YubiKey challenge-response USB and NFC driver
About this app
ykDroid is a USB and NFC driver for Android that exposes the challenge-response feature of YubiKeys for use by other Android apps. Both USB and NFC (YubiKey NEO required for NFC) are supported on compatible devices.
Apps supporting it include e.g. Keepass2Android and ykpass.
Licensed under GPL-3.0-only, by Yussuf Khalil.
What's New in v1.3
Imported from the F-Droid repository index.
Version history
Jun 8, 2023 · 0 MB · Android API 21–33 · code 7
Imported from the F-Droid repository index.
SHA-256 fe04c7a80a5a618723725f5f002ce26cd39e50f6df258195800198ff571f241f
Oct 13, 2020 · 0 MB · Android API 21–29 · code 6
Imported from the F-Droid repository index.
SHA-256 212166f620f0b1c52862fca6f733bfef16c59d8d29888a600a18595c232bcf96
Sep 4, 2020 · 0 MB · Android API 21–29 · code 5
Imported from the F-Droid repository index.
SHA-256 09d833c5fe266702de83436152b506569067dea96a540166380e9f49956ba5d1
Will it run on your device?
73%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
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 net.pp3345.ykdroid 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, 1.2.1 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall ykDroid 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 ykDroid, and a listing is removed when the evidence for it stops holding up.
Get ykDroid
Every source we list for net.pp3345.ykdroid 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
fe04c7a80a5a618723725f5f002ce26cd39e50f6df258195800198ff571f241f
Signing certificate
2016da890ff933c87507bdba64c62910199bfc56510e5db280a271d2ffcbf83d
Permissions Required
What each permission lets ykDroid 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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