ssh - using puttygen generated public keys in unix environment?

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How to convert .ppk key to OpenSSH key *under Linux*?

(unix, here: ubuntu 10.4)

I know how to create ssh key pairs in unix (ssh-keygen) and how to do it in windows (puttygen). the missing part in my case would be how to use a keypair, generated in windows (puttygen), in a unix shell.

where do I need to put the public key, in this particular case, to use it as an ssh-key in git.

Answer

Ok, I think I didn't make myself quite clear but found the solution:

1. start puttygen


2. load private key


3. Menu Conversions|Export OpenSSH key


4. Save somewhere, Open, Copy content to clipboard, paste on linux into file: $HOME/.ssh/id_dsa


5. (optionally) copy content of text area "Public Key for pasting into OpenSSH authorized_keys file", paste on linux into file: $HOME/.ssh/id_dsa.pub

you can now use this SSH key from a shell to login into remote systems.

side note: to seamlessly use git from windows putty in a linux shell to connect to git set these options in putty session:

(and you must put the public key in ~/.ssh/authorized_keys, sure..)