Question

I am developing an Android application that utilizes RSYNC over SSH to sync up with a network folder. but im having problem with Key provided by puttygen ssh: string too long. I figured out that the ssh client installed in my device is a dropbear ssh client. For this to work, I have to convert PuttyGen PPK to a dropbear key.

Is there’s a way to convert PuttyGen PPK to Dropbear Key?

Can I convert it using my ubuntu machine? so that i will just copy the generated key to my android device?

Answer 1

Download the dropbear source to your machine, build it, and you should have access to dropbearconvert which can convert keys formatted for OpenSSH to the dropbear format.

Just doing a apt-get install dropbear will not install the dropbearconvert tool.

Edit:
Oh, and you can convert your PPK file to OpenSSH using puttygen.exe.

File menu -> Load your PPK file.
Conversions menu -> Export as OpenSSH file.