创建 ssh 1 兼容的公钥私钥对

localshell$ cd $HOME
localshell$ ssh-keygen -t rsa1
Generating public/private rsa1 key pair.
Enter file in which to save the key (/home/localshell/.ssh/identity
):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /localshell/.ssh/identity.
Your public key has been saved in /home/localshell/.ssh/identity.pub.

创建 ssh 2 兼容的公钥私钥对

分别演示用两种算法，生成两套公钥－私钥对。

localshell$ cd $HOME
localshell$ ssh-keygen -t dsa
Generating public/private dsa key pair.
Enter file in which to save the key (/home/localshell/.ssh/id_dsa
):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /localshell/.ssh/id_dsa.
Your public key has been saved in /home/localshell/.ssh/id_dsa.pub.
localshell$ ssh-keygen -t rsa
... ...