CONVERT OpenSSH KEY TO SSH2 KEY
Run the OpenSSH version of ssh-keygen on your OpenSSH public key to convert it into the format needed by SSH2 on the remote machine.
This must be done on the system running OpenSSH.
#ssh-keygen -e -f ~/.ssh/id_dsa.pub > ~/.ssh/id_dsa_ssh2.pub
CONVERT SSH2 KEY TO OpenSSH KEY
Run the OpenSSH version of ssh-keygen on your ssh2 public key to convert it into the format needed by OpenSSH.
This needs to be done on the system running OpenSSH.
#ssh-keygen -i -f ~/.ssh/id_dsa_1024_a.pub > ~/.ssh/id_dsa_1024_a_openssh.pub