FIDO2Applet
android-hardware-key-driver | FIDO2Applet | |
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1 | 2 | |
- | 60 | |
- | - | |
- | 8.8 | |
- | 15 days ago | |
Java | ||
- | MIT License |
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android-hardware-key-driver
FIDO2Applet
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Mathematician warns US spies may be weakening next-gen encryption
I believe the Solokey meets your definition. The hardware schematics are open, as is the software running on it.
The Precursor is also open hardware and software.
If you trust any smartcard at all running a Javacard-compatible operating system, there's also https://github.com/BryanJacobs/FIDO2Applet .
And of course if you're truly paranoid you can get a FPGA and implement a hardware security key on that. The overall security posture would likely be weaker, but you could be confident, hopefully, that nobody has put some kind of backdoor into the hardware you designed yourself to run atop a generic array of logic gates.
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How to Yubikey: A Configuration Cheatsheet
If you get a smartcard, you can install https://github.com/BryanJacobs/FIDO2Applet on it to make it into a FIDO2 authenticator. You can install a GPG and a PIV applet too.
A Yubikey is just a proprietary smartcard with a bunch of apps installed and some HID emulation (pretending to be a keyboard, which you likely do not want).
What are some alternatives?
yubikey-otp - Fuzzy search for TOTP (oath) secrets on your YubiKey and copy them to your clipboard.
yubikey-provisioning-scripts - A set of scripts to automate the provisioning of yubikey's openPGP applet.They set up your yubikey for git commit signing and SSH so you don't have to!
tillitis-key1 - Board designs, FPGA verilog, firmware for TKey, the flexible and open USB security key 🔑
u2f-javacard - A privacy-focused Java Card U2F Authenticator based on ledger-u2f-javacard
dage - Age Encryption implementation in Dart
yubikey-provisioning-scri
age-yubikey-pgp - Dage Yubikey plugin
openpgp - OpenPGP functionality for Solo