为ssh加个证书

Using username "root".Authenticating with public key "imported-openssh-key"Passphrase for key "imported-openssh-key":Last login: Mon Nov 9 09:54:25 2009 from 192.168.3.135OpenBSD 4.6 (GENERIC) #58: Thu Jul 9 21:24:42 MDT 2009Welcome to OpenBSD: The proactively secure Unix-like operating system.Please use the sendbug(1) utility to report bugs in the system.Before reporting a bug, please try to reproduce it with the latestversion of the code. With bug reports, please try to ensure thatenough information to reproduce the problem is enclosed, and if aknown fix for it exists, include that as well.10:11AM up 42 mins, 3 users, load averages: 0.12, 0.09, 0.08USER TTY FROM LOGIN@ IDLE WHATroot C0 - 9:29AM 20 -bashroot p0 192.168.3.135 9:50AM 0 -bashroot p1 192.168.3.135 10:11AM 0 w   November 2009Su Mo Tu We Th Fr Sa 1 2 3 4 5 6 7 8 9 10 11 12 13 1415 16 17 18 19 20 2122 23 24 25 26 27 2829 30[root@liuqi ~]#

[root@liuqi ~]#ssh-keygen -b 1024 -t dsaGenerating public/private dsa key pair.Enter file in which to save the key (/root/.ssh/id_dsa):Enter passphrase (empty for no passphrase):Enter same passphrase again:Your identification has been saved in /root/.ssh/id_dsa.Your public key has been saved in /root/.ssh/id_dsa.pub.The key fingerprint is:ba:71:52:87:11:cd:74:8a:bc:91:ba:a3:51:af:95:77 root@liuqi.cutbagThe key

cat id_rsa.pub > authorized_keys

RSAAuthentication yesPubkeyAuthentication yesAuthorizedKeysFile .ssh/authorized_keys