客户端：
#ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/Users/hisway/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /Users/hisway/.ssh/id_rsa.
Your public key has been saved in /Users/hisway/.ssh/id_rsa.pub.
The key fingerprint is:
0d:24:c6:8d:f0:d9:b2:01:08:67:89:8a:5f:20:8e:b7 hisway@hisway.lan
The key's randomart image is:
+--[ RSA 2048]----+
|.ooooooo. |
|oo+ +o=. |
|=. . = o |
|+.. . + o |
| o o . S . |
| E |
| |
| |
| |
+-----------------+
#scp /Users/hisway/.ssh/id_rsa.pub root@162.243.*.*:/home/root/id_rsa.pub
服务端：
#cat id_rsa.pub >>/root/.ssh/authorized_keys
# vi /etc/ssh/sshd_config
RSAAuthentication yes
#RSA认证
PubkeyAuthentication yes
#开启公钥验证
AuthorizedKeysFile .ssh/authorized_keys
#验证文件路径
PasswordAuthentication no
#禁止密码认证
PermitEmptyPasswords no
#禁止空密码
UsePAM no
#禁用PAM
最后保存，重启
#
service sshd restart