Re: A89: Re: How TI's keys work
[Prev][Next][Index][Thread]
Re: A89: Re: How TI's keys work
I wonder how a site like ticalc.org would generate that much money..
Bryan
----- Original Message -----
From: "mhlandry" <mhlandry@bellsouth.net>
To: <assembly-89@lists.ticalc.org>
Sent: Friday, December 03, 1999 3:19 PM
Subject: Re: A89: Re: How TI's keys work
>
> $300 and $100 for the educational version I believe.
> - Matt
>
> Bryan Rabeler wrote:
> >
> > And how much does the professional version cost?
> >
> > Bryan
> >
> > ----- Original Message -----
> > From: Mark Scott
> > To: 'assembly-89@lists.ticalc.org'
> > Sent: Thursday, December 02, 1999 10:51 PM
> > Subject: RE: A89: Re: How TI's keys work
> >
> > * ticalc.org or someone else puts together a fund drive,
> > buys professional version, then resells signing service for
> > $0.00 to people that submit programs *
> >
> > Mark E. Scott Jr.
> > mscott@databasecity.com
> >
> > -----Original Message-----
> > From: mhlandry [mailto:mhlandry@bellsouth.net]
> > Sent: Thursday, December 02, 1999 7:27 PM
> > To: assembly-89@lists.ticalc.org
> > Subject: Re: A89: Re: How TI's keys work
> >
> > TI may be crazy, but they were pretty smart when they came
> > up with
> > this application bit. They will not sign any applications
> > unless you
> > buy the Educational version (limited amoutn of signs) or the
> >
> > Professional version (unlimited). As someone previously
> > said, (I think
> > SMN) the signing is based on these certificates. You get a
> > certificate
> > with your calculators information, specifically the serial
> > number (I
> > think). Then they make the app so that it will run on a
> > calculator with
> > one specified serial number.
> > As to you question "Are they crazy?", No. Apps were
> > not meant for
> > games, but for professional software that could be developed
> > by
> > professionals (several professors with PHD's were on the sdk
> > beta team)
> > and sold to schools and the such. Although apps can be used
> > for games.
> > Hope this will clear things up.
> >
> > P.S - Someone please correct me if I was wrong on anything
> > (*cough* Dan
> > E. *cough*)
> >
> > - Matt
> >
> > Bryan Rabeler wrote:
> > >
> > > So are you saying that in genereal, TI won't sign apps if
> > you wrote them
> > > using the free SDK? Are they crazy? Do they want to stop
> > us from making
> > > games altogether?
> > >
> > > Bryan
> > >
> > > ----- Original Message -----
> > > From: "Scott Noveck" <noveck@pluto.njcc.com>
> > > To: <assembly-89@lists.ticalc.org>
> > > Sent: Thursday, December 02, 1999 4:14 PM
> > > Subject: A89: How TI's keys work
> > >
> > > >
> > > > Judging by the 83+ SDK beta, you guys are all waaaaay
> > off.
> > > >
> > > > First of all, the way app signing works is different
> > from what you've
> > > > described. The application itself is just modified to
> > tell the calc that
> > > it
> > > > requires some "certificate(s)" to run. The certificates
> > are what has to
> > > be
> > > > generated specifically for each serial number, and THESE
> > are heavily
> > > > encrypted. And I doubt you'll get anything at all out
> > of that.
> > > >
> > > > Second, TI does NOT just sign any app you send them.
> > Normally, they'll
> > > only
> > > > do it for those who BUY the SDK - for all other
> > purposes, the free SDK is
> > > > just a listing of ROM addresses. The 83+ apps out now -
> > like calcsys -
> > > were
> > > > signed because TI has given us SDK beta testers the
> > opportunity to get an
> > > > app signed for our work -- actually a fair decision on
> > their part.
> > > >
> > > > Also, the serial number on any HW1 calc can be changed.
> > The whole reason
> > > > HW2 was released is to fix the security bug allowing ROM
> > modification on
> > > old
> > > > calcs. FYI, it's the same bug Archive Utility uses, and
> > although no one's
> > > > tried yet the address is known (I've seen it somewhere)
> > and it COULD
> > > > theoretically be done.
> > > >
> > > > -Scott
> > > >
> > > >
> > > >
>
>
References: