SysAdmin
c9e67d8b47
Run #4273 confirmed two things: 1. The reproducibility gate works end-to-end. Both builds produced ISOs (1077194752 vs 1077202944 bytes — 8 KiB delta, exactly one squashfs block worth of compressed-payload drift) and the compare step caught it. 2. diffoscope, run on the whole 1 GB ISO inside the silvermetal-builder container, gets OOM-killed before producing any output: diagnose-divergence.sh: line 44: 13 Killed diffoscope --max-report-size 100000000 --html ... --text ... A.iso B.iso The host has 19 GiB free, but diffoscope's full recursion through ISO -> squashfs -> ~thousands of inner files needs more memory than that for a 1 GB image. Setting --max-report-size only caps the output, not the working-set. Rewrite diagnose-divergence.sh to do staged, cheap-to-expensive analysis: 1. sha256 + sizes (always) 2. xorriso TOC of both ISOs (every node: mode/size/mtime/path) -> diff 3. Pull just live/filesystem.squashfs out of each ISO, sha256 it + `unsquashfs -ll` it, diff the listings — this is where the per-file-size signal lives. 4. Targeted diffoscope on the squashfs payload only, with --max-container-depth 2 + --max-text-report-size 5MB + --no-html + a 10-minute timeout. Bounded enough to finish without the OOM. Drops `set -e` — every step `|| true`s itself so we get partial output even when one stage fails. Workflow tail-into-log step now prints the new staged outputs: * toc-diff.txt — what changed at the ISO level * sqfs-ls-diff.txt — which inner files have different sizes/mtimes * sqfs-diff.txt — diffoscope on the squashfs only * squashfs-sha256.txt * iso-header-cmp.txt — first-8KB cmp -l for header-level drift * sizes.txt / sha256.txt / checklist.md as before Should land us a focused list of "these N files inside the squashfs have different bytes" — that's what we need to find what's leaking non-determinism into the build. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
SilverMetal
Privacy-hardened devices for users who want their privacy back — on whatever platform they have.
SilverMetal is SilverLABS' cross-platform privacy-hardening program. We don't believe in "one true OS" — we meet users on the platform they actually use, and give them the strongest hardening that platform physically allows. Honestly labelled, no marketing fluff.
Two product lines
The SilverMetal program ships two distinct product lines, named to make their scope obvious to buyers:
🔒 SilverMetal OS
We ship the operating system or ROM. Full kernel-level control, our verified-boot key, our update channel. Strongest possible hardening.
- SilverMetal OS — Linux (Debian/Kicksecure-based ISO) — Tier A
- SilverMetal OS — Pixel (GrapheneOS-fork ROM) — Tier B
- SilverMetal OS — Samsung (LineageOS-fork ROM, unlocked-bootloader models) — Tier C
- SilverMetal OS — Motorola (DivestOS/LineageOS-fork ROM) — Tier C
🛡️ SilverMetal Enhanced
We harden the OS your device already runs. Configuration profiles, hardening installers, the SilverLABS Application Stack. For users who can't or won't replace their OS.
- SilverMetal Enhanced — Windows (LTSC IoT installer + hardening + Stack) — Tier C
- SilverMetal Enhanced — macOS (signed config profile + setup script + Stack) — Tier C-D
- SilverMetal Enhanced — iOS (MDM profile + Stack) — Tier D
- SilverMetal Enhanced — Android (generic profile + Stack on existing Android) — Tier D
Tiers explained in docs/platform-matrix.md.
What every SilverMetal device gets
Both lines ship the SilverLABS Application Stack — a suite of cross-platform privacy apps that replace the cloud services your device normally talks to (Google, Apple, Microsoft):
| Component | Status | Purpose |
|---|---|---|
| SilverBrowser | v1 (Linux MVP) | De-Googled, telemetry-free, fingerprint-resistant browser |
| SilverVPN | Existing — see SilverLABS/SilverVPN |
Always-on, no-logs VPN with our own infrastructure |
| SilverSync | v1 (Linux MVP) | Private replacement for iCloud / Google Drive / OneDrive |
| SilverChat | Existing — SilverVPN.Client.Chat, Signal Protocol over VPN transport. Promoted from v1.1 to v1 |
E2EE messenger |
| SilverDuress | v1.1 | Duress password / panic-wipe / anti-coercion |
| SilverKeys | v1.1 | Zero-knowledge password + 2FA manager |
Two ways to get SilverMetal
Every flavour — OS or Enhanced — supports both buyer modes:
"I'm choosing a new device"
Buy a preflashed SilverMetal SKU. We've done all the work; it arrives ready.
"I already own a device and want to harden it"
Download the free SilverLABS Stack + the SilverMetal OS or Enhanced package for your platform. Apply it yourself. Same software, same hardening, no hardware lock-in.
Status
| Component | Status |
|---|---|
| Documentation + roadmap | Initial scaffold complete |
| SilverMetal OS — Linux v1 | Phase 1 — moving to milestone 1.1 (build pipeline) |
| SilverLABS Stack v1 (Browser + Sync) | Planning |
| SilverVPN | Existing product, integration into v1 ISO planned |
| SilverChat | Existing product (SilverVPN.Client.Chat); promoted to v1, integration into v1 ISO planned |
| Other OS/Enhanced flavours | Planning, post-Linux v1 |
See docs/roadmap.md for the milestone-driven plan.
Related repositories
| Repo | Relationship |
|---|---|
SilverLABS/SilverVPN |
The VPN component of the SilverLABS Stack — already in production. SilverMetal integrates it; does not re-implement it |
SilverLABS/SilverApple |
Deprecated. Earlier iOS-hardening prototype, superseded by SilverMetal Enhanced — iOS |
SilverLABS/SilverDROID |
Unrelated (SilverSHELL AppStore Android client). Name is similar but scope is different |
Documentation
docs/threat-model.md— who we defend against, who we don'tdocs/design-principles.md— privacy-by-default, verifiability, honestydocs/platform-matrix.md— full per-platform pros/consdocs/roadmap.md— milestones, ship order, scopedocs/trust-model.md— signing keys, reproducible builds, governance
License
Components carry their own licenses (most are GPL/MIT/Apache-derived from upstream forks). Original SilverLABS-authored glue code is AGPL-3.0-or-later. See LICENSE.
SilverLABS
SilverMetal is built by SilverLABS — privacy-first infrastructure and applications.