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Incorporate the accepted parts of PR #1357. Closes #1357. #1363

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merged 8 commits into from
Jul 31, 2024

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ekr
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@ekr ekr commented Jul 27, 2024

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ekr commented Jul 27, 2024

but MAY do so if the client's advertisement permits it,
and MUST NOT do so otherwise.
This fallback chain MUST NOT use the deprecated SHA-1 hash,
except if advertised by the client, in which case it MAY.
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This phrasing is weird. You could just say:

This fallback chain MUST NOT use the deprecated SHA-1 hash,
unless the client specifically advertises that it is willing to accept SHA-1.

The "MAY" bit is implied.

@@ -2932,7 +2933,7 @@ for each scenario:
|------|-------------------|----------|
| Server | ClientHello ... later of EncryptedExtensions/CertificateRequest | server_handshake_traffic_secret |
| Client | ClientHello ... later of server Finished/EndOfEarlyData | client_handshake_traffic_secret |
| Post-Handshake | ClientHello ... client Finished + CertificateRequest | client_application_traffic_secret_N |
| Post-Handshake | ClientHello ... client Finished + CertificateRequest | [sender]_application_traffic_secret_N |
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Suggested change
| Post-Handshake | ClientHello ... client Finished + CertificateRequest | [sender]_application_traffic_secret_N |
| Post-Handshake | ClientHello ... client Finished + CertificateRequest | \[sender]_application_traffic_secret_N |

I'm not 100% on this, but I think that you need this.

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It seems to compile OK without this.

image

draft-ietf-tls-rfc8446bis.md Outdated Show resolved Hide resolved
ekr and others added 2 commits July 30, 2024 18:27
Co-authored-by: Martin Thomson <mt@lowentropy.net>
@ekr ekr merged commit 659cd26 into tlswg:main Jul 31, 2024
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3 participants