Yahoo Groups archive
Thread
2004-12-21 by ggindele
I think we reached the consensus (with a little Philips help) that code protection is available only in the 64 pin package, when the boot loader >= 1.63 I wonder would that be a commercially reasonable protection when 2106 is used with an external electronic serial number. The flash can be customized to accept only the right serial number, but there's no code protection against JTAG attack. What do you think? How long would it hold?
2004-12-21 by onestone
Ultimately it is impossible to totally protect code. Perhaps the best you can prove is that somebody actually ripped you off. I routinely embed a copyright notice that is encrypted. The notice is functional, working code that cannot be removed easily. Does not appear as any kind of sensible ASCII, yet is revealed by a simple key. I also repeat the same messages in plain text. Which may help to reveal 'holes' in the memory map. Al ggindele wrote:
> > I think we reached the consensus (with a little Philips help) that > code protection is available only in the 64 pin package, when the boot > loader >= 1.63 > > I wonder would that be a commercially reasonable protection when 2106 > is used with an external electronic serial number. The flash can be > customized to accept only the right serial number, but there's no code > protection against JTAG attack. > > What do you think? How long would it hold? > > > > > > > Yahoo! Groups Sponsor > ADVERTISEMENT > <http://us.ard.yahoo.com/SIG=1297p65qp/M=298184.5639630.6699735.3001176/D=groups/S=1706554205:HM/EXP=1103742242/A=2495208/R=0/SIG=11egg01lg/*http://www.netflix.com/Default?mqso=60188914> > > > ------------------------------------------------------------------------ > Yahoo! Groups Links > > * To visit your group on the web, go to: > http://groups.yahoo.com/group/lpc2000/ > > * To unsubscribe from this group, send an email to: > lpc2000-unsubscribe@yahoogroups.com > <mailto:lpc2000-unsubscribe@yahoogroups.com?subject=Unsubscribe> > > * Your use of Yahoo! Groups is subject to the Yahoo! Terms of > Service <http://docs.yahoo.com/info/terms/>. > >
2004-12-21 by ggindele
How good is that if the product was ripped off let's say in China? Any litigation seems to extremely difficult. --- In lpc2000@yahoogroups.com, onestone <onestone@b...> wrote: > Ultimately it is impossible to totally protect code. Perhaps the best > you can prove is that somebody actually ripped you off. I routinely > embed a copyright notice that is encrypted. The notice is functional, > working code that cannot be removed easily. Does not appear as any kind > of sensible ASCII, yet is revealed by a simple key. I also repeat the > same messages in plain text. Which may help to reveal 'holes' in the > memory map. > > Al > > ggindele wrote: > > > > > I think we reached the consensus (with a little Philips help) that > > code protection is available only in the 64 pin package, when the boot > > loader >= 1.63 > > > > I wonder would that be a commercially reasonable protection when 2106 > > is used with an external electronic serial number. The flash can be > > customized to accept only the right serial number, but there's no code > > protection against JTAG attack. > > > > What do you think? How long would it hold? > > > > > > > > > > > > > > Yahoo! Groups Sponsor > > ADVERTISEMENT > > <http://us.ard.yahoo.com/SIG=1297p65qp/M=298184.5639630.6699735.3001176/D=groups/S=1706554205:HM/EXP=1103742242/A=2495208/R=0/SIG=11egg01lg/*http://www.netflix.com/Default?mqso=60188914> > > > > > > ------------------------------------------------------------------------
> > Yahoo! Groups Links > > > > * To visit your group on the web, go to: > > http://groups.yahoo.com/group/lpc2000/ > > > > * To unsubscribe from this group, send an email to: > > lpc2000-unsubscribe@yahoogroups.com > > <mailto:lpc2000-unsubscribe@yahoogroups.com?subject=Unsubscribe> > > > > * Your use of Yahoo! Groups is subject to the Yahoo! Terms of > > Service <http://docs.yahoo.com/info/terms/>. > > > >
2004-12-21 by Matthias Weingart
Thx Al, now I know where I have to look for :-)
M.
On Tue, Dec 21, 2004 at 10:51:32PM -0000, ggindele wrote:
> How good is that if the product was ripped off let's say in China? Any
> litigation seems to extremely difficult.
