Add TLS 1.3 support (basic)

[romain-perez]

This PR adds new TLS 1.3 messages and extensions and support only basic 1-RTT handshake :

• Update the key schedule
• Update the parsing of TLS 1.3 extensions
• Add authentication and verification of additional data
• tls13.uts is test vectors for Simple 1-RTT Handshake (section 3, RFC8448)

TODO (next PRs) :

• Client and server TLS 1.3 automatons
• Support for 0-RTT
• Support HelloRetryRequest
• Support for client authentication

[guedou]

It seems that most of the tests fail due to random errors in the TLS 1.3 automaton.

You can fix the tests named py27-linux_non_root_old-cryptography either:

• by using the crypto_advanced on top of tls13.uts or for relevant tests such as Decrypt a TLS 1.3 session - Parse server Hello
• adding the -T tls13.uts argument at https://github.com/secdev/scapy/blob/master/tox.ini#L102

All ways are fine and mean "do not use the old cryptography module to perform TLS 1.3 tests".

[codecov]

Codecov Report

Merging #2146 into master will decrease coverage by 0.36%.
The diff coverage is 49.61%.

@@            Coverage Diff            @@
##           master   #2146      +/-   ##
=========================================
- Coverage   87.36%     87%   -0.37%     
=========================================
  Files         200     200              
  Lines       45454   45617     +163     
=========================================
- Hits        39711   39687      -24     
- Misses       5743    5930     +187

Impacted Files	Coverage Δ
scapy/layers/tls/crypto/hkdf.py	82.22% <100%> (-17.78%)	⬇️
scapy/layers/tls/keyexchange.py	82.75% <100%> (-0.22%)	⬇️
scapy/layers/tls/session.py	69.21% <24.63%> (-9.09%)	⬇️
scapy/layers/tls/crypto/cipher_aead.py	81.73% <25%> (-0.2%)	⬇️
scapy/layers/tls/keyexchange_tls13.py	46.11% <31.25%> (-8.54%)	⬇️
scapy/layers/tls/handshake.py	69.72% <49.09%> (-11.35%)	⬇️
scapy/layers/tls/record.py	89.27% <73.33%> (-2.83%)	⬇️
scapy/layers/tls/record_tls13.py	63.33% <78.57%> (+2.97%)	⬆️
scapy/layers/tls/extensions.py	81.04% <96.29%> (+1.25%)	⬆️
... and 13 more

[guedou]

Awesome PR! I am glad that we will be able to include it in v2.4.3.

[guedou]

Nice PR thanks for your answers!

[guedou]

@gpotter2 @p-l- what is your call?

[gpotter2]

Really awesome PR !
I only have one comment