Updated on 2025-11-28 GMT+08:00

Creating a CA

Function

There are three methods to create CAs.

  • Creating a root CA: All mandatory parameters must be specified.

  • Creating a subordinate CA and activating the certificate: All mandatory parameters must be specified.

  • Creating a subordinate CA without activating it: The request body contains only issuer_id, signature_algorithm, or validity.

Debugging

You can debug this API through automatic authentication in API Explorer or use the SDK sample code generated by API Explorer.

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

    pca:ca:create

    Write

    ca *

    -

    -

    -

    -

    • g:EnterpriseProjectId

    • g:RequestTag/<tag-key>

    • g:TagKeys

URI

POST /v1/private-certificate-authorities

Request Parameters

Table 1 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

User token. For details, see [Obtaining a User Token] (https://support.huaweicloud.com/intl/en-us/api-iam/iam_30_0001.html).

Table 2 Request body parameters

Parameter

Mandatory

Type

Description

type

Yes

String

Type of the CA you want to create:

  • ROOT: root CA

  • SUBORDINATE: subordinate CA

distinguished_name

Yes

DistinguishedName object

Certificate name. For details, see data structure for the DistinguishedName field.

key_algorithm

Yes

String

Key algorithm. The options are as follows:

  • RSA2048: RSA algorithm. The key length is 2048 bits.

  • RSA4096: RSA algorithm. The key length is 4096 bits.

  • EC256: Elliptic Curve Digital Signature Algorithm (ECDSA). The key length is 256 bits.

  • EC384: Elliptic Curve Digital Signature Algorithm (ECDSA). The key length is 384 bits.

  • SM2: Elliptic curve algorithm (signature hash algorithm SM3) issued by the China State Cryptography Administration. The key length is 256 bits. (Huawei Cloud Chinese Mainland website)

validity

No

Validity object

Validity period of a certificate. The options are as follows:

  • This parameter is mandatory when you create a root CA.

  • This parameter is mandatory when you create and activate a subordinate CA.

  • This parameter can be ignored when you create a subordinate CA but do not activate it. However, you still need to specify this parameter when you activate the subordinate CA later.

NOTE:

For details, see data structure description of the Validity field.

hsm_cluster_info

No

HsmClusterInfo object

HSM cluster information.

This method can be used to encrypt CA only for users in the whitelist.

For details, see HsmClusterInfo field description.

issuer_id

No

String

ID of the parent CA. The options are as follows:

  • If you want to create a root CA, this parameter can be ignored. This is because a root CA is a self-signed certificate and has no parent CA.

  • If you want to create and activate a subordinate CA, this parameter is mandatory.

  • If you want to create a subordinate CA but do not activate it, this parameter can be ignored. However, you still need to specify this parameter when you activate the subordinate CA later.

Minimum: 36

Maximum: 36

path_length

No

Integer

Length of the CA certificate path. The options are as follows:

  • If you want to create a root CA, this parameter is not required by default. This means CA path length is not limited and you can expand the CA hierarchies. You can limit the CA hierarchy levels by subordinate CAs

  • If you want to create and activate a subordinate CA, this parameter is customizable. If you do not specify this parameter, 0 is used by default.

  • If you want to create a subordinate CA but do not activate it, this parameter can be ignored. You still need to specify this parameter when you activate the subordinate CA later.

Minimum: 0

Maximum: 6

signature_algorithm

No

String

Signature hash algorithm.

  • There are three cases:

    • If you want to create a root CA, this parameter is mandatory.

    • If you want to create a subordinate CA and activate it, this parameter is mandatory.

    • If you want to create a subordinate CA but not activate it immediately, this parameter is not required. You can specify this parameter when activating the subordinate CA.

  • The options are as follows:

    • SHA256

    • SHA384

    • SHA512

    • SM3 (Chinese mainland website, SM2)

key_usages

No

Array of strings

Key usage. For details, see [4.2.1.3] in RFC 5280 (https://datatracker.ietf.org/doc/html/rfc5280#section-4.2.1.3)

  • digitalSignature: used as digital signatures.

  • nonRepudiation: used for non-repudiation

  • keyEncipherment: used to encrypt key data.

  • dataEncipherment: used to encrypt data.

  • keyAgreement: used for key negotiation

  • keyCertSign: used to issue a certificate.

  • cRLSign: used to issue the revocation list.

  • encipherOnly: used only for encryption.

