AW: security code number generation

[Tiemo Hollmann TB]

First: Congratulations to Shao to the winner of the FIFA womens soccer world
championship: Japan!

As I understand Zygodact, or Peters or Shaos approach the user can pass on
his "name, etc." and the generated code to everyone else to unlock the
software.
How do you handle this issue? Is it just something "as is", is this scenario
so negligible in your customer base that you just can ignore it, or do you
count on the good in the people that they won't do it?
Would be of interest on how you handle this.
Tiemo



> -----Ursprüngliche Nachricht-----
> Von: use-livecode-bounces at lists.runrev.com [mailto:use-livecode-
> bounces at lists.runrev.com] Im Auftrag von Pete
> Gesendet: Montag, 18. Juli 2011 09:15
> An: How to use LiveCode
> Betreff: Re: security code number generation
> 
> Thanks Ken, that looks good.  I guess the other missing piece is how to
> control "demo" versions.  Expiration dates seem to be the most common, or
> maybe some limited function set.
> Pete
> Molly's Revenge <http://www.mollysrevenge.com>
> 
> 
> 
> 
> On Sun, Jul 17, 2011 at 10:48 PM, Ken Ray <kray at sonsothunder.com> wrote:
> 
> > > I'm looking for something to generate license codes for some software
I'm
> > > planning to sell.  Do you think this would work for that purpose?
> >
> > Take a look at Zygodact; it does exactly this plus it has a DropTool
> > component to make it a snap to work with.
> >
> > http://www.runrev.com/store/product/zygodact-1-0-4/
> >
> >
> > Ken Ray
> > Sons of Thunder Software, Inc.
> > Email: kray at sonsothunder.com
> > Web Site: http://www.sonsothunder.com/
> >
> >
> > > Pete
> > > Molly's Revenge <http://www.mollysrevenge.com>
> > >
> > >
> > >
> > >
> > > On Sat, Apr 2, 2011 at 9:51 AM, Peter Brigham MD <pmbrig at gmail.com>
> > wrote:
> > >
> > >> For anyone who might have the need, I have a handler I use to
generate a
> > >> security code, in my case for printed prescriptions. It takes the
name
> > of
> > >> the patient, the date of the prescription, the medication and med
> > strength
> > >> and hashes all that to produce a ten-digit alphanumeric string (using
> > 0-9,
> > >> a-z, A-Z). If there is any question about the validity of the
> > prescription I
> > >> can retrieve the correct code from the rx entry in my database with a
> > >> mouseclick (actually recalculating the code from the stored rx data)
and
> > >> confirm it with the pharmacy. This has proved useful on two occasions
> > when a
> > >> pt was playing fast and loose with his prescriptions.
> > >>
> > >> The algorithm is fast in LC, sufficiently obscure that I'm pretty
sure
> > it
> > >> would be hard to hack -- though of course few things are bulletproof
in
> > >> encryption if someone wants to try hard enough -- and discontinuous
in
> > the
> > >> sense that similar inputs do not generate similar outputs, eg, change
> > one
> > >> character in the input and the code number is completely different.
The
> > >> probability of coming up with the correct security number by chance
> > alone is
> > >> 1 in 10^15 (a million billion to 1). It could be adapted to any
number
> > of
> > >> purposes. I am not posting the handler here, since it would be unwise
to
> > let
> > >> it be archived and available, eg, with a Nabble search, but if anyone
is
> > >> interested, let me know and I'll share it.
> > >>
> > >> -- Peter
> > >>
> > >> Peter M. Brigham
> > >> pmbrig at gmail.com
> > >> http://home.comcast.net/~**pmbrig <http://home.comcast.net/~pmbrig>
> > >>
> > >>
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