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YubiKey-Guide
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Merge pull request #190 from schmie/add-info-on-PIN-issues-and-debugging-them 

Add information on potential PIN issues and how to debug them
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drduh 2020-05-27 16:34:08 +00:00 committed by GitHub
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README.md
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@ -1246,7 +1246,7 @@ Use the [YubiKey Manager](https://developers.yubico.com/yubikey-manager) applica
## Change PIN ## Change PIN
The default PIN is `123456` and default Admin PIN (PUK) is `12345678`. CCID-mode PINs can be up to 127 ASCII characters. The default PIN is `123456` and default Admin PIN (PUK) is `12345678`. CCID-mode PINs can be up to 127 ASCII characters. They have to be at least 6 (PIN) or 8 (PUK) ASCII characters.
The Admin PIN is required for some card operations and to unblock a PIN that has been entered incorrectly more than three times. See the GnuPG documentation on [Managing PINs](https://www.gnupg.org/howtos/card-howto/en/ch03s02.html) for details. The Admin PIN is required for some card operations and to unblock a PIN that has been entered incorrectly more than three times. See the GnuPG documentation on [Managing PINs](https://www.gnupg.org/howtos/card-howto/en/ch03s02.html) for details.
@ -2357,9 +2357,11 @@ Admin PIN: 12345678
- Use `man gpg` to understand GPG options and command-line flags. - Use `man gpg` to understand GPG options and command-line flags.
- To get more information on potential errors, restart the `gpg-agent` process with debug output to the console with `pkill gpg-agent; gpg-agent --daemon --no-detach -v -v --debug-level advanced --homedir ~/.gnupg`.
- If you encounter problems connecting to YubiKey with GPG - try unplugging and re-inserting YubiKey, and restarting the `gpg-agent` process. - If you encounter problems connecting to YubiKey with GPG - try unplugging and re-inserting YubiKey, and restarting the `gpg-agent` process.
- If you receive the error, `gpg: decryption failed: secret key not available` - you likely need to install GnuPG version 2.x. - If you receive the error, `gpg: decryption failed: secret key not available` - you likely need to install GnuPG version 2.x. Another possibility is that there is a problem with the PIN, e.g. it is too short or blocked.
- If you receive the error, `Yubikey core error: no yubikey present` - make sure the YubiKey is inserted correctly. It should blink once when plugged in. - If you receive the error, `Yubikey core error: no yubikey present` - make sure the YubiKey is inserted correctly. It should blink once when plugged in.
@ -2415,3 +2417,4 @@ Admin PIN: 12345678
* https://www.hanselman.com/blog/HowToSetupSignedGitCommitsWithAYubiKeyNEOAndGPGAndKeybaseOnWindows.aspx * https://www.hanselman.com/blog/HowToSetupSignedGitCommitsWithAYubiKeyNEOAndGPGAndKeybaseOnWindows.aspx
* https://www.void.gr/kargig/blog/2013/12/02/creating-a-new-gpg-key-with-subkeys/ * https://www.void.gr/kargig/blog/2013/12/02/creating-a-new-gpg-key-with-subkeys/
* https://mlohr.com/gpg-agent-forwarding/ * https://mlohr.com/gpg-agent-forwarding/
* https://www.ingby.com/?p=293