Re: AEAD in ssh

[nisse%lysator.liu.se@localhost (Niels Möller)]

Bryan Ford <brynosaurus%gmail.com@localhost> writes:

> I see that in 3.1 on “Encrypting the packet length”, you’ve suggested
> the same approach as one of the earlier approaches I suggested a while
> ago in the corresponding TLS discussion. That’s a reasonable approach
> and I think would work, but I wanted to make sure you’re aware of
> another alternative that I’ve come to think is both cleaner and safer:
> just embed the length of the next packet within the normal
> AEAD-encrypted payload of its immediately prior packet.

Thanks for the update. 

This could make a lot of sense for a new protocol or for a larger
protocol update. But I think adding the length field to the preceding
packet is a too large structural change of the ssh protocol to do just
to support AEAD ciphers.

Regards,
/Niels

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