- new tls.c/tls.h on the crypto ladder: wo_tls_record_seal/open
(RFC 8446 §5.2) — TLSInnerPlaintext (content||type, no padding),
5-byte header as AEAD additional-data, per-record nonce = iv XOR
seq big-endian (§5.3)
- suite dispatch: TLS_AES_128_GCM_SHA256 (mandatory) +
TLS_CHACHA20_POLY1305_SHA256 (AES-NI-less fallback), over phase-A AEAD
- open() strips trailing zero padding to recover the inner content type;
rejects a length-field lie before the AEAD, and auth failure after
- KAT vs python AEAD oracle (test/gen_tls_record.py): sealed record
byte-for-byte both suites, open() recovers it, 5-seq round-trip,
tamper + wrong-seq + bad-suite rejected. test_tls 51 pass, ASan/UBSan
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
(cherry picked from commit 5021a99f8359f78a642bb0cc2b28ab66f6b624e2)
