# 02-Public-Key-Search



02-Public-Key-Search [#02-public-key-search]

You can use this API to query the Public Key of a specific VASP. While the results from 'VASP List Search' may include some cached data, this API retrieves current data.

For example, when you receive `422 INVALID_RECEIVER_PUBLIC_KEY` error, you can call this API to check if the Public Key has been changed.

> ❗️This API works in a **synchronous manner**, providing an immediate response upon request.

Endpoint [#endpoint]

`GET` `/v1/code/Vasp/{VaspEntityId}/pubkey`

Request Parameters [#request-parameters]

Headers [#headers]

| Name                 | Type   | Required | Description               |
| :------------------- | :----- | :------- | :------------------------ |
| X-Code-Req-Datetime  | string | Required | ISO8601 UTC datetime      |
| X-Code-Req-Nonce     | string | Required | Random nonce              |
| X-Code-Req-PubKey    | string | Required | Your Public Key           |
| X-Code-Req-Signature | string | Required | Signature                 |
| X-Request-Origin     | string | Required | `code:{yourVaspEntityId}` |
| accept               | string | Optional | `application/json`        |

Path Parameters [#path-parameters]

| Name         | Type   | Required | Description                            |
| :----------- | :----- | :------- | :------------------------------------- |
| VaspEntityId | string | Required | The VaspEntityId of the VASP to query. |

Response [#response]

Fields [#fields]

| Name    | Type  | Description                                                                                         |
| :------ | :---- | :-------------------------------------------------------------------------------------------------- |
| pubkeys | array | An array of pubkey objects registered to VASP. Each object consists of pubkey and ExpiresAt fields. |

**pubkey object fields:**

| Name      | Type   | Description                  |
| :-------- | :----- | :--------------------------- |
| pubkey    | string | base64-encoded pubkey        |
| expiresAt | string | ISO 8601 UTC expiration time |

Examples [#examples]

Request [#request]

```bash
curl --request GET \
     --url https://trapi-dev.codevasp.com/v1/code/Vasp/codexchange/pubkey \
     --header 'X-Code-Req-Datetime: 2024-03-04T15:10Z' \
     --header 'X-Code-Req-Nonce: 989166249' \
     --header 'X-Code-Req-PubKey: YourPubkey' \
     --header 'X-Code-Req-Signature: Signature' \
     --header 'X-Request-Origin: code:yourVaspEntityId' \
     --header 'accept: application/json'
```

Response [#response-1]

```json
{
  "pubkeys": [
    {
      "pubkey": "base64 encoded ascii",
      "expiresAt": "2022-06-31T23:59:59Z"
    }
  ]
}
```