Files
echolot/echolot-app
mrambossekandClaude Fable 5 c19f382640 privacy: scrub identifiers inside raw shell output
Running the Shizuku tier for the first time uploaded every MAC address on the
local network to the server at the balanced level - fourteen of them, router and
all. The probes embed raw command output verbatim (ip neigh, ip route), which is
good evidence and also a complete household device inventory, and the anonymizer
could not see it: classification is by field name and whole-value shape, and
ip_neigh is one long string that is itself neither a MAC nor an address.

measurement-schema.md flagged raw dumps as hard to anonymize and proposed
dropping them from exports. Scrubbing is better: identifiers inside unclassified
strings are replaced in place with the same pseudonyms used elsewhere, so a MAC
appearing in both a parsed field and a raw dump still reads as one device, and
the dump stays readable - neighbour-table shape, host count, RFC1918 addresses
and vendor prefixes all survive. Dropping it would have protected the same data
by destroying the reason for collecting it.

One pass, not three: sequential passes re-process their own output. Once a MAC
became 78:9a:18:xx:yy:zz the IPv6 pattern matched it - six hex groups separated
by colons is an address - and destroyed the vendor prefix the MAC rule had just
preserved. Ordered alternation resolves each position once, MAC first.

RealDocumentTest runs the anonymizer over a captured run when ECHOLOT_REAL_RUN
points at one and fails on any surviving MAC; it self-skips otherwise so no
one's network lands in the repo. Against the document that leaked: 14 in, 0 out.

Also: the Settings preview button did nothing, reading UiState.history which is
empty until the History screen has been opened - same root cause as the "0
run(s)" count. It reads the archive now, and says when there is nothing to show.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-08-01 16:12:13 +02:00
..

Echolot app

The production Android client (spec). Native Kotlin + Jetpack Compose. Multi-module; built bottom-up from a verifiable protocol spine.

Modules

Module Type Status
core-protocol pure Kotlin/JVM done — client half of probe-protocol.md, verified live against the server
core-measurement pure Kotlin/JVM planned — measurement-schema.md types
core-probe Android lib planned — app-tier probes, ported from echolot-prober
core-shizuku Android lib planned — dual-path executor (UserService + newProcess fallback)
app Android app planned — Compose UI

core-protocol is deliberately Android-free so it builds and unit-tests on any JDK (no Android SDK) and can run integration tests against a live server.

core-protocol

Implements the control plane (SPKI-pinned enrollment/profile/sessions via HttpsURLConnection — Android-API-1 compatible, hostname verification off because trust is the pin), the HKDF-SHA256 session-key schedule, and the binary ELT1 UDP data plane (HMAC gate, ECHO + observation block, MTU probe) — byte-compatible with the Go server.

./gradlew :core-protocol:test              # unit tests (crypto vectors, wire round-trip)
scripts/test-fmr.sh                         # live end-to-end test against the deployed server

test-fmr.sh mints an enrollment token over SSH, enrolls via the public control plane, computes the SPKI pin from the served cert, and runs LiveServerTest — proving the client speaks the wire protocol to the real server (enroll → profile → session → echo+observation → MTU → observations). The live test self-skips when ECHOLOT_LIVE_* env vars are absent, so unit runs and CI stay green offline.