Re: [TLS] RFC8446 Fig3
"Martin Thomson" <mt@lowentropy.net> Fri, 03 May 2019 00:47 UTC
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Date: Thu, 02 May 2019 20:47:21 -0400
From: Martin Thomson <mt@lowentropy.net>
To: tls@ietf.org
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Subject: Re: [TLS] RFC8446 Fig3
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That's right. You might open an editorial erratum, which I would suggest be held for document update. Note that there is no promise that the list of extensions is complete, as this doesn't show the supported_versions or signature_schemes extension either, but the omission is probably not great in this case, since the PSK modes are highly relevant. On Fri, May 3, 2019, at 10:30, Daniel Migault wrote: > Hi, > > This might have already been mentioned on the list, but unless I > misinterpreter something it seems to me that the second handshake of > figure 3 is missing psk_key_exchange_modes extension. > > Yours, > Daniel > > Figure 3 shows a pair of handshakes in which the first handshake > establishes a PSK and the second handshake uses it: > Client Server > Initial Handshake: > ClientHello > + key_share --------> > ServerHello > + key_share > {EncryptedExtensions} > {CertificateRequest*} > {Certificate*} > {CertificateVerify*} > {Finished} > <-------- [Application Data*] > {Certificate*} > {CertificateVerify*} > {Finished} --------> > <-------- [NewSessionTicket] > [Application Data] <-------> [Application Data] > Subsequent Handshake: > ClientHello > + key_share* > + pre_shared_key --------> > ServerHello > + pre_shared_key > + key_share* > {EncryptedExtensions} > {Finished} > <-------- [Application Data*] > {Finished} --------> > [Application Data] <-------> [Application Data] > Figure 3: Message Flow for Resumption and PSK > > _______________________________________________ > TLS mailing list > TLS@ietf.org > https://www.ietf.org/mailman/listinfo/tls >
- [TLS] RFC8446 Fig3 Daniel Migault
- Re: [TLS] RFC8446 Fig3 Martin Thomson
- Re: [TLS] RFC8446 Fig3 Daniel Migault