Re: [quicwg/base-drafts] token-based greasing / initial packet protection (#3166)

Martin Thomson <> Wed, 30 October 2019 09:11 UTC

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From: Martin Thomson <>
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Subject: Re: [quicwg/base-drafts] token-based greasing / initial packet protection (#3166)
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martinthomson commented on this pull request.

> @@ -3940,6 +4007,19 @@ described in {{QUIC-TLS}}.  This protection does not provide confidentiality or
 integrity against on-path attackers, but provides some level of protection
 against off-path attackers.
+Additionally, the token is accompanied by a checksum.  This is because when a

The checksum can be provided by the server on its own.  The only reason you would provide a separate field for one is so that the client can validate it.  But the client can ensure that the NEW_TOKEN was not modified through packet protection.  Good to see this was removed :)

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