Program the static password and/or OpenPGP keys to your YubiKey or Nitrokey 3
About this app
Uncomplicatedly simple: if you manage your long, complicated and secure passwords in a password manager app (like KeePassDroid) on your Android device, you can now "type" them easily on any other device, be it a phone, tablet, or PC running Windows, Linux, or macOS.
sub rosa allows you to program the static password of your YubiKey which then can be used to "type" the password with the touch of a finger.
Once you are done "typing" your long, complicated and secure password, remember to wipe clean your YubiKey... Is not much security if anyone can "type" your password by touching the YubiKey!
The various keyboards accept the following characters:
• US: space, \n, \t and abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!"#$%&'`()*+-=,./:;<>?@[\]^_{}|~ • UK: space, \n, \t and abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@£$%&'`()*+-=,./:;<>?"[#]^_{}~¬ • DE: space, \n, \t and abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!"#$%&'()*+-=,./:;<>?^_`§´ÄÖÜßäöü • FR: space, \n, \t and abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!"$%&'()*+-=,./:;IT: space, \n, \t and abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!"#$%&'()*+,-./:;?@\^_`|£§°çèéàìòù • MODHEX: bcdefghijklnrtuvBCDEFGHIJKLNRTUV
Since version 2.0.0, sub rosa has added support for OpenPGP. You can now provision an OpenPGP key onto your YubiKey or Nitrokey 3.
In keeping with the app’s motto, “Uncomplicatedly simple,” you can encrypt, decrypt, sign, and authenticate with your security key, then wipe it clean and write another OpenPGP key to change your digital identity.
SSH authentication is simpler now—you no longer need to reuse the same SSH key or buy multiple security keys
sub rosa is an Android app, built on top of YubiKit library provided by Yubico,
Version 2.0.0 - Adding support for Nitrokey 3 - Adding OpenPGP support for Yubikey and Nitrokey
Licensed under Apache-2.0, by naiveHA.
What's New in v2.1.0
Imported from the F-Droid repository index.
Version history
Jul 14, 2026 · 42.7 MB · Android API 31–37 · code 9
Imported from the F-Droid repository index.
SHA-256 341950e8db7b250b965f62d37d4c432077d9054edf00cc081a1a6b2b5186745f
Jul 6, 2026 · 42.7 MB · Android API 31–37 · code 8
Imported from the F-Droid repository index.
SHA-256 4d8b69dd1bde424857466a4a817385cd83404ec53df5ede76123c276117672c1
Apr 19, 2026 · 4 MB · Android API 31–36 · code 7
Imported from the F-Droid repository index.
SHA-256 01f3909d376a5cf433004cd3eed7452732f5dda07895ce276ee3cd43d2e6db3f
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 acab.naiveha.subrosa 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, 2.0.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall sub rosa by naiveHA 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 sub rosa by naiveHA, and a listing is removed when the evidence for it stops holding up.
Get sub rosa by naiveHA
Every source we list for acab.naiveha.subrosa 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
341950e8db7b250b965f62d37d4c432077d9054edf00cc081a1a6b2b5186745f
Signing certificate
512ccef51ab8ba405c22f193ea1205629f7888be8be069b67bea768bc0e536ac
Permissions Required
What each permission lets sub rosa by naiveHA do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
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.
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