> For the complete documentation index, see [llms.txt](https://merch-int.moneyhoney.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://merch-int.moneyhoney.io/api/auth/podpis.md).

# Подпись

**Подпись создается для обеспечения целостности запроса.** 

Подпись формируется путем объединения тела запроса и пути запроса с параметрами запроса, после чего выполняется хэширование с использованием алгоритма HMAC SHA-256 и секрета ( sign\_token) , предоставленного менеджером HM.

#### Пример:

```
{
  "amount": 123.456
}/v2/merchant/transactions?queryParam1=123&queryParam2=456
```

Для запросов с Content-Type = multipart/form-data,  для подписи используется только путь запроса с параметрами запроса.

####

#### Примеры кода для вычисления хэша: 

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

```python
import hashlib
import hmac
def calculate_signature(url, request_json, secret):
    request_json_string = json.dumps(request_json)
    parsed_url = urlparse(url)
    signature_string = request_json_string + parsed_url.path + parsed_url.query
    signature = hmac.new(secret.encode('utf-8'), signature_string.encode('utf-8'), hashlib.sha256).hexdigest()

    return signature
```

{% endtab %}

{% tab title="PHP" %}

```php
function calculateSignature($url, $requestJson, $secret) {
    $signatureString = $requestJson.parse_url($url, PHP_URL_PATH).parse_url($url, PHP_URL_QUERY);
    $signature = hash_hmac('sha256', $signatureString, $secret);
    return $signature;
}
```

{% endtab %}

{% tab title="JavaScript" %}

```javascript
const crypto = require('crypto');
function calculateSignature(url, requestJson, secret) {
 const signatureString = requestJson + url.pathname + url.search;
 const hmac = crypto.createHmac('sha256', secret);
 hmac.update(signatureString);
 return hmac.digest('hex');
}
```

{% endtab %}

{% tab title="C#" %}

```csharp
using System.Security.Cryptography;

public string CalculateSignature(string url, string requestJson, string secret)
{
    string signatureString = requestJson + url;

    using (var hmac = new HMACSHA256(Encoding.UTF8.GetBytes(secret)))
    {
        byte[] hashBytes = hmac.ComputeHash(Encoding.UTF8.GetBytes(signatureString));
        return Convert.ToBase64String(hashBytes);
    }
}
```

{% endtab %}

{% tab title="Java" %}

```java
import org.apache.commons.codec.digest.HmacUtils;
import org.apache.commons.codec.binary.Hex;
import java.net.URI;
import java.nio.charset.StandardCharsets;

public String calculateSignature(URI url, String requestJson, String secret) {
   String signatureString = requestJson + url.getPath() + url.getQuery();

   byte[] hmacSha256 = HmacUtils.hmacSha256(secret.getBytes(StandardCharsets.UTF_8), signatureString);
   
   return Hex.encodeHexString(hmacSha256);
}
```

{% endtab %}
{% endtabs %}


---

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