> For the complete documentation index, see [llms.txt](https://docs.fuspay.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fuspay.finance/collection/digital-signatures.md).

# Digital Signatures

### Digital Signature

## This endpoint is used to sign the request body and generate the digital signature.

<mark style="color:green;">`POST`</mark> `https://exchanger-api.fuspay.finance/api/v1/no-auth/PartnerP2P/SignRequestSha512/`

The object is signed without including the signature field. Also sign exactly the fields that would be posted to the endpoint

<mark style="color:red;">**Please make sure we have whitelisted all your IPs**</mark>

<mark style="color:red;">**Only Collection or Order creation requires using of merchant secret and partner secret all other request to be signed are to be signed using partner secret alone**</mark>&#x20;

#### Headers

| Name                                           | Type   | Description      |
| ---------------------------------------------- | ------ | ---------------- |
| Content-Type<mark style="color:red;">\*</mark> | String | application/json |

#### Request Body

| Name                                                     | Type   | Description                                                            |
| -------------------------------------------------------- | ------ | ---------------------------------------------------------------------- |
| partner\_order\_id<mark style="color:red;">\*</mark>     | String | the order id on partners end                                           |
| amount\_to\_collect<mark style="color:red;">\*</mark>    | String | the amount to be collected                                             |
| timestamp<mark style="color:red;">\*</mark>              | String | the time the order was created                                         |
| order\_expiration<mark style="color:red;">\*</mark>      | String | the time the order would expire                                        |
| currency<mark style="color:red;">\*</mark>               | String | the currency of collection eg GHS, NGN                                 |
| partner\_callback\_url<mark style="color:red;">\*</mark> | String | the url where payment confirmation would be posted                     |
| partner\_redirect\_url                                   | String | partners site where users would be redirected after successful payment |
| secret<mark style="color:red;">\*</mark>                 | String | merchant and partner secret. The keys are concatenated                 |
| intrapay\_merchant\_id                                   | String | Your Id on the intrapay app                                            |
| partner\_id                                              | String | Your partner id returned on the onboard endpoint                       |

#### Sample code

{% tabs %}
{% tab title="NodeJs" %}

```javascript
const request = require('request');


const options = {
  method: 'POST',
  url: 'https://exchanger-api.fuspay.finance/api/v1/no-auth/PartnerP2P/SignRequestSha512',
  headers: {'Content-Type': 'application/json'},
  body: {
    partner_order_id: 'FUSPAY-00400-001-091-008',
    amount_to_collect: '30',
    timestamp: 1693285902419,
    order_expiration: 1693285902419,
    intrapay_merchant_id: "",
    partner_id: ""
    currency: 'NGN',
    partner_callback_url: 'https://webhook.site/xxxxxxxx',
    partner_redirect_url: 'https://google.com',
    secret: '4LJDHGA-SJTECNA-XXXX-XXXXsk_partner_ph25sjy-qtfeoxy-rqbvzyq-z-xx'
  },
  json: true
};

request(options, function (error, response, body) {
  if (error) throw new Error(error);

  console.log(body);
});
```

{% endtab %}
{% endtabs %}


---

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