The XMLSpy Digital Signature Lite Plugin for XMLSpy adds a toolbar to the XML Editor which allows you to verify the digital signature of the active document. Use the button to select a certificate from the MY store of the system. The public key of this certificate will be used for all following verifications until you select a different certificate. If there is a current document available in the editor the button becomes enabled and allows to verify the digital signature if one is present in the document.