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Re: id_rsa.pub



David Hláèik wrote, On 09/25/2008 07:35 AM:
Hi guys, i have reinstalled my laptop with Fedora 9.

I have my RSA private key in .ssh/id_rsa . How to generate public key
which i can use from private RSA key? (to have .ssh/id_rsa.pub).

Thanks!

ssh-keygen -t rsa -b512 -C 'a test key' -N 'junkme'
mv id_rsa.pub id_rsa.pub.orig


ssh-keygen -f id_rsa -e >SECSHpkff
ssh-keygen -i -f SECSHpkff > SECSHpkff.ossh

cat id_rsa.pub.orig ;echo " ";cat SECSHpkff.ossh
ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAEEA2B/62aUjcZW4kZJRnL/mS0pNIuIt6BCVc6y2V24trV6H90qqud1Jy3mOT4ZuRru53LYtURENZPVXBPqzqYJ7QQ== a test key

ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAEEA2B/62aUjcZW4kZJRnL/mS0pNIuIt6BCVc6y2V24trV6H90qqud1Jy3mOT4ZuRru53LYtURENZPVXBPqzqYJ7QQ==


Visual diff indicates a delta in the comment portion, but otherwise the same.
...
So
ssh-keygen -f id_rsa -e >SECSHpkff
ssh-keygen -i -f SECSHpkff > id_rsa.pub
should get your public side back. There is probably an easier way, but this worked.

--
Todd Denniston
Crane Division, Naval Surface Warfare Center (NSWC Crane)
Harnessing the Power of Technology for the Warfighter


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