Use security key with Bluetooth, NFC, USB or your phone secure element
About this app
Passchain is a credential provider that allows you to use your USB/NFC security key or your phone secure element for passkeys/fido2/u2f authentication.
Bluetooth keys aren't supported yet.
This app doesn't need the Play Services.
Once installed, go to your system settings > Passwords, passkeys and accounts, then enable Passchain.
Licensed under Apache-2.0, by S1m.
What's New in v1.0.1
Imported from the F-Droid repository index.
- - Fix authentication on websites with `appid` extension (like Gitlab)
- - Fix registration on Chromium-based browsers
- - Authorize WebLibre
- - Add cs, de, fr, zh translations
- - Minor bugfixes
Version history
Jun 10, 2026 · 3.3 MB · Android API 34–36 · code 10
Imported from the F-Droid repository index.
- - Fix authentication on websites with `appid` extension (like Gitlab)
- - Fix registration on Chromium-based browsers
- - Authorize WebLibre
- - Add cs, de, fr, zh translations
- - Minor bugfixes
SHA-256 83405624fd0cf981644a10cc2c668b9cf43dee7e27cf828db498b060243cad12
Jun 5, 2026 · 3.3 MB · Android API 34–36 · code 9
Imported from the F-Droid repository index.
- - 1.0.0 !
- - The application is renamed *Passchain*
- - Add user interface to help setting up the settings
- - Bump microG library:
- - Add support for cross-device authentication: you can login on another device, or from another device!
- - Add entries to directly login with an on-device credential, or another method (NFC/USB)
SHA-256 6b8607c6f7dc3b5a323bd7fbb93b09046a54bc30eea66f3c8f5a02dbe08aaab4
Will it run on your device?
74%
- Targets newer Android builds, so legacy devices may be excluded.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be s1m.hwfido2provider is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.0.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Passchain first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Passchain, and a listing is removed when the evidence for it stops holding up.
Get Passchain
Every source we list for s1m.hwfido2provider is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
83405624fd0cf981644a10cc2c668b9cf43dee7e27cf828db498b060243cad12
Signing certificate
94bd36ba4648d38697cdfcf3385b6c0088ff3d551ce9fc16050ee080b9553ec5
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.