I switched from Putty to Poderosa for my Windows SSH client.

At that time, I needed to recreate the private key from the Putty format to the Poderosa format, so here are the steps. 　

■ Private Key File Names

• Putty： id_rsa_putty.ppk
• Poderosa： id_rsa_poderosa.sshcom

■ Steps

1. In the public/private key creation tool PuTTYgen, go to “File” → “Load private key” and load the Putty private key id_rsa_putty.ppk

Go to “Conversions” → “Export ssh.com key” to create the Poderosa private key (here I named the file id_rsa_poderosa.sshcom)

That’s all.

【References】

・Puttyで使ってた秘密鍵をPoderosaに移行する方法 - ABラボラトリ

・OpnSSHの鍵をPoderosa用に変換する: 端っこなひとの備忘録

That’s all from the Gemba.