ssh-keygen -e -f ~/.ssh/id_dsa.pub > ~/.ssh/id_dsa_ssh2.pub
ssh-keygen -i -f ~/.ssh/id_dsa_1024_a.pub > ~/.ssh/id_dsa_1024_a_openssh.pub
SSH A generic term referring to SSH protocols or software products. SSH-1 The SSH protocol, Version 1. This protocol went through several revisions, of which 1.3 and 1.5 are the best known, and we will write SSH-1.3 and SSH-1.5 should the distinction be necessary. SSH-2 The SSH protocol, Version 2, as defined by several draft standards documents of the IETF SECSH working group. SSH1 Tatu Ylönen's software implementing the SSH-1 protocol; the original SSH. Now distributed and maintained (minimally) by SSH Communications Security, Inc. SSH2 The "SSH Secure Shell" product from SSH Communications Security, Inc. This is a commercial SSH-2 protocol implementation, though it is licensed free of charge in some circumstances. ssh (all lowercase letters) A client program included in SSH1, SSH2, OpenSSH, F-Secure SSH, and other products, for running secure terminal sessions and remote commands. In SSH1 and SSH2, it is also named ssh1/ssh2, respectively. OpenSSH The product OpenSSH from the OpenBSD project, which implements both the SSH-1 and SSH-2 protocols. OpenSSH/1 OpenSSH, referring specifically to its behavior when using the SSH-1 protocol. OpenSSH/2 OpenSSH, referring specifically to its behavior when using the SSH-2 protocol.