  • decipherOnly: used only for decryption.

  • The default values are as follows:

NOTE:
  • Root CA certificate: The default value is [digitalSignature,keyCertSign,cRLSign]. The value you specified will be ignored.

  • Subordinate CA certificate: The default value is [digitalSignature,keyCertSign,cRLSign]. You can customize the value.

crl_configuration

No

CrlConfiguration object

Certificate CRL. For details, see data structure for the CrlConfiguration field.

enterprise_project_id

No

String

Enterprise project ID. If the enterprise project function is not enabled, you do not need to set this parameter. If the enterprise project function is enabled, you can set this parameter when querying a resource. If this parameter is not specified, the system searches for the required resource in all the enterprise projects that you have permissions for. In this case, the value of enterprise_project_id is all. The parameter value must meet one of the following requirements:

Is all

Is 0

Matches the regular expression ^[0-9a-z]{8}-[0-9a-z]{4}-[0-9a-z]{4}-[0-9a-z]{4}-[0-9a-z]{12}$.

ca_id

No

String

ID of the CA certificate. If the value is empty, a pay-per-use CA is created. If the value is not empty, the yearly/monthly CA information is saved.

Minimum: 36

Maximum: 36

Table 3 DistinguishedName

Parameter

Mandatory

Type

Description

common_name

Yes

String

Common name (CN) of a certificate. The value can contain a maximum of 64 characters, including only letters, digits, spaces, Chinese characters, hyphens (-), underscores (_), periods (.), commas (,), and asterisks (*).

Minimum: 1

Maximum: 64

country

Yes

String

Country code. The value is a string of two characters and can contain only letters.

Minimum: 2

Maximum: 2

state

Yes

String

Name of a province or city. The value can contain a maximum of 128 characters, including only letters, digits, Chinese characters, spaces, hyphens (-), underscores (_), periods (.), and commas (,).

Minimum: 1

Maximum: 128

locality

Yes

String

Region name. The value can contain a maximum of 128 characters, including only letters, digits, Chinese characters, spaces, hyphens (-), underscores (_), periods (.), and commas (,).

Minimum: 1

Maximum: 128

organization

Yes

String

Organization name. The value can contain a maximum of 64 characters, including only letters, digits, Chinese characters, spaces, hyphens (-), underscores (_), periods (.), and commas (,).

Minimum: 1

Maximum: 64

organizational_unit

Yes

String

Organization unit name. The value can contain a maximum of 64 characters, including only letters, digits, Chinese characters, spaces, hyphens (-), underscores (_), periods (.), and commas (,).

Minimum: 1

Maximum: 64

Table 4 Validity

Parameter

Mandatory

Type

Description

type

Yes

String

Validity period type, which is mandatory. The options are as follows:

  • YEAR: by the year (12 months)

  • MONTH:by the month (31 days)

  • DAY: by the day

  • HOUR: by the hour

value

Yes

Integer

The certificate validity period. The value of this parameter varies depending on the value of type:

  • Root CAs: The validity period is less than or equal to 30 years.

  • Subordinate CAs and private certificates: The validity period is less than or equal to 20 years.

start_from

No

Integer

Start time. The options are as follows:

  • The format is a timestamp in milliseconds. For example, 1645146939688 indicates 2022-02-18 09:15:39.

  • The start time can begin no more than five minutes earlier than the current time. It means the value of start_from must be larger than the value of current_time minus 5 minutes.

Table 5 HsmClusterInfo

Parameter

Mandatory

Type

Description

hsm_project

Yes

String

Project information.

For example, cn-north-7

hsm_cluster_id

Yes

String

HSM cluster identifier.

For example, 54d8301b-b859-4c55-a628-21fcf90e609e

hsm_ca_cert

Yes

String

String following base64 of the certificate in PEM format

  • MXXXXX

Table 6 CrlConfiguration

Parameter

Mandatory

Type

Description

enabled

Yes

Boolean

Whether to enable the gray release function of CRL.

  • true

  • false

crl_name

No

String

Name of the certificate revocation list.

NOTE:

If you do not specify this parameter, the system uses the ID of the parent CA that issues the current certificate by default.

obs_bucket_name

No

String

Specifies the OBS bucket name.

NOTE:

To enable the CRL release function:

  • This parameter is mandatory. You must have created an agency and assigned PCA permissions on OBS to it. For details, see ** Certificate Revocation > Checking Permissions of an Agency ** and ** Certificate Revocation > Creating an Agency **.

