Updated on 2026-09-21 GMT+08:00

Querying a Public Key

Function

This API is used to query the public key of a specified asymmetric key.

Constraints

This API cannot be used to obtain the public key of a symmetric key.

Calling Method

For details, see Calling APIs.

URI

POST /v1.0/{project_id}/kms/get-publickey

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Definition Project ID. For details, see Obtaining a Project ID. Constraints N/A Range The value returned by the IAM API is used, which contains 32 characters. Default Value N/A

Request Parameters

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	Definition User token. It can be obtained by calling the IAM API. The value of X-Subject-Token in the response header is the user token. Constraints N/A Range Obtain the value by calling the IAM API for obtaining the user token. Default Value N/A

**Table 3** Request body parameters
Parameter	Mandatory	Type	Description
key_id	Yes	String	Definition Key ID Constraints The value must be a 36-byte ID. The value must match the regular expression ^[0-9a-z]{8}-[0-9a-z]{4}-[0-9a-z]{4}-[0-9a-z]{4}-[0-9a-z]{12}$. Range N/A Default Value N/A
sequence	No	String	Definition A 36-byte serial number of a request message, for example, 919c82d4-8046-4722-9094-35c3c6524cff. Constraints N/A Range N/A Default Value N/A

Response Parameters

Status code: 200

**Table 4** Response body parameters
Parameter	Type	Description
key_id	String	Definition Key ID Range N/A
public_key	String	Definition Public key information Range N/A

Example Requests

Query the public key of an asymmetric key whose ID is 0d0466b0-e727-4d9c-b35d-f84bb474a37f.

{
  "key_id" : "0d0466b0-e727-4d9c-b35d-f84bb474a37f"
}

Example Responses

Status code: 200

Request succeeded.

{
  "key_id" : "bb6a3d22-dc93-47ac-b5bd-88df7ad35f1e",
  "public_key" : "-----BEGIN PUBLIC KEY-----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\r\n-----END PUBLIC KEY-----\r\n"
}

Status Codes

Status Code	Description
200	Request succeeded.

Error Codes

See Error Codes.

Parent Topic: Querying Keys