Date

I've used this thrice in three days, so I'm just keeping a copy for myself.

Sourced (i.e. blatant copy-paste) from: http://arbib.it/tag/shortest-passwordless-ssh-tutorial/

That in turn got it from http://blogs.translucentcode.org/mick/archives/000230.html

Begin:

local$ ssh-keygen -t dsa
local$ scp ~/.ssh/id_dsa.pub remote:~/
local$ ssh username@remote
remote$ cat ~/id_dsa.pub >> ~/.ssh/authorized_keys
remote$ chmod 644 ~/.ssh/authorized_keys
remote$ exit
local$ ssh username@remote

Now instead of the normal password you should be asked for the password you entered for your dsa key. This isn't passwordless yet but shows that ssh is using the key.

Note: Leave Key password blank to have passwordless authentication

Fixes for possible problems:

chmod 0600
authorized_keys
ln -s authorized_keys2 authorized_keys (or viceversa)

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