  • The specified OBS bucket must exist. Otherwise, an error will be reported.

valid_days

No

Integer

CRL update interval, in days. This parameter is mandatory when the CRL release function is enabled.

Minimum: 7

Maximum: 30

Response Parameters

Status code: 200

Table 7 Response body parameters

Parameter

Type

Description

ca_id

String

ID of the CA certificate being issued.

Minimum: 36

Maximum: 36

Status code: 400

Table 8 Response body parameters

Parameter

Type

Description

error_code

String

Error code

Minimum: 3

Maximum: 36

error_msg

String

Error message

Minimum: 0

Maximum: 1024

Status code: 401

Table 9 Response body parameters

Parameter

Type

Description

error_code

String

Error code

Minimum: 3

Maximum: 36

error_msg

String

Error message

Minimum: 0

Maximum: 1024

Status code: 403

Table 10 Response body parameters

Parameter

Type

Description

error_code

String

Error code

Minimum: 3

Maximum: 36

error_msg

String

Error message

Minimum: 0

Maximum: 1024

Status code: 404

Table 11 Response body parameters

Parameter

Type

Description

error_code

String

Error code

Minimum: 3

Maximum: 36

error_msg

String

Error message

Minimum: 0

Maximum: 1024

Status code: 500

Table 12 Response body parameters

Parameter

Type

Description

error_code

String

Error code

Minimum: 3

Maximum: 36

error_msg

String

Error message

Minimum: 0

Maximum: 1024

Example Requests

When you use this API to create a CA certificate, a token is required in the X-Auth-Token field in the request header. The token must have the permission to access the API.

POST https://ccm.cn-north-4.myhuaweicloud.com/v1/private-certificate-authorities

{
  "type" : "ROOT",
  "key_algorithm" : "RSA4096",
  "signature_algorithm" : "SHA512",
  "distinguished_name" : {
    "common_name" : "demoRootRSA",
    "country" : "CN",
    "locality" : "chengdu",
    "organization" : "HW",
    "organizational_unit" : "dew",
    "state" : "sichuan"
  },
  "validity" : {
    "type" : "YEAR",
    "value" : 3
  },
  "crl_configuration" : {
    "enabled" : false,
    "obs_bucket_name" : "demoBucket",
    "valid_days" : 8
  }
}

Example Responses

Status code: 200

Request succeeded.

{
  "ca_id" : "66504812-fedc-414a-9b7c-4c1836398524"
}

Status code: 400

Invalid request parameters.

{
  "error_code" : "PCA.XXX",
  "error_msg" : "XXX"
}

Status code: 401

Token required for the requested page.

{
  "error_code" : "PCA.XXX",
  "error_msg" : "XXX"
}

Status code: 403

Authentication failed.

{
  "error_code" : "PCA.XXX",
  "error_msg" : "XXX"
}

Status code: 404

No resources available or found.

{
  "error_code" : "PCA.XXX",
  "error_msg" : "XXX"
}

Status code: 500

Internal service error.

{
  "error_code" : "PCA.XXX",
  "error_msg" : "XXX"
}

SDK Sample Code

The SDK sample code is as follows.

Java

When you use this API to create a CA certificate, a token is required in the X-Auth-Token field in the request header. The token must have the permission to access the API.

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package com.huaweicloud.sdk.test;

import com.huaweicloud.sdk.core.auth.ICredential;
import com.huaweicloud.sdk.core.auth.GlobalCredentials;
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.ccm.v1.region.CcmRegion;
import com.huaweicloud.sdk.ccm.v1.*;
import com.huaweicloud.sdk.ccm.v1.model.*;


public class CreateCertificateAuthoritySolution {

    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");

        ICredential auth = new GlobalCredentials()
                .withAk(ak)
                .withSk(sk);

        CcmClient client = CcmClient.newBuilder()
                .withCredential(auth)
                .withRegion(CcmRegion.valueOf("<YOUR REGION>"))
                .build();
        CreateCertificateAuthorityRequest request = new CreateCertificateAuthorityRequest();
        CreateCertificateAuthorityRequestBody body = new CreateCertificateAuthorityRequestBody();
        CrlConfiguration crlConfigurationbody = new CrlConfiguration();
        crlConfigurationbody.withEnabled(false)
            .withObsBucketName("demoBucket")
            .withValidDays(8);
        Validity validitybody = new Validity();
        validitybody.withType("YEAR")
            .withValue(3);
        DistinguishedName distinguishedNamebody = new DistinguishedName();
        distinguishedNamebody.withCommonName("demoRootRSA")
            .withCountry("CN")
            .withState("sichuan")
            .withLocality("chengdu")
            .withOrganization("HW")
            .withOrganizationalUnit("dew");
        body.withCrlConfiguration(crlConfigurationbody);
        body.withSignatureAlgorithm("SHA512");
        body.withValidity(validitybody);
        body.withKeyAlgorithm("RSA4096");
        body.withDistinguishedName(distinguishedNamebody);
        body.withType("ROOT");
        request.withBody(body);
        try {
            CreateCertificateAuthorityResponse response = client.createCertificateAuthority(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());
        }
    }
}

Python

When you use this API to create a CA certificate, a token is required in the X-Auth-Token field in the request header. The token must have the permission to access the API.

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# coding: utf-8

import os
from huaweicloudsdkcore.auth.credentials import GlobalCredentials
from huaweicloudsdkccm.v1.region.ccm_region import CcmRegion
from huaweicloudsdkcore.exceptions import exceptions
from huaweicloudsdkccm.v1 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"]

    credentials = GlobalCredentials(ak, sk)

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

    try:
        request = CreateCertificateAuthorityRequest()
        crlConfigurationbody = CrlConfiguration(
            enabled=False,
            obs_bucket_name="demoBucket",
            valid_days=8
        )
        validitybody = Validity(
            type="YEAR",
            value=3
        )
        distinguishedNamebody = DistinguishedName(
            common_name="demoRootRSA",
            country="CN",
            state="sichuan",
            locality="chengdu",
            organization="HW",
            organizational_unit="dew"
        )
        request.body = CreateCertificateAuthorityRequestBody(
            crl_configuration=crlConfigurationbody,
            signature_algorithm="SHA512",
            validity=validitybody,
            key_algorithm="RSA4096",
            distinguished_name=distinguishedNamebody,
            type="ROOT"
        )
        response = client.create_certificate_authority(request)
        print(response)
    except exceptions.ClientRequestException as e:
        print(e.status_code)
        print(e.request_id)
        print(e.error_code)
        print(e.error_msg)

Go

When you use this API to create a CA certificate, a token is required in the X-Auth-Token field in the request header. The token must have the permission to access the API.

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package main

import (
	"fmt"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/global"
    ccm "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/ccm/v1"
	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/ccm/v1/model"
    region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/ccm/v1/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")

    auth := global.NewCredentialsBuilder().
        WithAk(ak).
        WithSk(sk).
        Build()

    client := ccm.NewCcmClient(
        ccm.CcmClientBuilder().
            WithRegion(region.ValueOf("<YOUR REGION>")).
            WithCredential(auth).
            Build())

    request := &model.CreateCertificateAuthorityRequest{}
	obsBucketNameCrlConfiguration:= "demoBucket"
	validDaysCrlConfiguration:= int32(8)
	crlConfigurationbody := &model.CrlConfiguration{
		Enabled: false,
		ObsBucketName: &obsBucketNameCrlConfiguration,
		ValidDays: &validDaysCrlConfiguration,
	}
	validitybody := &model.Validity{
		Type: "YEAR",
		Value: int32(3),
	}
	distinguishedNamebody := &model.DistinguishedName{
		CommonName: "demoRootRSA",
		Country: "CN",
		State: "sichuan",
		Locality: "chengdu",
		Organization: "HW",
		OrganizationalUnit: "dew",
	}
	signatureAlgorithmCreateCertificateAuthorityRequestBody:= "SHA512"
	request.Body = &model.CreateCertificateAuthorityRequestBody{
		CrlConfiguration: crlConfigurationbody,
		SignatureAlgorithm: &signatureAlgorithmCreateCertificateAuthorityRequestBody,
		Validity: validitybody,
		KeyAlgorithm: "RSA4096",
		DistinguishedName: distinguishedNamebody,
		Type: "ROOT",
	}
	response, err := client.CreateCertificateAuthority(request)
	if err == nil {
        fmt.Printf("%+v\n", response)
    } else {
        fmt.Println(err)
    }
}

More

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.

400

Invalid request parameters.

401

Token required for the requested page.

403

Authentication failed.

404

No resources available or found.

500

Internal service error.

Error Codes

See Error Codes.