[TLS 1.3] Update Migration Guide #3308
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This was referenced Feb 20, 2023
randombit
approved these changes
Feb 23, 2023
doc/migration_guide.rst
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| Starting with Botan 3.0 TLS 1.3 is supported. | ||
| This development required a number of backward-incompatible changes to | ||
| accomodate the protocol differences to TLS 1.2 which is still supported. |
doc/migration_guide.rst
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| """"""""""""""""""""""" | ||
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| The parameter `ocsp_responses` is now a vector of `std::optional<OCSP::Response>` | ||
| rather than potentially null `std::shared_ptr<OCSP::Response>`. |
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This is confusingly worded IMO in that it sounds like we are guaranteeing that the std::optionals are not nullopt, which is not the case, right?
Might be easier to just strike the "rather than potentially null":
The parameter
ocsp_responses, which was previouslystd::shared_ptr<OCSP::Response>, is now
std::optional<OCSP::Response>
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| The new parameter `offered_by_peer` identifies the key exchange groups a peer | ||
| has sent public exchange offerings for (in TLS 1.3 handshakes only). |
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Maybe include something like "In TLS 1.2, this vector is always empty" just so it's clear that this function is still called in TLS 1.2 (IIUC), just missing this information.
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Thanks. There will be more edits re: the session management. But merging for now. |
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That's merely a brain dump of the current state of incompatible API changes in the TLS stack. Note that it includes the (currently unmerged) changes in #3150 and #3140 (which are ready for review, btw. 😉). Feel free to edit my English. 😅
I'll do a review of the APIs in the coming days and might amend this as necessary.