Virtual SmartCard Reader driver development

Hello
I'm writing a virtual SmartCard Reader driver for WinXP, the goal is
to pass APDU's through two interfaces : PC/SC <-> SerialPort(COM)

I've read a lot before posting, but i got all confused:

Firstly, a little confused about writing in WDM or WDF and the type of
driver (Function or Filter driver), in the end i chose writing in WDF
(KMDF) and a Function Driver, correct me if i got it wrong.

Secondly, from the WDK documentation/books i understood that i need to
write some kind of DEVICE_EXTENSION structure that is needed for WDF
Framework, AND some kind READER_EXTENSION structure that is used by
SMARTCARD_EXTENSION (typically for the SmartCard driver).
Problem is that i don't know how to write these.. didn't find any
rules and i don't know what is needed for everything to work.

Thirdly, my driver shows in Device Manager list but DOES NOT show in
available readers list in the applications, i've read that the driver
must register with "smclib" but i don't know what lines I need to
write to make it happen. (How to make the reader visible in the
applications that support PS/SC readers?)

Example code in WDK dosen't help any more, so i came here.
Any kind of help is welcome, thanks in advance
I'm a newbie on writing drivers and this is my first post, so please forgive any inconvenience and mistakes.
Lucas.

hi... just wondering whether u found answers for your Qs.. coz im also starting a similar project..

Yes, project is possible to do, KMDF is great option to do it. Second question requires reading some basic Driver Development books and WDK Help, Third requires really really REALLY good study of one example included in WDK.
Im preety stuck at my other post, but no answers suggest anoter more and more studying of that example.

Hi hash3d,

Can you explain your project in more detail? What do you mean by defining "virtual" smartcard reader? Don't you have the physical reader? or what?

And by "virtual" reader, do you need a "virtual" smartcard too? Can you share some information about your driver stack?

Well generally the idea was to make a connection between PC/SC interface and Serial interface on the kernel side with a possibility to choose what serial driver (COM port) the PC/SC interface is connected to.

There is some hardware, but it can be easily replaced by software on kernel level or user level, but the driver also works fine without any I call it a "virtual" one.

For normal user the driver is a standard SCReader driver, the stack isn't changed at all.

hello,

I want to develop a virtual smart card reader too, I've read your post. I didn't know I should implement a legacy device driver or a wdf type? I want a a virtual smart card reader that can insert, remove, do power operations and give back ATR sting? I don't know how system find my driver and use it? Could you explain about this questions? Could you please upload the source code of your driver? or send it to me? Thanks for advance.