ssh key with different ssh versions.

[KiddA]

Hi people ... I'm trying to exchange ssh key to avoid password request.

source server is an hpux 11.00, ssh version is
ssh: SSH Secure Shell 3.2.3 on hppa1.1-hp-hpux11.00

target server is an aix 5.2, ssh version is
OpenSSH_4.7p1, OpenSSL 0.9.8f 11 Oct 2007
===
in source server i did generate ssh key doing "ssh-keygen -t rsa" and its stored in "Public key saved to /usr/app/autosys/.ssh2/id_rsa_2048_c.pub"
"cat ~/.ssh2/identification
IdKey id_rsa_2048_b"


What I need to know is how do i append that key to the target server in "authorized_key" file.

Thx all for the time and help!!!

[Dennis Handly]

Just cat it to the end of your file:
cat identification >> ~/.ssh2/authorized_keys

[Matti_Kurkela · Accepted solution]

Your source server is running a commercial SSH product from ssh.com. It uses a public key storage format that is different from OpenSSH key format, but the key itself is compatible.

Copy the id_rsa_2048_c.pub file to the target server, then run:
ssh-keygen -i -f id_rsa_2048_c.pub >>~/.ssh/authorized_keys

This (-i is for import) will convert the commercial SSH public key to the proper format for OpenSSH.

The OpenSSH authorized_keys file requires that the keys are in "one key per line" format, while the commercial SSH stores the public key in a multi-line format.

The OpenSSH ssh-keygen tool has both import and export options, so it can convert the keys in both directions. The ssh-keygen tool of the commercial SSH (version 3.2.*) can only import OpenSSH keys to ssh.com format.

MK

[KiddA]

Thanks 4 the help guys, points assigned.