Getting permission from Dallas sounds fine to me. I have specific
permission for all code and data and background information currently used
in owfs and I wouldn't want to use any questionable techniques. At least in
the standard distribution.
Any contested or reverse-engineered components should be in a separate
version that is clearly labeled.
Besides, the people at Maxim have, in the past, been reasonably generous
with samples and advice and it would be discourteous to use their data
without permission.
Paul Alfille
On Wed, Nov 18, 2009 at 5:58 PM, Michael Markstaller <[email protected]> wrote:
> > -----Original Message-----
> > From: Paul Alfille [mailto:[email protected]]
> > Sent: Wednesday, November 18, 2009 11:35 PM
> > To: [email protected]
> > Subject: Re: [Owfs-developers] owfs-support for DS1961 SHA-1 iButtons
> >
> > Is it kosher to use a datasheet that the company doesn't
> > intentionally distribute?
> >
>
> Honestly don't know, at least absolutely not regarding US laws.
> The main issue is to find about the reason, why they do not publish it
> officially..
> Might be, they haven't understood cryptgraphy basics (known and proveable)
> or probably simply for some export-regulatory reasons.
>
> If it helps somehow, I can try to request the DS "officially" from Dallas
> with the specific application I head for (secure door access control with
> OSS software) and see what it takes to get it ?
> I can try to clarify this further tomorrow..
>
> Dallas should also have some interest in a little bit of help, I guess OWFS
> also helps them selling their pieces.
> And from cryptographic point of view, there's absolutely nothing in this DS
> what makes it reasonale to be worth hidden..
>
> Michael
>
>
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