> For an application that involves electronic payment process, I would like
> to
> ask how is the architecture implemented in Secure Socket Layer (SSL)?
> I am new to it and hope can give me some ideas on how to go about that...
I use this: http://www.codeproject.com/aspnet/WebPageSecurity_v2.asp
> and also about the certificate and digital signature? Is it provided by
> some
> commercial services out there?
There are several:
http://www.verisign.com
http://www.thawte.com
http://www.geotrust.com/
Generally speaking, if your ISP supports SSL (and, if they don't, it's time
to change ISPs!) they will issue one for your site at a price...
Also, Microsoft supply a free SSL certificate for development and testing
purposes:
http://msdn2.microsoft.com/en-us/library/aa194055(office.11).aspx

Signature
http://www.markrae.net