> For the complete documentation index, see [llms.txt](https://developers.doku.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.doku.com/get-started-with-doku-api/signature-component/non-snap/signature-from-api-get-method.md).

# Signature from API Get Method

For API that uses `GET` method such as, Check Status API, merchant don't need to generate a `Digest`.

1. Arrange the signature components to one component and its value per line by adding  escape character. Don't add  at the end of the string. Sample of the raw format:

```html
Client-Id:MCH-0001-10791114622547\nRequest-Id:d895fb53-479c-4f77-a76a-ab81b40d77cb\nRequest-Timestamp:2020-08-11T08:45:42Z\nRequest-Target:/orders/v1/status/INV-123123-12313
```

This is how merchant see it : 

```html
Client-Id:MCH-0001-10791114622547
Request-Id:d895fb53-479c-4f77-a76a-ab81b40d77cb
Request-Timestamp:2020-08-11T08:45:42Z
Request-Target:/orders/v1/status/INV-123123-12313
```

2. Calculate HMAC-SHA256 base64 from all the components above using the [Secret Key from DOKU Back Office](https://dashboard.doku.com/docs/docs/getting-started/retrieve-credential)
3. Put encoded value and prepend `HMACSHA256=` to the `Signature`.  Sample:

```html
Signature: HMACSHA256=B1cKBzk/aB1AXADCZkq135bnktxY1o02zmmdd2cVgf12=
```