Using public keys ssh passwordless

This is for Yun ssh to third party box.

First, generate your identity key on 'Yun'

At Yun:

mkdir -p ~/.ssh/
dropbearkey -t rsa -f ~/.ssh/id_rsa

Since dropbear stores its keys in different format, it needs to be converted for a standard SSH server:

dropbearkey -y -f ~/.ssh/id_rsa | grep "^ssh-rsa" >> authorized_keys

At Linux box(192.168.0.225):

mkdir -p /home/sonnyyu/.ssh
chown sonnyyu:sonnyyu -R /home/sonnyyu/

At Yun:

scp authorized_keys [email protected]:/home/sonnyyu/.ssh

At Linux box(192.168.0.225):

systemctl restart sshd.service #centos 7.0
/etc/init.d/sshd restart  #centos pre 7.0
/etc/init.d/ssh  restart  #debian/ubuntu

At Yun:

ssh [email protected]
ssh [email protected] -i ~/.ssh/id_rsa

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