Re: [quicwg/base-drafts] Initial secrets do not change after Retry (#2878)

Martin Thomson <> Tue, 09 July 2019 03:42 UTC

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From: Martin Thomson <>
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Subject: Re: [quicwg/base-drafts] Initial secrets do not change after Retry (#2878)
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martinthomson commented on this pull request.

I actually like this, but the intent of #2870 was to document the status quo.  If we do this (we should), then it probably also makes sense to describe the consequences for a stateless Retry.  That is not 100% obvious and probably needs a little bit of guidance.

> @@ -804,6 +803,9 @@ modifying the contents of packets from future versions.
 The HKDF-Expand-Label function defined in TLS 1.3 MUST be used for Initial
 packets even where the TLS versions offered do not include TLS 1.3.
+The secrets used for protecting Initial packets do not change during the
+connection, even after receiving a Retry.
 {{test-vectors-initial}} contains test vectors for the initial packet

Just down here (vv) there is a note that needs to be removed also.

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