>
> --- In lpc2000@yahoogroups.com, onestone <onestone@b...> wrote:
> > Ultimately it is impossible to totally protect code. Perhaps the best
> > you can prove is that somebody actually ripped you off. I routinely
> > embed a copyright notice that is encrypted. The notice is functional,
> > working code that cannot be removed easily. Does not appear as any kind
> > of sensible ASCII, yet is revealed by a simple key. I also repeat the
> > same messages in plain text. Which may help to reveal 'holes' in the
> > memory map.
> >
> > Al
> >
> > ggindele wrote:
> >
> > >
> > > I think we reached the consensus (with a little Philips help) that
> > > code protection is available only in the 64 pin package, when the boot
> > > loader >= 1.63
> > >
> > > I wonder would that be a commercially reasonable protection when 2106
> > > is used with an external electronic serial number. The flash can be
> > > customized to accept only the right serial number, but there's no code
> > > protection against JTAG attack.
> > >
> > > What do you think? How long would it hold?
> > >
> > >
> > >
> > >
> > >
> > >
> > > Yahoo! Groups Sponsor
> > > ADVERTISEMENT
> > >
> <http://us.ard.yahoo.com/SIG=1297p65qp/M=298184.5639630.6699735.3001176/D=groups/S=1706554205:HM/EXP=1103742242/A=2495208/R=0/SIG=11egg01lg/*http://www.netflix.com/Default?mqso=60188914>
> > >
> > >
> > >
> ------------------------------------------------------------------------
> > > Yahoo! Groups Links
> > >
> > > * To visit your group on the web, go to:
> > > http://groups.yahoo.com/group/lpc2000/
> > >
> > > * To unsubscribe from this group, send an email to:
> > > lpc2000-unsubscribe@yahoogroups.com
> > > <mailto:lpc2000-unsubscribe@yahoogroups.com?subject=Unsubscribe>
> > >
> > > * Your use of Yahoo! Groups is subject to the Yahoo! Terms of
> > > Service <http://docs.yahoo.com/info/terms/>.
> > >
> > >
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
Matthias2004-12-22 by onestone
Well since you cannot produce a secure system anyway, any system can be copied, it at least allows you to prevent the products being sold in countries which recognise international property rights. It is better than nothing, and harder to crack than most chip based schemes. I don't believe for one second that it is foolproof, nothing is. Even if I can't crack your security I'm damned sure I can functionally duplicate your product without breeching patent laws. Litigation may be easier in chana than,sa y, the US. In china you only have to find the right 'partner' with more clout than the rip-off artist. In America you have to have deep enough pockets to sustain a pack of lawyers. I know where I'd rather take my chances. Al ggindele wrote:
> > How good is that if the product was ripped off let's say in China? Any > litigation seems to extremely difficult. > > --- In lpc2000@yahoogroups.com, onestone <onestone@b...> wrote: > > Ultimately it is impossible to totally protect code. Perhaps the best > > you can prove is that somebody actually ripped you off. I routinely > > embed a copyright notice that is encrypted. The notice is functional, > > working code that cannot be removed easily. Does not appear as any kind > > of sensible ASCII, yet is revealed by a simple key. I also repeat the > > same messages in plain text. Which may help to reveal 'holes' in the > > memory map. > > > > Al > > > > ggindele wrote: > > > > > > > > I think we reached the consensus (with a little Philips help) that > > > code protection is available only in the 64 pin package, when the boot > > > loader >= 1.63 > > > > > > I wonder would that be a commercially reasonable protection when 2106 > > > is used with an external electronic serial number. The flash can be > > > customized to accept only the right serial number, but there's no code > > > protection against JTAG attack. > > > > > > What do you think? How long would it hold? > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Sponsor > > > ADVERTISEMENT > > > > <http://us.ard.yahoo.com/SIG=1297p65qp/M=298184.5639630.6699735.3001176/D=groups/S=1706554205:HM/EXP=1103742242/A=2495208/R=0/SIG=11egg01lg/*http://www.netflix.com/Default?mqso=60188914> > > > > > > > > > > ------------------------------------------------------------------------ > > > Yahoo! Groups Links > > > > > > * To visit your group on the web, go to: > > > http://groups.yahoo.com/group/lpc2000/ > > > > > > * To unsubscribe from this group, send an email to: > > > lpc2000-unsubscribe@yahoogroups.com > > > <mailto:lpc2000-unsubscribe@yahoogroups.com?subject=Unsubscribe> > > > > > > * Your use of Yahoo! Groups is subject to the Yahoo! Terms of > > > Service <http://docs.yahoo.com/info/terms/>. > > > > > > > > > > > Yahoo! Groups Sponsor > ADVERTISEMENT > <http://us.ard.yahoo.com/SIG=12987chi3/M=295196.4901138.6071305.3001176/D=groups/S=1706554205:HM/EXP=1103755962/A=2128215/R=0/SIG=10se96mf6/*http://companion.yahoo.com> > > > ------------------------------------------------------------------------ > Yahoo! Groups Links > > * To visit your group on the web, go to: > http://groups.yahoo.com/group/lpc2000/ > > * To unsubscribe from this group, send an email to: > lpc2000-unsubscribe@yahoogroups.com > <mailto:lpc2000-unsubscribe@yahoogroups.com?subject=Unsubscribe> > > * Your use of Yahoo! Groups is subject to the Yahoo! Terms of > Service <http://docs.yahoo.com/info/terms/>. > >
2004-12-22 by onestone
Hi Matthias, even knowing it's there it would be damned hard to find out where. Al Matthias Weingart wrote:
> Thx Al, now I know where I have to look for :-) > > M. > > On Tue, Dec 21, 2004 at 10:51:32PM -0000, ggindele wrote: > > How good is that if the product was ripped off let's say in China? Any > > litigation seems to extremely difficult. > > > > --- In lpc2000@yahoogroups.com, onestone <onestone@b...> wrote: > > > Ultimately it is impossible to totally protect code. Perhaps the best > > > you can prove is that somebody actually ripped you off. I routinely > > > embed a copyright notice that is encrypted. The notice is functional, > > > working code that cannot be removed easily. Does not appear as any > kind > > > of sensible ASCII, yet is revealed by a simple key. I also repeat the > > > same messages in plain text. Which may help to reveal 'holes' in the > > > memory map. > > > > > > Al > > > > > > ggindele wrote: > > > > > > > > > > > I think we reached the consensus (with a little Philips help) that > > > > code protection is available only in the 64 pin package, when the > boot > > > > loader >= 1.63 > > > > > > > > I wonder would that be a commercially reasonable protection when 2106 > > > > is used with an external electronic serial number. The flash can be > > > > customized to accept only the right serial number, but there's no > code > > > > protection against JTAG attack. > > > > > > > > What do you think? How long would it hold? > > > > > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Sponsor > > > > ADVERTISEMENT > > > > > > > <http://us.ard.yahoo.com/SIG=1297p65qp/M=298184.5639630.6699735.3001176/D=groups/S=1706554205:HM/EXP=1103742242/A=2495208/R=0/SIG=11egg01lg/*http://www.netflix.com/Default?mqso=60188914> > > > > > > > > > > > > > > ------------------------------------------------------------------------ > > > > Yahoo! Groups Links > > > > > > > > * To visit your group on the web, go to: > > > > http://groups.yahoo.com/group/lpc2000/ > > > > > > > > * To unsubscribe from this group, send an email to: > > > > lpc2000-unsubscribe@yahoogroups.com > > > > > <mailto:lpc2000-unsubscribe@yahoogroups.com?subject=Unsubscribe> > > > > > > > > * Your use of Yahoo! Groups is subject to the Yahoo! Terms of > > > > Service <http://docs.yahoo.com/info/terms/>. > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > Matthias > > Yahoo! Groups Sponsor > ADVERTISEMENT > <http://us.ard.yahoo.com/SIG=129657o8t/M=294855.5468653.6549235.3001176/D=groups/S=1706554205:HM/EXP=1103757687/A=2455396/R=0/SIG=119u9qmi7/*http://smallbusiness.yahoo.com/domains/> > > > ------------------------------------------------------------------------ > Yahoo! Groups Links > > * To visit your group on the web, go to: > http://groups.yahoo.com/group/lpc2000/ > > * To unsubscribe from this group, send an email to: > lpc2000-unsubscribe@yahoogroups.com > <mailto:lpc2000-unsubscribe@yahoogroups.com?subject=Unsubscribe> > > * Your use of Yahoo! Groups is subject to the Yahoo! Terms of > Service <http://docs.yahoo.com/info/terms/>. > >