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    Certificate Management Service:CreateClientCertificateWithCsr

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    Certificate Management Service:CreateClientCertificateWithCsr

    Last Updated:Dec 17, 2025

    Issues a single client certificate based on a custom certificate signing request (CSR).

    Operation description

    Before you call this operation, you must call CreateRootCACertificate to create a root CA certificate and CreateSubCACertificate to create a subordinate CA certificate. Only subordinate CA certificates can be used to issue client certificates.

    QPS limit

    This operation is limited to 10 queries per second (QPS) per user. API calls that exceed this limit are throttled. Throttling may affect your business, so we recommend that you call this operation at a reasonable rate.

    Try it now

    Try this API in OpenAPI Explorer, no manual signing needed. Successful calls auto-generate SDK code matching your parameters. Download it with built-in credential security for local usage.

    Test

    RAM authorization

    The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

    • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

    • API: The API that you can call to perform the action.

    • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

    • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

      • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

      • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

    • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

    • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

    Action

    Access level

    Resource type

    Condition key

    Dependent action

    yundun-cert:CreateClientCertificateWithCsr

    create

    *All Resource

    *

    		 None None

    Request parameters

    Parameter

    Type

    Required

    Description

    Example
    Csr

    string

    No

    The content of the certificate signing request (CSR). Use OpenSSL or Keytool to generate a CSR. For more information, see How to create a CSR file.

    -----BEGIN CERTIFICATE REQUEST----- ...... -----END CERTIFICATE REQUEST-----
    SanType

    integer

    No

    The type of the Subject Alternative Name (SAN) extension for the client certificate. Valid values:

    • 1: Email address.

    • 6: Uniform Resource Identifier (URI).

    1
    SanValue

    string

    No

    The content of the SAN extension. To enter multiple values, separate them with commas (,).

    somebody@example.com
    Organization

    string

    No

    The name of the organization. Default: Alibaba Inc.

    阿里云计算有限公司
    OrganizationUnit

    string

    No

    The name of the department. Default: Alibaba Cloud CDN.

    Security
    Country

    string

    No

    The country code, such as CN or US.

    CN
    CommonName

    string

    No

    The common name of the certificate. Chinese characters and English letters are supported.

    Note

    If you set the Csr parameter, the value of CommonName is based on the information in the Csr parameter.

    aliyundoc.com
    State

    string

    No

    Specify the province or state where your organization is located. The value can contain letters. The default value is the province or state where the organization of the issuing intermediate CA is located.

    Zhejiang
    Locality

    string

    No

    The city where the organization is located. Chinese characters and English letters are supported. By default, this is the city of the organization that owns the issuing subordinate CA certificate.

    Hangzhou
    Algorithm

    string

    No

    The key algorithm of the client certificate. The key algorithm is in the <encryption algorithm>_<key length> format. Valid values:

    • RSA_1024: The corresponding signature algorithm is Sha256WithRSA.

    • RSA_2048: The corresponding signature algorithm is Sha256WithRSA.

    • RSA_4096: The corresponding signature algorithm is Sha256WithRSA.

    • ECC_256: The corresponding signature algorithm is Sha256WithECDSA.

    • ECC_384: The corresponding signature algorithm is Sha256WithECDSA.

    • ECC_512: The corresponding signature algorithm is Sha256WithECDSA.

    • SM2_256: The corresponding signature algorithm is SM3WithSM2.

    The encryption algorithm of the client certificate must be the same as the subordinate CA certificate, but the key length can be different. For example, if the key algorithm of the subordinate CA certificate is RSA_2048, the key algorithm of the client certificate must be RSA_1024, RSA_2048, or RSA_4096.

    Note

    Call DescribeCACertificate to query the key algorithm of the subordinate CA certificate.

    RSA_2048
    ParentIdentifier

    string

    No

    The unique identifier of the subordinate CA certificate that issues the client certificate.

    Note

    Call DescribeCACertificateList to query the unique identifiers of subordinate CA certificates.

    270ae6bb538d538c70c01f81fg3****
    Years

    integer

    No

    The validity period of the certificate in years.

    1
    Months

    integer

    No

    The validity period of the certificate in months.

