I need two functions created in Delphi: one that can add a digital signature to an XML file, and one that can verify a digitally signed XML file. A zipfile with some more information about XML digital signatures is attached. The coder may use existing security procedures available in for example streamsec ([url removed, login to view]), secureblackbox ([url removed, login to view]), or LockBox ([url removed, login to view]).
1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done.
2) Exclusive and complete copyrights to all work purchased. (No GPL, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site).