TLS CECPQ1 (experimental post-quantum) ciphers.

These exeperimental and non-standard ciphers are an experiment in
post-quantum key exchange for TLS only (not QUIC).  They are not
intended as a de facto standard and will be removed from Chrome in a
year or two.

The key exchange performs a New Hope (post-quantum) and X25519 key
exchange in parallel, using the outputs of both to generate the
pre-master secret.

BUG=

Review-Url: https://codereview.chromium.org/2101283004
Cr-Commit-Position: refs/heads/master@{#402705}
2 files changed