On Wed, Sep 14, 2016 at 11:04 AM, Adams, Anne (DTI) <anne.ad...@state.de.us>
wrote:

> Hello friends,
>
> How can I determine where a software product is pulling the serial number
> of the hardware? We'd like to be able to run a z/VM guest (for DR) with the
> same serial number as our current mainframe. That way we don’t have to call
> for temporary license keys. However, our DR provider has warned us that
> some products will interrogate the physical hardware rather than what the
> OS is holding or what I have in the iodf. Any way beforehand to see where
> those values are coming from?
>

​Of course, I can't say for certain, but my best guess (FWIW) is that most
products today use the Store System Information instruction (STSI). Most of
this information is available to z/OS program via the CSRSI callable
service.
https://www.ibm.com/support/knowledgecenter/SSLTBW_2.2.0/com.ibm.zos.v2r2.ieaa100/CSRSI_Description.htm
https://www.ibm.com/support/knowledgecenter/SSLTBW_2.2.0/com.ibm.zos.v2r2.iead100/iead100476.htm

How to really tell for a particular piece of software? Well, being a very
old time, low-level, sort of person, I'd likely run the software (or the
key validation part if that is separate) under a program I would write
which would use the PER hardware to do an instruction trace. Figuring out
how to do this is an exercise (in futility?) left to the reader.

As others have said, doing this would most likely violate your licensing
agreement, even if it is possible. It would be no different from
disassembling the code and simply zapping the license check to return
"valid". Many vendors are now making it possible to get emergency keys via
a web portal so you don't need to actually talk to a human immediately. If
getting a D.R. key is a problem, that is a vendor customer support issue.
I'd basically tell them "fix it or I will do my best to replace all your
products." I understand the need for keys due to "bad" customers (not
paying or paying late), but I still dislike keys. I loved how one book
publisher did their DRM. They would take an order from you and you'd get a
download URL for the book. It was customized with your name, a serial
number, and a note at the back that they paid if told about piracy of their
material. So you really needed to trust anybody you "gave" the book to.



> Thanks.
>
> Anne R Adams, CISSP
> DTI, Systems Engineering
> Sr. Mainframe Services Analyst
> 302.298.3196
>
>


-- 
Unix: Some say the learning curve is steep, but you only have to climb it
once. -- Karl Lehenbauer
Unicode: http://xkcd.com/1726/

Maranatha! <><
John McKown

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