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Questions tagged [yubikey]

YubiKey is a security key device manufactured by Yubico that supports one-time passwords, public key encryption, and U2F protocol.

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can the persistent storage on tails-os be configured to use yubikey to unlock?

I use tails-os with persistent storage to keep sensitive data secure but relatively easy to access on an airgapped laptop. I might be pissing up a rope here, but I wonder if it might be possible to ...
naphelge's user avatar
1 vote
0 answers
189 views

No such device with Yubikey GnuPG

I have a yubikey 5 NFC with GPG keys configured that I use for encryption and signing. Usually, this works fine, but sometimes gpg will tell me that no card is connected; if I unplug and replug the ...
Lukor's user avatar
  • 151
0 votes
1 answer
98 views

Elexlinco NC004 card reader & FIDO2 problem with Yubikey 5C NFC

NFC Smart card reader & Yubikey works fine for OTP usage, example with challenge-response auth for KeppassXC. Problem with FIDO2, example for Google login. I've tried in Windows and all works well ...
ancoling67's user avatar
2 votes
1 answer
240 views

How to encrypt a file with Yubikey with openssl

I try to encrypt a file with my Yubkey and openssl on linux. My YubiKey is a idProduct 0x0407 Yubikey 4/5 OTP+U2F+CCID bcdDevice 5.24 First I extract my Public key from my ...
Janning's user avatar
  • 123
1 vote
1 answer
61 views

why won't pass allow entries to be added or edited?

I have been using pass (cli pw manager) for a couple of years now, and I just started using yubikeys. I have (2) YKs which I configured as duplicates of each other, transferring the same gpg subkeys (...
naphelge's user avatar
0 votes
1 answer
106 views

Why am I seeing output on `gpg --export-secret-key` when my secrets are on my smartcard?

I have a Yubikey with my GPG private keys on it, and public keys in my gpg keyring. I made sure that private keys are not present on my system by running gpg --export-secret-key -a <key id> ...
Weezy's user avatar
  • 679
0 votes
1 answer
307 views

Can a FIDO2 Security Token be removed after unlocking a LUKS volume at boot?

A FIDO2 security token should be used for decrypting all disks in a linux machine at boot. systemd allows this since version 248. Can the FIDO2 Security Token be removed after boot when using LUKS for ...
Simon Schürg's user avatar
8 votes
0 answers
8k views

How to setup passkey authentication in Linux?

I have setup the PAM module pam_u2f.so for FIDO2 as the primary authentication method on my LMDE 5 (based on Debian 11) machine. Is there a way to integrate passkey support with this PAM module or ...
Pavin Joseph's user avatar
0 votes
1 answer
221 views

Yubikey security key for file based container

Does anyone have a solution for using the Yubikey Security Key as a second factor for file-based crypto containers like VeraCrypt or something else? I know the Security Key doesn't allow PGP, but now ...
Yan Anisimov's user avatar
1 vote
2 answers
4k views

FIDO2 (YubiKey) to unlock LUKS from command line

Following the example of how to add a FIDO2 key from a YubiKey, but I can't figure out how to use the YubiKey to unlock it form the command line. The instructions talk about unlocking at boot--but ...
A. Que's user avatar
  • 673
2 votes
2 answers
1k views

Is there a tool that can perform direct RSA decryption with a Yubikey?

The use case I'm looking for is that I walk up to a headless server and "unlock" it using a hardware key, where scripts on the server recognize that I've plugged it in and automatically use ...
M Conrad's user avatar
  • 953
1 vote
0 answers
65 views

Yubikey PIV not working without OTP

I just started using a Yubikey to do SSH logins by following this guide. It works fine - but only as long as the Yubikey is able to do OTP. After a few accidental touches on the key spewing a random ...
azzid's user avatar
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1 vote
0 answers
387 views

GPG fails to decrypt file with Yubikey private key: No secret key

I'm trying to decrypt a file using GPG. The private key is stored on my Yubikey, but I get the following message from GPG: shell> gpg --output test-temp --decrypt git-token.gpg gpg: encrypted with ...
Victor's user avatar
  • 11
1 vote
0 answers
169 views

yubikey-agent not running on login

According to man configuration.nix, enabling services.yubikey-agent should start yubikey-agent on login: services.yubikey-agent.enable Whether to start yubikey-agent when you log in. Also sets ...
rampion's user avatar
  • 1,709
0 votes
1 answer
2k views

GPG is missing secret key that is expected to be on an OpenPGP card (YubiKey 5)

Hoping the answer https://unix.stackexchange.com/a/613772/320598 will help, I found out that it did not After asking this question, I found a very similar question at https://stackoverflow.com/q/...
U. Windl's user avatar
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