作者：聂勇 欢迎转载，请保留作者信息并说明文章来源！
生成密钥 | Generating SSH Keys
1、Linux主机生成密钥
Generating public/private rsa key pair.
Enter file in which to save the key (/home/nieyong/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/nieyong/.ssh/id_rsa.
Your public key has been saved in /home/nieyong/.ssh/id_rsa.pub.
The key fingerprint is:
8f:91:be:f9:5b:29:a6:61:7e:dc:2e:d1:e2:5b:0d:98 nieyong@nieyong-redhat
在目录 /home/nieyong/.ssh/ 生成两个密钥文件：
- id_rsa.pub （公钥）
- id_rsa （私钥）
2、修改公钥名称
3、将私钥 id_rsa 复制到客户端。
4、使用puttygen.exe转换格式：
1）打开puttygen.exe –> Conversions –> Import Key
2）选择服务器复制下来的私钥文件id_rsa
3）点击按钮”Save private key” -> develop-redhat64bit-nieyong-private.ppk (保存转换格式后私钥)
设置Putty | Setting
1、设置Putty。
1）在左侧菜单栏选择：Connection –> Data，在Auto-login username后的输入框中输入自动登录的用户名。
2）Connection –> SSH –> Auth，点击Private key file for authentication下面输入框后面的”Browse…”按钮，选择私钥develop-redhat64bit-nieyong-private.ppk。
2、点击”Open”按钮登录后显示：
Using username “nieyong”.
Authenticating with public key “develop-redhat64bit-nieyong-private”
Last login: Fri Sep 14 10:15:25 2012 from 192.168.56.101
注：用puttygen生成的密钥，openssh不能识别，在登录时会提示”server refused our key”。