Copyright (c) 2000, 2002 Todd C. Miller <Todd.Miller@courtesan.com>
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.Dd July 14, 2002 .Dt LOGIN_SKEY 8 .Os .Sh NAME .Nm login_skey .Nd provide S/Key authentication type .Sh SYNOPSIS .Nm .Op Fl s Ar service .Ar user .Op Ar class .Sh DESCRIPTION The .Nm utility is called by .Xr login 1 , .Xr su 1 , .Xr ftpd 8 , and others to authenticate the .Ar user with S/Key authentication.
p The .Ar service argument specifies which protocol to use with the invoking program. The allowed protocols are .Em login , .Em challenge , and .Em response . The default protocol is .Em login .
p The .Ar user argument is the login name of the user to be authenticated.
p The .Ar class argument is not used.
p .Nm will look up .Ar user in the S/Key database and, depending on the desired protocol, will do one of three things: l -tag -width challenge t login Present .Ar user with an S/Key challenge, accept a response and report back to the invoking program whether or not the authentication was successful. t challenge Return the current S/Key challenge for .Ar user . t response Report back to the invoking program whether or not the specified response matches the current S/Key challenge for .Ar user . .El
p If .Ar user does not have an entry in the S/Key database, a fake challenge will be generated by the S/Key library. .Sh FILES l -tag -width /etc/skey t Pa /etc/skey directory containing user entries for S/Key .El .Sh SEE ALSO .Xr login 1 , .Xr skey 1 , .Xr skeyinfo 1 , .Xr skeyinit 1 , .Xr login.conf 5 , .Xr ftpd 8