| Commit message (Collapse) | Author | Age | Files | Lines |
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ok beck@ tb@
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has been seen in the handshake so far. Use it for keyshare.
ok tb@
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extensions for tls1.3.
versions is currently defanged to ignore its result until tls13 server
side wired in full, so that server side code still works today when
we only support tls 1.2
ok bcook@ tb@ jsing@
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to the one I intended to commit
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- Make a separate sigalgs list for TLS 1.3 including only modern
algorithm choices which we use when the handshake will not negotiate
TLS 1.2
- Modify the legacy sigalgs for TLS 1.2 to include the RSA PSS algorithms as
mandated by RFC8446 when the handshake will permit negotiation of TLS 1.2
ok jsing@ tb@
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ok jsing@
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When the TLS extension code was rewritten, TLS extensions could only exist
in ClientHello and ServerHello messages - as such, they were named in pairs
of *_clienthello_{needs,build} which would be called by the client and
*_clienthello_parse. Likewise for *_serverhello_{needs,build} which would
be called by a server and *_serverhello_parse, which would be called by a
client.
Enter TLSv1.3 - TLS extensions can now exist in one of seven messages,
with only certain types being allowed to appear in each, meaning the naming
scheme no longer works. Instead, rename them to indicate the caller rather
than the message type - this effectively means:
clienthello_needs -> client_needs
clienthello_build -> client_build
clienthello_parse -> server_parse
serverhello_needs -> server_needs
serverhello_build -> server_build
serverhello_parse -> client_parse
ok beck@ tb@
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RFC 7919 renamed the Supported Elliptic Curves TLS extension to Supported
Groups and redefined it to include finite field DH (FFDH) in addition to
elliptic curve DH (ECDH). As such, rename the TLS extension and change the
associated code to refer to groups rather than curves.
ok beck@ tb@
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The RI logic gets pulled up into ssl3_get_server_hello() and
ssl_parse_serverhello_tlsext() gets replaced by tlsext_client_parse(),
which allows a CBS to be passed all the way down.
This also deduplicates the tlsext_client_build() and tlsext_server_build()
code.
ok beck@
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This removes ssl_parse_clienthello_tlsext() and allows the CBS to be
passed all the way through from ssl3_get_client_hello(). The renegotation
check gets pulled up into ssl3_get_client_hello() which is where other
such checks exist.
The TLS extension parsing now also ensures that we do not get duplicates
of any known extensions (the old pre-rewrite code only did this for some
extensions).
ok inoguchi@
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input + ok beck@, jsing@
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ok bcook@ beck@
input + ok jsing@
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ok jsing@
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ok beck@ doug@
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extension framework.
ok jsing@ beck@
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extension framework.
input + ok jsing@
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new extension framework.
input + ok jsing@
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and the new extension framework.
Feedback from doug@
ok inoguchi@
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Introduce a TLS extension handling framework that has per-extension type
functions to determine if an extension is needed, to build the extension
data and parse the extension data. This is somewhat analogous to BoringSSL,
however these build and parse functions are intentionally symetrical. The
framework is hooked into the existing TLS handling code in such a way that
we can gradual convert the extension handling code.
Convert the TLS Server Name Indication extension to the new framework,
while rewriting it to use CBB/CBS and be more strict in the process.
Discussed with beck@
ok inoguchi@
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