# CreateSignature

### Description

Creates and optionally executes cryptographic signatures for blockchain messages and structured data.

**Supported signature types:**

* **Message signing**:\ Plain text message signing using personal\_sign method
* **EIP-712**:\ Ethereum typed structured data signing for improved security and usability

{% code overflow="wrap" %}

```csharp
public static VyTask<VyCreateSignatureBase> CreateSignature(VyCreateSignatureRequest reqParams, VyUserAuth signingMethod)
```

{% endcode %}

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

| reqParams     | [VyCreateSignatureRequest](https://sdk.venly.io/sdk-reference/c-sdk-v3/object-references/wallet/vycreatesignaturerequest) | Request data for the operation                                             |
| ------------- | ------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------- |
| signingMethod | VyUserAuth                                                                                                                | This operation requires a valid Signing-Method from the corresponding user |

**Returns**

VyTask<[VyCreateSignatureBase](https://sdk.venly.io/sdk-reference/c-sdk-v3/object-references/wallet/vycreatesignaturebase)>\
Signature created and signed successfully.
{% endtab %}
{% endtabs %}

## Relevant Functions

* [VyTask\<VySavedOrReadySignatureResponse> CreateSignature (VyCreateSignatureRequest ...)](https://sdk.venly.io/sdk-reference/c-sdk-v3/function-references/wallet/signatures/createsignature/createsignature_0)
* [VyTask\<VyExecutedSignatureResponse> CreateSignature (VyCreateSignatureRequest ...)](https://sdk.venly.io/sdk-reference/c-sdk-v3/function-references/wallet/signatures/createsignature/createsignature_1)