1970. KMS will delete the key material within 24 hours after it expires.

Constraints

N/A

Range

N/A

Default Value

N/A

sequence

No

String

Definition

A 36-byte serial number of a request message, for example, 919c82d4-8046-4722-9094-35c3c6524cff.

Constraints

N/A

Range

N/A

Default Value

N/A

Response Parameters

Status code: 200

Request succeeded.

None

Example Requests

Import ciphertext key materials to the key whose ID is 0d0466b0-e727-4d9c-b35d-f84bb474a37f.

{
  "key_id" : "0d0466b0-e727-4d9c-b35d-f84bb474a37f",
  "import_token" : "AACIBjY2ZTQxYItNDU4Ny04OTIxLWVhZTVhZjg5NDZm....",
  "encrypted_key_material" : "e0wTU/YJT/HDxsEv2NE+3CKT1..."
}

Example Responses

None

SDK Sample Code

The SDK sample code is as follows.

Import ciphertext key materials to the key whose ID is 0d0466b0-e727-4d9c-b35d-f84bb474a37f.

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package com.huaweicloud.sdk.test;

import com.huaweicloud.sdk.core.auth.ICredential;
import com.huaweicloud.sdk.core.auth.BasicCredentials;
import com.huaweicloud.sdk.core.exception.ConnectionException;
import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
import com.huaweicloud.sdk.core.exception.ServiceResponseException;
import com.huaweicloud.sdk.kms.v2.region.KmsRegion;
import com.huaweicloud.sdk.kms.v2.*;
import com.huaweicloud.sdk.kms.v2.model.*;


public class ImportKeyMaterialSolution {

    public static void main(String[] args) {
        // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        String ak = System.getenv("CLOUD_SDK_AK");
        String sk = System.getenv("CLOUD_SDK_SK");
        String projectId = "{project_id}";

        ICredential auth = new BasicCredentials()
                .withProjectId(projectId)
                .withAk(ak)
                .withSk(sk);

        KmsClient client = KmsClient.newBuilder()
                .withCredential(auth)
                .withRegion(KmsRegion.valueOf("<YOUR REGION>"))
                .build();
        ImportKeyMaterialRequest request = new ImportKeyMaterialRequest();
        ImportKeyMaterialRequestBody body = new ImportKeyMaterialRequestBody();
        body.withEncryptedKeyMaterial("e0wTU/YJT/HDxsEv2NE+3CKT1...");
        body.withImportToken("AACIBjY2ZTQxYItNDU4Ny04OTIxLWVhZTVhZjg5NDZm....");
        body.withKeyId("0d0466b0-e727-4d9c-b35d-f84bb474a37f");
        request.withBody(body);
        try {
            ImportKeyMaterialResponse response = client.importKeyMaterial(request);
            System.out.println(response.toString());
        } catch (ConnectionException e) {
            e.printStackTrace();
        } catch (RequestTimeoutException e) {
            e.printStackTrace();
        } catch (ServiceResponseException e) {
            e.printStackTrace();
            System.out.println(e.getHttpStatusCode());
            System.out.println(e.getRequestId());
            System.out.println(e.getErrorCode());
            System.out.println(e.getErrorMsg());
        }
    }
}

Import ciphertext key materials to the key whose ID is 0d0466b0-e727-4d9c-b35d-f84bb474a37f.

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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import BasicCredentials
from huaweicloudsdkkms.v2.region.kms_region import KmsRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkkms.v2 import *

if __name__ == "__main__":
    # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak = os.environ["CLOUD_SDK_AK"]
    sk = os.environ["CLOUD_SDK_SK"]
    projectId = "{project_id}"

    credentials = BasicCredentials(ak, sk, projectId)

    client = KmsClient.new_builder() \
        .with_credentials(credentials) \
        .with_region(KmsRegion.value_of("<YOUR REGION>")) \
        .build()

    try:
        request = ImportKeyMaterialRequest()
        request.body = ImportKeyMaterialRequestBody(
            encrypted_key_material="e0wTU/YJT/HDxsEv2NE+3CKT1...",
            import_token="AACIBjY2ZTQxYItNDU4Ny04OTIxLWVhZTVhZjg5NDZm....",
            key_id="0d0466b0-e727-4d9c-b35d-f84bb474a37f"
        )
        response = client.import_key_material(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

Import ciphertext key materials to the key whose ID is 0d0466b0-e727-4d9c-b35d-f84bb474a37f.

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package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
    kms "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kms/v2"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kms/v2/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/kms/v2/region"
)

func main() {
    // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
    // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
    ak := os.Getenv("CLOUD_SDK_AK")
    sk := os.Getenv("CLOUD_SDK_SK")
    projectId := "{project_id}"

    auth, err := basic.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        WithProjectId(projectId).
        SafeBuild()

    if err != nil {
        fmt.Println(err)
        return
    }

    hcClient, err := kms.KmsClientBuilder().
         WithRegion(region.ValueOf("<YOUR REGION>")).
         WithCredential(auth).
         SafeBuild()


    if err != nil {
        fmt.Println(err)
        return
    }

    client := kms.NewKmsClient(hcClient)

    request := &model.ImportKeyMaterialRequest{}
	request.Body = &model.ImportKeyMaterialRequestBody{
		EncryptedKeyMaterial: "e0wTU/YJT/HDxsEv2NE+3CKT1...",
		ImportToken: "AACIBjY2ZTQxYItNDU4Ny04OTIxLWVhZTVhZjg5NDZm....",
		KeyId: "0d0466b0-e727-4d9c-b35d-f84bb474a37f",
	}
	response, err := client.ImportKeyMaterial(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

For SDK sample code of more programming languages, see the Sample Code tab in API Explorer. SDK sample code can be automatically generated.

Status Codes

Status Code

Description

200

Request succeeded.

Error Codes

See Error Codes.