|SKEY(1)||General Commands Manual||SKEY(1)|
S/Keyis a procedure for using one-time passwords to authenticate access to computer systems. It uses 64 bits of information transformed by the MD5, RIPEMD-160, or SHA1 algorithms. The user supplies the 64 bits in the form of 6 English words that are generated by a secure computer. This implementation of
S/Keyis RFC 2289 compliant.
skey the system needs to be
initialized using skeyinit(1); this
will establish a secret passphrase. After that, one-time passwords can be
skey, which will prompt for the
secret passphrase. After a one-time password has been used to log in, it can
no longer be used.
skey is invoked as
skey will use
method as the hash function where
method is currently one of md5, rmd160, or sha1.
If you misspell your secret passphrase while running
skey, you will get a list of one-time passwords that
will not work, and no indication of the problem.
Password sequence numbers count backwards. You can enter the
passwords using small letters, even though
prints them capitalized.
The options are as follows:
$ skey 99 th91334 Enter secret passphrase: <your secret passphrase is entered here> OMEN US HORN OMIT BACK AHOY $
|October 9, 2015||OpenBSD-current|