# CryptEnumProviderTypes

```csharp
[DllImport("Advapi32.dll", SetLastError = true)][return: MarshalAs(UnmanagedType.Bool)]
public static extern bool CryptEnumProviderTypes(
   uint dwIndex,
   IntPtr pdwReserved,
   uint dwFlags,
   ref uint pdwProvType,
   StringBuilder pszTypeName,
   ref uint pcbTypeName
);
```

Microsoft documentation: [Link](https://docs.microsoft.com/en-us/windows/win32/api/wincrypt/nf-wincrypt-cryptenumprovidertypesa)