Help Center/ IoT Device Access/ API Reference/ API Reference on the Application Side/ API/ Device Management/ Reset a Device Fingerprint
Updated on 2024-12-02 GMT+08:00
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Reset a Device Fingerprint

Function

This API is used by an application to reset a device fingerprint. A device fingerprint will be reset to the specified one. If a device fingerprint is not specified, it is set to the certificate fingerprint used when the device is connected to the platform for the first time.

Debugging

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

URI

POST /v5/iot/{project_id}/devices/{device_id}/reset-fingerprint

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Parameter description: project ID. For details about how to obtain the project ID, see Obtaining a Project ID.

device_id

Yes

String

Parameter description: device ID, which uniquely identifies a device. The value of this parameter is specified during device registration or allocated by the platform.

Value: The value can contain a maximum of 128 characters. Only letters, digits, underscores (_), and hyphens (-) are allowed.

Request Parameters

Table 2 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

No

String

Parameter description: 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

Parameter description: 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.
Table 3 Request body parameters

Parameter

Mandatory

Type

Description

fingerprint

No

String

Parameter description: device fingerprint. If this parameter is specified, the platform resets the device fingerprint to the specified value. If this parameter is not specified, the device fingerprint is set to the certificate fingerprint used when the device is connected to the platform for the first time.

Value: The value is a string of 40 or 64 hexadecimal characters.

force_disconnect

No

Boolean

Parameter description: whether to forcibly disconnect a device. Only long-connection devices are supported. The default value is false.

fingerprint_type

No

String

** Parameter description**: type of the device certificate fingerprint to reset.

Options:

  • PRIMARY: Resets the master fingerprint. Primary fingerprint used for certificate-based device access authentication.

  • SECONDARY: Resets the sub fingerprint. Secondary fingerprint used when the master fingerprint fails to pass the authentication. Unavailable for devices accessed using CoAP.

Response Parameters

Status code: 200

Table 4 Response body parameters

Parameter

Type

Description

device_id

String

Device ID, used to uniquely identify a device. The value of this parameter is specified during device registration or allocated by the platform. If the value is allocated by the platform, the value is in the format of [product_id]_[node_id].

fingerprint

String

Device fingerprint.

fingerprint_type

String

** Parameter description**: type of the device certificate fingerprint to reset.

Options:

  • PRIMARY: Resets the master fingerprint.

  • SECONDARY: Resets the sub fingerprint.

Example Requests

Resets the device fingerprint. The new fingerprint is dc0f****f22f.

POST https://{endpoint}/v5/iot/{project_id}/devices/{device_id}/reset-fingerprint

{
  "fingerprint" : "dc0f****f22f"
}

Example Responses

Status code: 200

OK

{
  "device_id" : "d4922d8a-6c8e-4396-852c-164aefa6638f",
  "fingerprint" : "dc0f****f22f",
  "fingerprint_type" : "PRIMARY"
}

Status Codes

Status Code

Description

200

OK

400

Bad Request

401

Unauthorized

403

Forbidden

404

Not Found

500

Internal Server Error

Error Codes

See Error Codes.

Parent topic: Device Management