Alright! Here we go! This video is the conclusion of the X.509 WiBisode series. You've learned how to created a signing certificate, export a public key, and sign an XML document. NOW it is time to take the public key and validate the signature. This technique is used to establish application trusts. The validating code is verifying that the document has arrived as it was intended (with no changes along the way) and that the document was "stamped" by a private key that YOU trust!