[U-Boot] U-book and GPLv3? (fwd)

Mike Frysinger
2009-06-25T13:56:11Z

On Thursday 25 June 2009 07:22:10 Detlev Zundel wrote:
> > On Wednesday 24 June 2009 12:45:38 Detlev Zundel wrote:
> >> > It is secure because only authenticated code is allowed to be
> >> > executed, thus another step to avoid piracy, hacking of conditional
> >> > access systems etc.
> >>
> >> Running only authenticated code does *not* ensure security, no matter
> >> how much this is wished for.
> >>
> >> But no matter, I now understand that "security" seems to mean "data can
> >> only be handled in the way intended by the owners of the data" which is
> >> a different concept to me.
> >
> > you ignored my simple straightforward example where both authenticity and
> > security is provided. cpu only loads signed u-boot -- authenticity.
> > u-boot only loads encrypted signed binaries -- security and authenticity.
> > since the binaries stay inside of the CPU, for all practical (and then
> > some) purposes, the decrypted binary will never be discovered from this
> > system.
>
> Obviously we differ in what "security" means. Where I used security as
> an attribute of a communications channel which seems to be a popular
> interpretation in computer science, you interpret "security" to mean
> "not discoverable from outside the device". The latter interpretation
> is used in the DRM systems trying to rub off the good annotations of
> "security" onto those systems - but still it is not synonymous to
> "security" for me.

you really should use the standard terms of the trade then, otherwise you will
just keep confusing people.
http://en.wikipedia.org/wiki/Information_security#Basic_principles
-mike
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