    12
    Days

    integer

    No

    The validity period of the client certificate in days. The Days, BeforeTime, and AfterTime parameters cannot all be empty. Also, BeforeTime and AfterTime must be set together or left empty together. The following rules apply:

    • If you set Days, setting BeforeTime and AfterTime is optional.

    • If you do not set Days, you must set BeforeTime and AfterTime.

    Note

    • If Days, BeforeTime, and AfterTime are all set, the value of Days is used.

    • The validity period of the client certificate cannot exceed that of its issuing subordinate CA certificate. Call DescribeCACertificate to view the validity period of the subordinate CA certificate.

    365
    BeforeTime

    integer

    No

    The issuance time of the client certificate. This is a UNIX timestamp. The default value is the time when you call this operation. Unit: seconds.

    Note

    The BeforeTime and AfterTime parameters must be set together or left empty together.

    1634283958
    AfterTime

    integer

    No

    The expiration time of the client certificate. This is a UNIX timestamp. Unit: seconds.

    Note

    The BeforeTime and AfterTime parameters must be set together or left empty together.

    1665819958
    Immediately

    integer

    No

    Specifies whether to immediately return the digital certificate.

    • 0: No. This is the default value.

    • 1: Returns the certificate.

    • 2: Returns the certificate and its certificate chain.

    1
    EnableCrl

    integer

    No

    Specifies whether to include the Certificate Revocation List (CRL) address.

    0: No

    1: Yes

    1
    Tags

    array<object>

    No

    A list of tags.

    object

    No

    A list of tags.

    Key

    string

    No

    The tag key.

    database
    Value

    string

    No

    The value of the tag.

    1
    ResourceGroupId

    string

    No

    The ID of the resource group to which the certificate belongs.

    rg-ae******4wia

    In addition to the parameters in this topic, you must also include the common request parameters for all Alibaba Cloud API calls. For more information about the request format, see the request sample in the Examples section.

    For more information, see Common parameters.

    Response elements

    Element

    Type

    Description

    Example

    object

    CreateCertificateResponse

    X509Certificate

    string

    The content of the client certificate.

    -----BEGIN CERTIFICATE-----\n......\n-----END CERTIFICATE-----
    CertificateChain

    string

    The CA certificate chain.

    -----BEGIN CERTIFICATE-----\n......\n-----END CERTIFICATE-----\n-----BEGIN CERTIFICATE-----\n......\n-----END CERTIFICATE-----\n
    Identifier

    string

    The unique identifier of the client certificate.

    200ae6bb538d538c70c01f81dcf2****
    SerialNumber

    string

    The certificate serial number.

    084bde9cd233f0ddae33adc438cfbbbd****
    RequestId

    string

    The ID of the request. Alibaba Cloud generates a unique ID for each request. Use the ID to troubleshoot issues.

    31C66C7B-671A-4297-9187-2C4477247A74
    CertSignBufKmc

    string

    The encrypted certificate content.

    MIIDYDCCAwWgAwIBAgIU *** TmTk0CS3WNweqsjMEETyxd2pzU6DA
    CertKmcRep1

    string

    The ciphertext of the encrypted certificate.

    userSeal=MHkCIEu94PQAahFWuFk% *** EtFw%2FkMMBjw8i5bFfSkV%2FIUrcOJD

    Examples

    Success response

    JSON format

    {
  "X509Certificate": "-----BEGIN CERTIFICATE-----\\n......\\n-----END CERTIFICATE-----",
  "CertificateChain": "-----BEGIN CERTIFICATE-----\\n......\\n-----END CERTIFICATE-----\\n-----BEGIN CERTIFICATE-----\\n......\\n-----END CERTIFICATE-----\\n",
  "Identifier": "200ae6bb538d538c70c01f81dcf2****",
  "SerialNumber": "084bde9cd233f0ddae33adc438cfbbbd****",
  "RequestId": "31C66C7B-671A-4297-9187-2C4477247A74",
  "CertSignBufKmc": "MIIDYDCCAwWgAwIBAgIU\n***\nTmTk0CS3WNweqsjMEETyxd2pzU6DA",
  "CertKmcRep1": "userSeal=MHkCIEu94PQAahFWuFk%\n***\nEtFw%2FkMMBjw8i5bFfSkV%2FIUrcOJD"
}

    Error codes

    See Error Codes for a complete list.

    Release notes

    See Release Notes for a complete list.