NAME

       ykinfo - Get basic information from a YubiKey

SYNOPSIS

       ykinfo [-s] [-m] [-nkey] [-H] [-v] [-t] [-p] [-1] [-2] [-q] [-a] [-c] [-V] [-h]

DESCRIPTION

       Get basic information from a YubiKey. Can get serial number, version and current touch
       level. Can get all parameters at once or one at a time. If -q is given only the relevant
       string from the YubiKey is written to screen.

OPTIONS

       -s
           get the serial number and output it.

       -m
           get the serial number and output it as modhex.

       -nkey
           read from the nth key found.

       -H
           get the serial number and output it as hex.

       -v
           get the version and output it.

       -t
           get the touch level and output it.

       -p
           get the programming sequence and output it.

       -1
           get the status of slot 1, 1 for programmed and 0 for empty.

       -2
           get the status of slot 2, 1 for programmed and 0 for empty.

       -a
           get all the information above.

       -c
           get YubiKey capability information.

       -q
           modifier, only show the relevant data from the YubiKey, no extra information.

       -V
           print tool version and exit

EXAMPLE

       Output information from a YubiKey:

           $ ykinfo -s -m -H -v -t -p
           serial: 1077254
           serial_hex: 107006
           serial_modhex: bcicch
           version: 2.2.3
           touch_level: 1793
           programming_sequence: 1
           $

BUGS

       Report ykinfo bugs in the issue tracker
       https://github.com/Yubico/yubikey-personalization/issues

SEE ALSO

       The ykpersonalize home page https://developers.yubico.com/yubikey-personalization/

       YubiKeys can be obtained from Yubico http://www.yubico.com/