> For the complete documentation index, see [llms.txt](https://docs.soraco.co/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.soraco.co/docs/api-reference/.net-api/iqlmproductproperties/methods/validatesignature.md).

# ValidateSignature

### Description

Adds a new product property.

```csharp
bool ValidateSignature(string xmlValue, string publicKey, out string errorMessage)
```

### Parameters

| Parameter    |  Type  | Description                                      |
| ------------ | :----: | ------------------------------------------------ |
| xmlValue     | string | xml fragment representing the product properties |
| publicKey    | string | the RSA public key                               |
| errorMessage | string | returned error message if the validation failed  |

### Return

| Type | Description                                      |
| ---- | ------------------------------------------------ |
| bool | true if the signature is valid; otherwise false. |