Can I verify an xml signature in Silverlight?

I have a requirement to validate an XML signature from within Silverlight. In full .NET, there are XmlDocument and SignedXml objects which can be used to perform this task. Seeing as the开发者_如何学JAVAse do not exist in Silverlight, is there another way to do this, perhaps using XDocument?

If you don't mind third-party solutions, one of the options is XMLBlackbox package of our SecureBlackbox. It supports XMLEnc, XMLDSig and XAdES and includes Silverlight assemblies.