Adam Denenberg's Blog: Ubuntu error: key_from

Wednesday, November 30, 2011

Ubuntu error: key_from_blob

If you have seen this error before on Ubuntu (or any flavor of linux for that matter), after some annoying digging i finally resolved my issue. When adding a new DSA or RSA key to the authorized_keys file of your remote ssh server, you may see the following error

Nov 30 11:58:56 li321-228 sshd[7292]: error: key_from_blob: can't read dsa key
Nov 30 11:58:56 li321-228 sshd[7292]: error: key_read: key_from_blob AAAAB3NzaC1kc3MAAACBALZa7U63gJeJm5zHAaP9x1fQKfRdvkbHukV6T8S+392Vs74gQTLn\n failed

Not noticing the "\n" at first glance, i realized that when i pasted the multi-line DSA key into the authorized_keys file, it had newlines in it. Take out the newlines and you are set !

8 comments:

Olli Kaven said...: Thanks! Solved my issue :); June 8, 2012 at 10:42 AM
Unknown said...: Thank you!; April 18, 2013 at 11:48 AM
Anonymous said...: thanks a ton :):); August 15, 2013 at 5:21 AM
Atreus Karr said...: This is why I love the internet.; November 30, 2013 at 7:24 AM
Anonymous said...: That was it! Thanks!; April 19, 2014 at 3:54 AM
Nathan said...: Hey! You've achieved your goal. Thanks.; March 10, 2015 at 5:41 AM
Anonymous said...: Still valid, and problem resolving! Thanks; September 4, 2015 at 2:48 PM
Hemper said...: It helped me also! Thanks!; June 2, 2016 at 9:15 AM