Hello Friends,
  In the book, there's one example named creation of valid X509V3 certificate..
what's the use of that example ..? is there any further use of that example ..? After getting the message "valid certificate created" ..what is the use of it ..?

please do let me know ..
thanks..
Harmit..

Version 3 certificates are used for signature verification, CMS, S/MIME, and SSL/TLS.

You'll find the material from the example is revisited in a utility method in chapter 7 and you'll see further uses of version 3 certificates throughout the rest of the book.

Regards,

David