[Cryptography] ratcheting DH strengths over time

[John-Mark Gurney]

Ryan Carboni wrote this message on Mon, Nov 16, 2015 at 14:02 -0800:
> >
> > We didn't understand what they guaranteed. CBC in particular has
> > proven much more problematic than was assumed 25 years ago.
> >
> >
> Please be more specific. Outside of birthday attacks, what problems does
> CBC have?

A padding oracle attack is one major problem that CBC has had:
https://en.wikipedia.org/wiki/Padding_oracle_attack

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."