CryptAcquireContextA

[DllImport("Advapi32.dll", SetLastError = true)][return: MarshalAs(UnmanagedType.Bool)]
public static extern bool CryptAcquireContextA(
   out IntPtr phProv,
   string pszContainer,
   string pszProvider,
   uint dwProvType,
   uint dwFlags
);

Microsoft documentation: Link