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    Certificate Management Service:Sign

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    Certificate Management Service:Sign

    Last Updated:Apr 20, 2026

    This operation creates a digital signature with a PCA certificate from a certificate repository.

    Operation description

    This operation creates a digital signature with a PCA certificate from a certificate repository.

    QPS limit

    This operation supports up to 1,000 queries per second (QPS) for a single user. If you exceed this limit, the system throttles your API calls, which can impact your business. Plan your API calls accordingly.

    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:Sign

    none

    *All Resource

    *

    		 None None

    Request parameters

    Parameter

    Type

    Required

    Description

    Example
    Message

    string

    Yes

    The data to sign. The MessageType parameter determines the format of this data. If MessageType is set to RAW, Message is the raw data. If MessageType is set to BASE64, Message is the Base64-encoded raw data. If MessageType is set to DIGEST, Message is the message digest (hash value). If MessageType is set to BLIND, Message is the Base64-encoded blinded message.

    MTIzNA==
    CertIdentifier

    string

    No

    The unique identifier of the certificate. You can get this value by calling the ListCert operation.

    • The identifier of an SSL certificate is typically in the format '{Certificate ID}-cn-hangzhou'.

    • For a PCA certificate, this is the Identifier from the corresponding private certificate.

    1ef1da5f-38ed-69b3-****-037781890265
    SigningAlgorithm

    string

    Yes

    The signature algorithm. Valid values:

    • SHA256withRSA

    • SHA256withRSA/PSS

    • SHA256withECDSA

    • SM3withSM2

    • SHA256withRSA/P7

    SHA256withRSA
    MessageType

    string

    Yes

    The message type. Valid values:

    • RAW (default): The raw data.

    • DIGEST: The message digest (hash value) of the raw data.

    • BASE64: The Base64-encoded raw data.

    • BLIND: Enables blind signing. This is supported only for certificates that use an RSA algorithm.

    RAW
    CustomIdentifier

    string

    No

    A unique, user-defined identifier.

    ***e6bb538d538c70c01f81fg3****
    WarehouseId

    integer

    No

    The repository ID.

    Note

    You can get this ID by calling the ListCertWarehouse operation.

    1

    Response elements

    Element

    Type

    Description

    Example

    object

    Signature

    string

    The Base64-encoded signature.

    eyaC0w3ROK5b3QcHmUtAhMY/sQjKu2t3uBfnf6J/gn7JfZtyxwcCUjzXbw5jmqJQRbj1te670Bshg9kUdanKhtHFhJjU5jX+ZMMBr6pH0gqQDJxR0K0yHXRc0Q5OQoUZ6BfpbI4Wt4jJvJSdCstz1vSg12CfEHS8Kd5qfhItK7Y=
    RequestId

    string

    The request ID.

    1ed33293-2e48-6b14-861e-538e28e408eb

    Examples

    Success response

    JSON format

    {
  "Signature": "eyaC0w3ROK5b3QcHmUtAhMY/sQjKu2t3uBfnf6J/gn7JfZtyxwcCUjzXbw5jmqJQRbj1te670Bshg9kUdanKhtHFhJjU5jX+ZMMBr6pH0gqQDJxR0K0yHXRc0Q5OQoUZ6BfpbI4Wt4jJvJSdCstz1vSg12CfEHS8Kd5qfhItK7Y=",
  "RequestId": "1ed33293-2e48-6b14-861e-538e28e408eb"
}

    Error codes

    See Error Codes for a complete list.

    Release notes

    See Release Notes for a complete list.