Obtain the Device CA Certificate List

Function

This API is used by an application to obtain the device CA certificate list from the IoT platform.

Debugging

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

URI

GET /v5/iot/{project_id}/certificates

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details about how to obtain the project ID, see Obtaining a Project ID.

**Table 2** Query Parameters
Parameter	Mandatory	Type	Description
app_id	No	String	Resource space ID. This parameter is optional. If you have multiple resource spaces, you can specify this parameter to query certificates in the specified resource space. If this parameter is not carried, certificates in all resource spaces are queried.
limit	No	Integer	Number of records to be displayed on each page. The value is an integer ranging from 1 to 50. The default value is 10. Minimum: 1 Maximum: 50 Default: 10
marker	No	String	ID of the last record in the previous query. The value is returned by the platform during the previous query. Records are queried in descending order of record IDs (the marker value). A newer record will have a larger ID. If marker is specified, only the records whose IDs are smaller than marker are queried. If marker is not specified, the query starts from the record with the largest ID, that is, the latest record. If all data needs to be queried in sequence, this parameter must be filled with the value of marker returned in the last query response each time. Default: ffffffffffffffffffffffffffffffffffff
offset	No	Integer	If offset is set to N, the query starts from the N+1 record after the last record in the previous query. The value is an integer ranging from 0 to 500. The default value is 0. If offset is set to 0, the output starts from the first record after the last record in the previous query. To ensure API performance, you can use this parameter together with marker to turn pages. For example, if there are 50 records on each page, you can directly specify offset to jump to the specified page within page 1 and 11. If you want to view records displayed on pages 12 to 22, you need to use the marker value returned on page 11 as the marker value for the next query. Minimum: 0 Maximum: 500 Default: 0

Request Parameters

**Table 3** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	No	String	User token. You can obtain the token by calling the IAM API Obtaining a User Token Through Password Authentication. X-Subject-Token in the response header returned by the API is the desired user token. For details about how to obtain the token, see Token Authentication.
Instance-Id	No	String	Instance ID. Unique identifier of each instance in the physical multi-tenant scenario. Mandatory for professional editions and recommended in other cases. Log in to the IoTDA console and choose Overview in the navigation pane to view the instance ID. For details, see Viewing Instance Details.

Response Parameters

Status code: 200

**Table 4** Response body parameters
Parameter	Type	Description
certificates	Array of CertificatesRspDTO objects	Certificate list.
page	Page object	Pagination information of the query results.

**Table 5** CertificatesRspDTO
Parameter	Type	Description
certificate_id	String	Unique CA certificate ID, allocated by the platform when the certificate is uploaded.
cn_name	String	CN of the CA certificate.
owner	String	Owner of the CA certificate.
status	Boolean	Verification status of the CA certificate. true indicates that the certificate has been verified and can be used for device access authentication. false indicates that the certificate does not pass the verification.
verify_code	String	Verification code of the CA certificate.
provision_enable	Boolean	Whether to enable the self-registration capability. The options are true (yes) and false (no). If this parameter is set to true, this function must be used together with the pre-provisioning function.
template_id	String	ID of the bound pre-provisioning template.
create_date	String	Time when the certificate was created. The value is in the format of yyyyMMdd'T'HHmmss'Z', for example, 20151212T121212Z.
effective_date	String	Time when the CA certificate starts to take effect. The value is in the format of yyyyMMdd'T'HHmmss'Z', for example, 20151212T121212Z.
expiry_date	String	Time when CA certificate expires. The value is in the format of yyyyMMdd'T'HHmmss'Z', for example, 20151212T121212Z.

**Table 6** Page
Parameter	Type	Description
count	Long	Total number of records that meet the query conditions.
marker	String	ID of the last record in this query, which can be used in the next query.

Example Requests

Obtains the device CA certificate list.

GET https://{endpoint}/v5/iot/{project_id}/certificates

Example Responses

Status code: 200

{
  "certificates" : [ {
    "certificate_id" : "string",
    "cn_name" : "string",
    "owner" : "string",
    "status" : true,
    "verify_code" : "string",
    "create_date" : "20191212T121212Z",
    "effective_date" : "20191212T121212Z",
    "expiry_date" : "20221212T121212Z",
    "provision_enable" : true,
    "template_id" : "61c970ce2d63eb6ee655dbf0"
  } ],
  "page" : {
    "count" : 100,
    "marker" : "5c8f3d2d3df1f10d803adbda"
  }
}