Nice! But I can't really use it until it works on Android too (with hardware keys). I'll definitely try it out though.
> the pass android app hardcoded too much PGP to be a useful base
The original one did not. It leveraged the OpenKeyChain external app which basically handles all the PGP stuff. So there was no PGP code in the app. Similar to how it's done on a PC with the gpg suite
But someone rewrote it with an internal library which also removed Yubikey support.
No way to prompt it for data, or compromise it remotely.
No other features, no OS userspace, no wifi, no adb, no nothing. Just a Linux kernel + a tiny single userspace static binary based on lvgl for UI and libsodium for encryption/storage. Normally powered off, boots in 2 seconds. :)
Xous (microkernel OS for Precursor) has an application called Vault that does FIDO2/U2F as well as password management and USB HID emulation.
https://www.crowdsupply.com/sutajio-kosagi/precursor/updates...
Much more on the dev board side and probably overkill for just this purpose but a really cool device.
Interestingly, Pinephone is in the almost good intersection of hackable and portable: :)
> Just a Linux kernel [...]
That's several orders of magnitude more lines of code than any FIDO authenticator implementation.
> Normally powered off, boots in 2 seconds. :)
Yubikeys boot even faster!
FIDO2 works only with websites that support it.
I mean, if you have the amount of access needed to compromise a USB connection, you have way more than enough access than needed to just yoink the authentication token or encryption key from browser storage.
Maybe I don't have enough money to buy a pinephone just for this purpose but even if I would have, I would personally look more into soldering (esp32?) or some single board chip (SOC?) with a touch screen sounds nice too.
Now I am not kidding, there was this dumb phone which I was using and its cost was like 12.5$ and it had the features of camera, mic , text , messaging, audio, file manager and so much more... Basically it just didn't had a browser or ability to add apps ofc since it wasn't android. But yeah I do believe that something niche could be developed for people like you at maybe 1/10th the price
I don't really want to replace it. It works fine. But the toolchain for other platforms is becoming difficult to manage. I use pass with PGP Yubikeys as backing for each encrypted password. But the developer of the Android version has stopped supporting it and the person who took it over has removed yubikey support because he doesn't use it himself and doesn't care about it.
Of course I need to access my passwords on Linux, Windows, Mac, Android. Only iOS is not possible because Apple doesn't allow raw APDU access to NFC tags so you can't do OpenPGP functions.
I also don't want to use a password manager with a single master password like bitwarden. I want each password to be encrypted individually with the public key from a number of hardware tags (multiple, that's also a hard requirement). This way not my whole password database is instantly leaked when my master password gets compromised. Even when my endpoint gets completely compromised, the only passwords they will have are the ones I decrypted on it since it was compromised. Yubikeys require a physical touch for every decryption so you also can't 'milk' them for credentials when they're inserted and unlocked. Also, any password manager I use must be self-hosted, I hate and don't trust the big tech companies.
I wonder if this could be a new backend. And have support on all platforms (though iOS I don't care about personally, but it would be a nice to have).