[Zope] Digital Signature

Dear List I want to digitally sign some data on my Zope Server, so that client-programs may know that the documents are comming from me. \Oliver --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.371 / Virus Database: 206 - Release Date: 13-06-2002