[Cryptech Tech] Padding in hash cores?

[Randy Bush]

> When I say HW, I mean blue+green. So what I'm saying seems reasonable
> to me is to pad in green, to avoid having to do it in all instances of
> yellow.

ack

the upstack attacks i see are all insertion of predictable cleartext.
an attacker who can insert that at the end of a stream in place of some
of the pad can just as easily increase the length of the whole stream
unless it contains consistency data.

randy