ECDSA support is currently required to run the tests because ECDSA
cipher suites are not filtered when determining the supported cipher
suites. Also required are ECDH groups.
TLS 1.3 uses HMAC-based Extract-and-Expand Key Derivation Function (HKDF)
as defined in RFC 5869 to compute traffic secrets.
Co-authored-by: bytinbit <[email protected]>