# Assinatura

### 🔐 Autenticação via HMAC

Cada requisição deve conter os seguintes headers:

| Header        | Tipo     | Descrição                                   |
| ------------- | -------- | ------------------------------------------- |
| `x-client-id` | `string` | Identificador exclusivo do parceiro         |
| `x-timestamp` | `string` | Timestamp UNIX (em segundos) da requisição  |
| `x-signature` | `string` | Assinatura HMAC gerada com o `clientSecret` |

#### 🧾 Como gerar a assinatura

A `stringToSign` usada para gerar a assinatura deve seguir a seguinte ordem exata:

METHOD + PATH + TIMESTAMP + CLIENT\_ID + BODY

* `METHOD`: método HTTP da requisição (ex: `POST`)
* `PATH`: caminho da URL (ex: `/api/partners/get-dolar`)
* `TIMESTAMP`: UNIX timestamp válido em segundos, com até 5 minutos de tolerância
* `CLIENT_ID`: mesmo valor enviado no header `x-client-id`
* `BODY`: conteúdo da requisição serializado com `JSON.stringify()` (mesmo que vazio `{}`)

{% tabs %}
{% tab title="Typescript" %}
{% code overflow="wrap" %}

```typescript
import CryptoJS from "crypto-js";
const method = "POST";
const path = "/api/partners/get-dolar";
const timestamp = "1746924610";
const clientId = "...";
const body = JSON.stringify({ usdtAmount: 10, quoteType: "DEPOSIT" });
const stringToSign = method + path + timestamp + clientId + body;
const clientSecret = "yourClientSecret";
const signature = CryptoJS.HmacSHA256(stringToSign, clientSecret).toString(CryptoJS.enc.Hex);
```

{% endcode %}
{% endtab %}

{% tab title="PHP" %}

```php
<?php
$method = "POST";
$path = "/api/partners/get-dolar";
$timestamp = "1746924610";
$clientId = "58BAAA...";
$body = '{"usdtAmount":10, "quoteType:"DEPOSIT"}';
$clientSecret = "suaChaveSecretaAqui";

$stringToSign = $method . $path . $timestamp . $clientId . $body;
$signature = hash_hmac('sha256', $stringToSign, $clientSecret);

echo "Signature: " . $signature;
?>
```

{% endtab %}
{% endtabs %}


---

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