mainline 6.1.2 loosened its digest pin, unblocking hkdf 0.13 (which
needs digest 0.11). sha2 stays on the prerelease '=0.11.0-rc.5' to
match iroh-base's hard-pin; can drop the '=' once iroh-base relaxes.
HKDF-SHA256 KAT (keys_hkdf_kat_passphrase_abc_app_test_v1_k3) passes
byte-for-byte, so on-wire/on-disk key material is unchanged.
Updates the pinning rationale comment in Cargo.toml accordingly.
Passphrase-based peer rendezvous for iroh-gossip swarms over the public
Mainline DHT. Two nodes that share a passphrase + application salt find
each other and join the same gossip topic — no bootstrap server, no
prior knowledge of peer addresses.
The algorithm is a clock-free variant of HyParView-style partition
healing on BEP 44 mutable items, with K-sharded slots, logical aging
with random-tie eviction, vouching of up to V neighbors at age 1, and
a two-layer AEAD record envelope. Full spec in PROTOCOL.md.
Ships with:
* 119 tests (unit / property / integration / doctest) all green
* 100% mutation-testing catch rate (cargo-mutants)
* cargo-fuzz harnesses for the parse surface
* Kani proofs of no-UB / no-panic on crypto::epoch_of and
wire::decode_entries across their full symbolic input spaces
* Stateright distributed-system model: safety invariants S1 + S2
proved exhaustively for N ≤ 6, K ≤ 3; liveness witness under weak
fairness
* Miri green on the synchronous modules
* cargo-deny + cargo-audit clean
* criterion benches
* Full-matrix CI (Linux + macOS + Windows × stable + MSRV 1.93.0)
* Dedicated nightly lane for Miri / mutation / fuzz / Kani / Stateright
Pinned iroh 0.98.x. License MIT.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
swaits
