With the removal of the interrupt perturbations in previous random32
change (random32: make prandom_u32() output unpredictable), the PRNG
has become 100% deterministic again. While SipHash is expected to be
way more robust against brute force than the previous Tausworthe LFSR,
there's still the ris
On 8/31/20 11:43 PM, Willy Tarreau wrote:
> With the removal of the interrupt perturbations in previous random32
> change (random32: make prandom_u32() output unpredictable), the PRNG
> has become 100% deterministic again. While SipHash is expected to be
> way more robust against brute force tha
Hi Eric,
On Tue, Sep 01, 2020 at 12:24:38PM +0200, Eric Dumazet wrote:
> There is not much entropy here really :
>
> 1) dev & txq are mostly constant on a typical host (at least the kind of
> hosts that is targeted by
> Amit Klein and others in their attacks.
>
> 2) len is also known by the at
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