skeylookup
int skeylookup(struct skey *, char *);
i = skeylookup(&skey, username);
i = skeylookup(&skey, username);
haskey = (skeylookup(&skey, user) == 0);
switch (skeylookup(&key, name)) {
error = skeylookup(&key, name);
rval = skeylookup(&skey, pp->pw_name);