# 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](/sdk-reference/c-sdk-v3/object-references/wallet/vycreatesignaturerequest.md) | Request data for the operation                                             |
| ------------- | -------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------- |
| signingMethod | VyUserAuth                                                                                               | This operation requires a valid Signing-Method from the corresponding user |

**Returns**

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

## Relevant Functions

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


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