First round of my stupid questions about NTS

[Richard Laager]

On 1/18/19 4:44 PM, Gary E. Miller via devel wrote:
> Maybe we want to derive C2S and S2C from the TLS session, but I do not
> see that as mandated.

Am I reading the right draft:
https://tools.ietf.org/html/draft-ietf-ntp-using-nts-for-ntp-15#section-5.1

If so, it is definitely mandated by "SHALL":

5.1.  Key Extraction (for NTPv4)

   Following a successful run of the NTS-KE protocol wherein Protocol ID
   0 (NTPv4) is selected as a Next Protocol, two AEAD keys SHALL be
   extracted: a client-to-server (C2S) key and a server-to-client (S2C)
   key.  These keys SHALL be computed according to RFC 5705 [RFC5705],
   using the following inputs.

-- 
Richard

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