28694081755
96%

Ran 04 Jul 2026 03:54AM UTC

Jobs 1

Files 25

Run time 1min

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Committed 04 Jul 2026 03:48AM UTC coverage: 96.846% (+0.02%) from 96.824%

Build # 28694081755

Build Type

push

github

Committed by

floatdrop

Commit Message

tls: keylog capture + HKDF key derivation for kTLS (slice 2)

The bridge from OpenSSL's handshake to the kernel's record layer,
with no OpenSSL rebuild: the server context registers a keylog
callback (present in every build); a connection arms capture via
Channel.capture_secrets, pointing SSL ex_data slot 0 at a
caller-owned TrafficSecrets, and the callback parses the NSS-format
lines for CLIENT/SERVER_TRAFFIC_SECRET_0 (other labels fall through).
Channel.negotiated_cipher_suite exposes the IANA suite id.

kernel.zig gains derive_crypto_parameters: RFC 8446 §7.3
HKDF-Expand-Label (via std.crypto.tls.hkdfExpandLabel) turns a traffic
secret into the kernel crypto-info — key, 12-byte IV split as
salt(4)+iv(8), record sequence hard-zero (the §6 eligibility rule).
AES-128/256-GCM; ChaCha20 deferred.

Tests: exact-byte checks against the RFC 8448 1-RTT vectors for both
directions, error paths for unknown suites and wrong secret lengths,
and a live loopback handshake where both ends capture independently
and must derive byte-identical kernel parameters per direction (and
distinct ones across directions).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Coverage Stats

5373 of 5548 relevant lines covered (96.85%)

0.97 hits per line

Coverage Regressions

Lines	Coverage	∆	File
12	96.01	1.11%	tls/terminator.zig
6	96.36	2.13%	tls/kernel.zig
3	92.11	-7.89%	mem/futex_mutex.zig
3	95.96	0.0%	tls/openssl.zig

Jobs

ID	Job ID	Ran	Files	Coverage
1	28694081755.1	04 Jul 2026 03:54AM UTC	25	96.85	GitHub Action Run

floatdrop / zoxy / 28694081755
96%

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floatdrop / zoxy / 28694081755 96%

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