Puttygen openssh convert

When working with people who don’t use a Unix-based operating system, you’ll often come across the SSH2 Public Key format. PuTTY is probably the most famous software using this format and nearly everyone on Windows uses it. To give them access to a system, SFTP server, Git repository or similar you often need to convert an SSH2 public key into the OpenSSH format. This article describes how to do exactly that.

The Problem

You receive a public key looking like this:

—- BEGIN SSH2 PUBLIC KEY —-