On 5/6/07, Peter Ansell <ansell.peter(a)gmail.com> wrote:
Of course to do this they need to invalidate machines
which were coded
with the old keys, or risk giving the keys to an architecture which is
considered unsafe. If I really wanted to upgrade my physical box of a
HDDVD player each time one of these attacks occured I might think
about it. But I would rather be able to purchase content which works,
and will work in the future, on multiple machines. I am surprised that
the whole sony copy protected CD thing hasn't come up yet. Sony were
told they weren't allowed to restrict who could play what CD's to
their special players, and it will only be time before the same
control restrictions are taken off and keys must be kept continuously
in order for people to continually be able to use the content that
they purchased legally.
May not happen tommorrow, but it will happen.
Peter
Maybe not. What you have described is just another type of key
distribution problem. Until RSA no one outside GCHQ knew that such
problems could be solved. Perhaps someone will come up with a way to
solve the one you describe as well.
--
geni