Root cause: web client's bundle included OTPKs, so X3DH initiate()
did 4 DH ops (DH4 with OTPK). But decrypt_wire_message() called
respond() with None for OTPK, doing only 3 DH ops.
Different DH concat → different shared secret → decrypt fails.
Fix: web client bundles have one_time_pre_key: None.
initiate() skips DH4 when no OTPK present.
respond() also skips DH4 with None.
Both sides now do exactly 3 DH ops → shared secrets match.
OTPKs are an anti-replay optimization, not required for E2E.
Will add OTPK support to web client in Phase 2 with proper
server-side OTPK storage and consumption tracking.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Version shown on chat load (v0.0.2)
- Self-test now does step-by-step: X3DH shared secret comparison,
then manual ratchet init + decrypt (not via decrypt_wire_message)
- Shows: rng output, shared_match, alice/bob shared secrets, decrypt result
- This isolates whether X3DH or ratchet or AEAD fails
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
/selftest — runs full Alice→Bob encrypt/decrypt cycle within WASM
(tests X3DH + Double Ratchet + bincode serialize/deserialize)
/bundleinfo — dumps bundle contents, verifies SPK secret matches
SPK public key in the registered bundle
These help isolate whether the bug is in WASM crypto (self-test fails)
or in CLI↔WASM interop (self-test passes but cross-client fails).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Root cause: WASM was regenerating random pre-keys on every call to
decrypt_wire_message, instead of using the SPK that was registered
with the server. CLI sender encrypts to the registered SPK, but
WASM was trying to decrypt with a different random key.
Fix:
- WasmIdentity now stores spk_secret_bytes internally
- SPK secret persisted to localStorage as 'wz-spk'
- On load: restored from localStorage, not regenerated
- bundle_bytes() uses stored SPK secret (cached, deterministic)
- decrypt_wire_message() takes spk_secret_hex parameter
- Web UI passes stored SPK to all decrypt calls
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
warzone-wasm crate:
- Compiles warzone-protocol to WebAssembly via wasm-pack
- Exposes WasmIdentity, WasmSession, decrypt_wire_message to JS
- Same X25519 + ChaCha20-Poly1305 + X3DH + Double Ratchet as CLI
- 344KB WASM binary (optimized with wasm-opt)
WireMessage moved to warzone-protocol:
- Shared type used by CLI client, WASM bridge, and TUI
- Guarantees identical bincode serialization across all clients
Web client rewritten:
- Loads WASM module on startup (/wasm/warzone_wasm.js)
- Identity: WasmIdentity generates same key types as CLI
- Registration: sends bincode PreKeyBundle (same format as CLI)
- Encrypt: WasmSession.encrypt/encrypt_key_exchange
- Decrypt: decrypt_wire_message (handles KeyExchange + Message)
- Sessions persisted in localStorage (base64 ratchet state)
- Groups: per-member WASM encryption (interop with CLI members)
Server routes:
- GET /wasm/warzone_wasm.js — serves WASM JS glue
- GET /wasm/warzone_wasm_bg.wasm — serves WASM binary
- Both embedded at compile time via include_str!/include_bytes!
Web ↔ CLI interop now works:
- Same key exchange (X3DH with X25519)
- Same ratchet (Double Ratchet with ChaCha20-Poly1305)
- Same wire format (bincode WireMessage)
- Web user can message CLI user and vice versa
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
