Merge support for TLS1.3 (draft-ietf-tls-tls13-21)
This adds support for TLS1.3 handshake using draft-ietf-tls-tls13-21. It includes version negotiation, post handshake authentication, length hiding, multiple OCSP support, consistent ciphersuite support across protocols, Hello retry requests, ability to adjust key shares, certificate authorities extension, and key usage limits.
Remaining: PSK, session resumption, update to latest draft.
Checklist
-
Code modified for feature -
Test suite updated with functionality tests -
Documentation updated
Reviewer's checklist:
-
Any issues marked for closing are addressed -
There is a test suite reasonably covering new functionality or modifications -
Function naming, parameters, return values, types, etc., are consistent and according to CONTRIBUTION.md
-
This feature/change has adequate documentation added -
No obvious mistakes in the code