# Blocker S00-022

- Original task: S00-004
- Root task: S00-004
- Reporter: auto-crypto-fe1c81c17ded
- Role: crypto
- Original owner: auto-crypto-fe1c81c17ded
- Waits for user/external condition: True

## Cause

S00-004 acceptance requires establishing legacy/OMEMO2 AND worker/wasm AND persistence without a homegrown ratchet. Reproduced (this run) probes and live public-registry queries confirm only the audited session/ratchet engine + persistence are verified (@signalapp/libsignal-client@0.105.0, Node native addon, zero .wasm). The browser/worker/WASM deployment and the OMEMO/OMEMO2 wire layer are not available from any maintained package on the reachable registry (@signalapp/libsignal, @converse/omemo, @xmpp/omemo, omemo2, omemo-js, omemo-client, omemo-top, omemo-wasm all E404). ENC-009 forbids a homegrown algorithm/ratchet and ENC-011 forbids substituting media AES-GCM for the OMEMO2 wire format, so the spike cannot synthesize a browser backend inside S00-004 scope.

## One remediation outcome

One independently reviewed, traceable primary-source outcome that establishes a verified browser/worker/WASM-capable OMEMO2 backend (a maintained library with a real web/WASM build and an OMEMO2/S ce-format mapping, or an approved external library/provider decision with license + support + browser constraints), preserving the verified audited session/ratchet engine and persistence from the existing spike, without a homegrown ratchet or ENC-009/ENC-011 bypass.

## Evidence / reproduction

cd experiments/0003-crypto-library && node session-probe/smoke.mjs (exit 0, SMOKE_PASS, 631-byte byte-for-byte session record) shows session/ratchet+persistence verified; node session-probe/wasm-unsupported.mjs (exit 2, wasmFiles:0, prebuilds native *.node only) shows browser/worker/WASM NOT established. npm view on live public registry: @signalapp/libsignal-client=0.105.0; @signalapp/libsignal=@converse/omemo=@xmpp/omemo=omemo2=omemo-js=omemo-client=omemo-top=omemo-wasm=E404. Details: see this run handoff and ADR 0003.

The reporting agent must stop now. A new agent implements only S00-022.