> For the complete documentation index, see [llms.txt](https://sdk.venly.io/sdk-reference/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sdk.venly.io/sdk-reference/c-sdk-v3/function-references/wallet/signatures/signsignaturebyid.md).

# SignSignature (ById)

### Description

Executes a confirmed signature request by performing the cryptographic signing operation. It returns the completed signature in the appropriate format.

**Prerequisites:**

* Signature request must be in **READY** status (use confirm endpoint first)

{% code overflow="wrap" %}

```csharp
public static VyTask<VySignatureBase> SignSignature(string id, VySignSignatureRequest reqParams, VyUserAuth signingMethod)
```

{% endcode %}

{% tabs %}
{% tab title="Details" %}
**Parameters**

| id            | string                                                                                               | UUID of the signature request to execute                                   |
| ------------- | ---------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------- |
| reqParams     | [VySignSignatureRequest](/sdk-reference/c-sdk-v3/object-references/wallet/vysignsignaturerequest.md) | Request data for the operation                                             |
| signingMethod | VyUserAuth                                                                                           | This operation requires a valid Signing-Method from the corresponding user |

**Returns**

VyTask<[VySignatureBase](/sdk-reference/c-sdk-v3/object-references/wallet/vysignaturebase.md)>\
Signature signed successfully.
{% endtab %}
{% endtabs %}

## Relevant Functions

* [VyTask\<VyHexSignatureDto> SignSignature\_HexSignature (VySignSignatureRequest ...)](/sdk-reference/c-sdk-v3/function-references/wallet/signatures/signsignaturebyid/signsignature_hexsignature_0.md)
* [VyTask\<VyRawSignatureDto> SignSignature\_RawSignature (VySignSignatureRequest ...)](/sdk-reference/c-sdk-v3/function-references/wallet/signatures/signsignaturebyid/signsignature_rawsignature_1.md)
* [VyTask\<VySubmittedAndSignedTransactionSignatureDto> SignSignature\_SubmittedAndSignedTransactionSignature (VySignSignatureRequest ...)](/sdk-reference/c-sdk-v3/function-references/wallet/signatures/signsignaturebyid/signsignature_submittedandsignedtransactionsignature_2.md)
* [VyTask\<VyTransactionSignatureDto> SignSignature\_TransactionSignature (VySignSignatureRequest ...)](/sdk-reference/c-sdk-v3/function-references/wallet/signatures/signsignaturebyid/signsignature_transactionsignature_3.md)