geni wrote:
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.
There have been many methods devised for sending an encryption key from
Alice to Bob without Eve being able to eavesdrop on it. This isn't the
problem that AACS is trying to solve, though. AACS is trying to send an
encryption key from Alice to Bob without _Bob_ being able to eavesdrop
on it.
This is a significantly more difficult problem, to say the least, and I
suspect it may well prove impossible to solve in the long term.