Export to pdf w digital signature

Hi, folks.

Does CR have an api for adding a digital signature to a report that is exported to a pdf? I will be using VS.NET 2005 w/ CR to programmatically populate the reports. After some research and searching on the web, I haven't seen anything explaining how to get the sig into the generated pdfs.

I will also have access to a standalone Pro version of CR, but it doesn't seem to have a way of doing this either, unless I missed it in the documentation.

Does the developer edition of CR have an api for this?

My client requires a digitally signed pdf document. There must be a way of programmatically doing this, right?

Thanks,

Lee...