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Re: howto remote unlock encrypted root fs



> On Fri, 15 Jun 2012, Bj?rn Wetterbom wrote:
> 
> > Have you executed "update-initramfs -u" after adding the key to
> > authorized_keys?
> >
> 
> Yes and to be sure I opened the new ramdisk to make sure.
> 
> 
> >
> > On Fri, Jun 15, 2012 at 12:33 PM, kqt4at5v@gmail.com <kqt4at5v@gmail.com>wrote:
> >
> >> I have a Gurplug running Wheezy from a usb harddrive with an encrypted
> >> root fs. No problems there. I am trying to get remote unlocking set up as
> >> described in /usr/share/doc/cryptsetup/**README.remote.gz. Everything
> >> seems to be working as described except dropbear will not accept publickey
> >> authentication and ask for a password. The authorized_keys file contains
> >> public keys that I know work. I read a bug report that plymouth was a
> >> culpret causing this problem but I have no plymouth nor can I find it.
> >> Maybe that is the problem. Here is the attempted login transcript
> >>
> >> ]$ ssh -v  root@192.168.1.113
> >> OpenSSH_5.3p1 Debian-3ubuntu7, OpenSSL 0.9.8k 25 Mar 2009
> >> debug1: Reading configuration data /home/rray/.ssh/config
> >> debug1: Reading configuration data /etc/ssh/ssh_config
> >> debug1: Applying options for *
> >> debug1: Connecting to 192.168.1.113 [192.168.1.113] port 22.
> >> debug1: Connection established.
> >> debug1: identity file /home/rray/.ssh/identity type -1
> >> debug1: identity file /home/rray/.ssh/id_rsa type 1
> >> debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-**2048
> >> debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048
> >> debug1: identity file /home/rray/.ssh/id_dsa type -1
> >> debug1: Remote protocol version 2.0, remote software version
> >> dropbear_2012.55
> >> debug1: no match: dropbear_2012.55
> >> debug1: Enabling compatibility mode for protocol 2.0
> >> debug1: Local version string SSH-2.0-OpenSSH_5.3p1 Debian-3ubuntu7
> >> debug1: SSH2_MSG_KEXINIT sent
> >> debug1: SSH2_MSG_KEXINIT received
> >> debug1: kex: server->client aes128-ctr hmac-md5 none
> >> debug1: kex: client->server aes128-ctr hmac-md5 none
> >> debug1: sending SSH2_MSG_KEXDH_INIT
> >> debug1: expecting SSH2_MSG_KEXDH_REPLY
> >> debug1: Host '192.168.1.113' is known and matches the RSA host key.
> >> debug1: Found key in /home/rray/.ssh/known_hosts:78
> >> debug1: ssh_rsa_verify: signature correct
> >> debug1: SSH2_MSG_NEWKEYS sent
> >> debug1: expecting SSH2_MSG_NEWKEYS
> >> debug1: SSH2_MSG_NEWKEYS received
> >> debug1: SSH2_MSG_SERVICE_REQUEST sent
> >> debug1: SSH2_MSG_SERVICE_ACCEPT received
> >> debug1: Authentications that can continue: publickey,password
> >> debug1: Next authentication method: publickey
> >> debug1: Offering public key: /home/rray/.ssh/id_rsa
> >> debug1: Authentications that can continue: publickey,password
> >> debug1: Trying private key: /home/rray/.ssh/identity
> >> debug1: Trying private key: /home/rray/.ssh/id_dsa
> >> debug1: Next authentication method: password
> >> root@192.168.1.113's password:
> >>
> >>
> >> Richard
> >>
> >>
> >> --
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> >> listmaster@lists.debian.org
> >> Archive: http://lists.debian.org/**alpine.DEB.2.00.1206150521350.**
> >> 3036@tehzcl2.tehzcl-arg<alpine.DEB.2.00.1206150521350.3036@tehzcl2.tehzcl-arg">http://lists.debian.org/alpine.DEB.2.00.1206150521350.3036@tehzcl2.tehzcl-arg>
> >>
> >>
> >
> 
> 
You have to double check access rights and ownership for both .ssh/
(0700) and authorized_keys (0600), or dropbear will just silently
ignore keys

Nebojša


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