Win下需要使用到 PuTTYgen.exe来生成公钥私钥，可以参考youtube的这篇文章： 为 SFTP 保管箱生成 Secure Shell (SSH) 密钥对
PuTTYgen.exe的下载地址： https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html
两篇关于FileZilla的SFTP用Private Key登录的方法的文章：
FileZilla的SFTP用private key的登录方法
============
https://support.hoststore.com/?/Knowledgebase/Article/View/86/0/how-to-connect-via-psftp-secure-ftp-using-a-private-key-file
how-to-connect-via-psftp-secure-ftp-using-a-private-key-file
Creating the key
- create an ssh key in cPanel if you haven't already.
- REMEMBER your passphrase
- view the private key (you will need to put in the passphrase to do this)
- select the entire key.
- open a new text file on your desktop, named username.txt
- paste the private key in to the text file
- change the name of the file to username.ppk
Configuring Putty
- download both putty and psftp here: http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
- fire up putty (just double click on the exe)
- under "saved sessions" put your username
- in hostname box put: username@ip || example: nick@1.2.3.4
- click the ssh radio button
- change the port if the ssh port is not 22
- on the menu on the left click the + next to SSH
- click the auth category
- click the browse button select the key you saved earlier (should be username.ppk)
- click on session on the left menu
- click the save button
- click cancel
using psftp:
- open psftp (just double click the exe)
- type: open username
- enter the passphrase for your private key
you are now connected via secure ftp, congratulations