NAME

       netkey-tool - administrative utility for Netkey E4 cards

SYNOPSIS

       netkey-tool [OPTIONS] [COMMAND]

DESCRIPTION

       The netkey-tool utility can be used from the command line to perform some smart card
       operations with NetKey E4 cards that cannot be done easily with other OpenSC-tools, such
       as changing local PINs, storing certificates into empty NetKey E4 cert-files or displaying
       the initial PUK-value.

OPTIONS

       --help, -h
           Displays a short help message.

       --pin pin, -p pin
           Specifies the current value of the global PIN.

       --puk pin, -u pin
           Specifies the current value of the global PUK.

       --pin0 pin, -0 pin
           Specifies the current value of the local PIN0 (aka local PIN).

       --pin1 pin, -1 pin
           Specifies the current value of the local PIN1 (aka local PUK).

       --reader arg, -r arg
           Number of the reader to use. By default, the first reader with a present card is used.
           If arg is an ATR, the reader with a matching card will be chosen.

       -v
           Causes netkey-tool to be more verbose. This options may be specified multiple times to
           increase verbosity.

PIN FORMAT

       With the -p, -u, -0 or the -1 one of the cards pins may be specified. You may use plain
       ascii-strings (i.e. 123456) or a hex-string (i.e. 31:32:33:34:35:36). A hex-string must
       consist of exactly n 2-digit hexnumbers separated by n-1 colons. Otherwise it will be
       interpreted as an ascii string. For example :12:34: and 1:2:3:4 are both pins of length 7,
       while 12:34 and 01:02:03:04 are pins of length 2 and 4.

COMMANDS

       When used without any options or commands, netkey-tool will display information about the
       smart cards pins and certificates. This will not change your card in any aspect (assumed
       there are no bugs in netkey-tool). In particular the tries-left counters of the pins are
       investigated without doing actual pin-verifications.

       If you specify the global PIN via the --pin option, netkey-tool will also display the
       initial value of the cards global PUK. If your global PUK was changed netkey-tool will
       still display its initial value. There's no way to recover a lost global PUK once it was
       changed. There's also no way to display the initial value of your global PUK without
       knowing the current value of your global PIN.

       For most of the commands that netkey-tool can execute, you have to specify one pin. One
       notable exception is the nullpin command, but this command can only be executed once in
       the lifetime of a NetKey E4 card.

       cert number filename
           This command will read one of your cards certificates (as specified by number) and
           save this certificate into file filename in PEM-format. Certificates on a NetKey E4
           card are readable without a pin, so you don't have to specify one.

       cert filename number
           This command will read the first PEM-encoded certificate from file filename and store
           this into your smart cards certificate file number. Some of your smart cards
           certificate files might be readonly, so this will not work with all values of number.
           If a certificate file is writable you must specify a pin in order to change it. If you
           try to use this command without specifying a pin, netkey-tool will tell you which one
           is needed.

       change {pin | puk | pin0 | pin1} new-pin
           This changes the value of the specified pin to the given new value. You must specify
           either the current value of the pin or another pin to be able to do this and if you
           don't specify a correct one, netkey-tool will tell you which one is needed.

       nullpin initial-pin
           This command can be executed only if the global PIN of your card is in nullpin-state.
           There's no way to return back to nullpin-state once you have changed your global PIN.
           You don't need a pin to execute the nullpin-command. After a successful
           nullpin-command netkey-tool will display your cards initial PUK-value.

       unblock {pin | pin0 | pin1}
           This unblocks the specified pin. You must specify another pin to be able to do this
           and if you don't specify a correct one, netkey-tool will tell you which one is needed.

SEE ALSO

       opensc-explorer(1)

AUTHORS

       netkey-tool was written by Peter Koch <pk_opensc@web.de>.