tree 99a8b337cdf5fcb3f23374b3100ed8e3ea295e19
parent fedf201e12960bd2fab0596422851b20a8d80d20
author Dave Watson <davejwatson@fb.com> 1548885511 +0000
committer David S. Miller <davem@davemloft.net> 1549062055 -0800

net: tls: Add tls 1.3 support

TLS 1.3 has minor changes from TLS 1.2 at the record layer.

* Header now hardcodes the same version and application content type in
  the header.
* The real content type is appended after the data, before encryption (or
  after decryption).
* The IV is xored with the sequence number, instead of concatinating four
  bytes of IV with the explicit IV.
* Zero-padding:  No exlicit length is given, we search backwards from the
  end of the decrypted data for the first non-zero byte, which is the
  content type.  Currently recv supports reading zero-padding, but there
  is no way for send to add zero padding.

Signed-off-by: Dave Watson <davejwatson@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>