"Now if you already have a .ppk file from your PC that you want to
convert to use on your Mac you need to visit the Putty Website www.chiark.greenend.org.uk/~sgtatham/putty/download.html and
download puttygen.exe (on your PC) now open it, and using the File
menu, load your .ppk that you already use, and type in your pass phrase.
Now go to the Conversions menu and export the key as an OpenSSH key –
hey presto – you now have a key file that will work on your Mac! Such a
simple solution, yet that took me so long to figure out …"
Ideas
You can convert your ppk file to OpenSSH format using puttygen. According to the article at http://leadingedgescripts.co.uk/server-administration/how-to-convert-your-putty-ppk-private-key-to-a-normal-ssh-key-you-can-use-on-an-apple-mac/ you have to do this:
"Now if you already have a .ppk file from your PC that you want to convert to use on your Mac you need to visit the Putty Website www.chiark.greenend.org.uk/~sgtatham/putty/download.html and download puttygen.exe (on your PC) now open it, and using the File menu, load your .ppk that you already use, and type in your pass phrase.
Now go to the Conversions menu and export the key as an OpenSSH key – hey presto – you now have a key file that will work on your Mac! Such a simple solution, yet that took me so long to figure out …"
I hope this helps.
Alexander
Sorry, can you please clarify what you mean by that?
If you are talking about the comments in this feedback forum, you can just copy it in Safari and paste it in Textastic, can't you?