用puttygen工具把私鑰id_rsa轉換成公鑰id_rsa.ppk

1 前言

有時候需要ppk格式的公鑰，可以用putty來處理

2 步驟

1. 產生密鑰

可以參考Gitlab的SSH配置（linux和windows雙版本）

$ ssh-keygen -t rsa -C [e-mail] -b 4096
Generating public/private rsa key pair.
Enter file in which to save the key (/c/Users/Administrator/.ssh/id_rsa):
Created directory '/c/Users/Administrator/.ssh'.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /c/Users/Administrator/.ssh/id_rsa.
Your public key has been saved in /c/Users/Administrator/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:nd6QS7KWq1234565vAzG+2VzshgL3KN3Ti7iF8mByQ [e-mail]
The key's randomart image is:
+---[RSA 4096]----+
|                 |
|                 |
|         E .  ..o|
|         .oo   ==|
|        N *+   =*|
|         S.+O *o*|
|       .=.+=.%.=.|
|      .o.o+.E.o  |
|      .o..oo.o.  |
+----[SHA256]-----+

2. 使用puttygen轉換

保存為id_rsa.ppk，完成。然后拷貝其內容到網上設置SSH公鑰中黏貼。