donkey - alternative for S/KEY's "key" command.

       This program is developed by Kazuhiko Yamamoto <kazu@is.aist-nara.ac.jp>.  This manual page  was  written
       by  Fumitoshi  UKAI  <ukai@debian.or.jp>,  based  on  the  documentation  of this program, for the Debian
       GNU/Linux system (but may be used by others).

                                                 April 17, 2016                                        DONKEY(1)

       Things to do:

       Support other one time passwords such as OTP.

       Support other secure hash functions.

       This  manual  page  documents briefly the donkey, and key commands.  This manual page was written for the
       Debian GNU/Linux distribution because the original program does not have a manual page.  Instead, it  has
       documentation in /usr/share/doc/donkey

       donkey is an alternative for S/KEY's "key" command. The new feature that the original key doesn't have is
       print an entry for skeykeys as follows;

              kazu 0099 al02004          115d83956f1089b6  Apr 26,1995 22:13:27

       This means that donkey is also an alternative for "keyinit". Since the entry is printed to stdout (not to
       /etc/skeykeys),  you  can  easily  sent  it  to  a  remote  operator  by  e-mail (with a PGP signature or
       something).  So it is possible to initiate S/KEY without loginging onto the console of the host.

(1)CalculateanOne-Time-Password.
       Execute Donkey with a sequence number and a seed, then input your passphrase.

              % donkey 80 is12345
              Enter passphrase : xxxxxxxxxxxxxxxxxxxxxxx
              SOFT O SAW SWAB CON RODE

       You can choose the hash function.

              % donkey 80 is12345
              Enter passphrase : xxxxxxxxxxxxxxxxxxxxxxx
              SOFT O SAW SWAB CON RODE

              %donkey -f md5 80 is12345
              Enter passphrase : xxxxxxxxxxxxxxxxxxxxxxx
              LACK WIN ROSE ANNA STUN REEK

       The default hash function is MD4 due to historical reasons.

   (2)CalculateseveralOne-Time-Passwordsatonce.
       Use the -n option.

              % donkey -n 10 80 is12345
              Enter passphrase : xxxxxxxxxxxxxxxxxxxxxxx
              71: WORE HELL CUB FAR DORA MALE
              72: SAIL DAN DONE BEER DAYS MOS
              73: PAN TONE THAT TOUT BURY EST
              74: KEN ROAM HEAT NAN MEAN HEN
              75: MINI MARS HASH BOTH SITU SING
              76: TOW SHIN FLUE ARID AHOY NE
              77: SLID LEEK NO TREE STOW BEY
              78: RUDY WINE GIFT FUSS AGEE SUE
              79: GELD THIN MAID THIN BUD TURF
              80: SOFT O SAW SWAB CON RODE

       Note that though "Enter passphrase" is printed out to the standard error stream,  the  One-Time-Passwords
       are written to the standard output stream, so you can redirect the output safely.

   (3)Printanskeykeysentry.
       Use  the -i option without arguments. Then, enter the login name, the sequence number and the seed. Input
       your passphrase twice to get the entry.

              % donkey -i
              Enter login name [default kazu]:
              Enter sequence 1 to 999 [default 99]:
              Enter new seed [default ur18122]:
              Please choose passphrase between 8 and 256 characters.
              Enter passphrase : xxxxxxxxxxxxxxxxxxxxxxxxxxx
              Re-enter passphrase : xxxxxxxxxxxxxxxxxxxxxxxxxxx
              kazu 0099 ur18122          fc5b023e684968ff  Oct 02,1995 16:15:30
              WINK SEAM GRAB ROAD HELL FEST

       donkey - alternative for S/KEY's "key" command.

       A summary of options is included below.

       -nnum specify the number of keys to be calculated.

       -ffunc choose a hash function - one of MD4 or MD5

donkey[options]sequenceseeddonkey-ikey[option]sequenceseedkey-i