Can't ssh from windows to Linux with ssh keys in place

[Alexander Fedyashov]

OpenSSH_3.7.1p1, SSH protocols 1.5/2.0, OpenSSL 0.9.7b 10 Apr 2003
debug1: Reading configuration data /etc/ssh_config
debug2: ssh_connect: needpriv 0
debug1: Connecting to 172.16.2.120 [172.16.2.120] port 22.
debug1: Connection established.
debug1: identity file /home/Administrator/.ssh/identity type -1
debug3: Not a RSA1 key file /home/Administrator/.ssh/id_rsa.
debug2: key_type_from_name: unknown key type '-----BEGIN'
debug3: key_read: missing keytype
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug2: key_type_from_name: unknown key type '-----END'
debug3: key_read: missing keytype
debug1: identity file /home/Administrator/.ssh/id_rsa type 1
debug1: identity file /home/Administrator/.ssh/id_dsa type -1
debug1: Remote protocol version 1.99, remote software version OpenSSH_3.4p1
debug1: match: OpenSSH_3.4p1 pat OpenSSH_3.2*,OpenSSH_3.3*,OpenSSH_3.4*,OpenSSH
3.5*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_3.7.1p1
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha1,diffie-hellman-gr
up1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour
aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-
tr
debug2: kex_parse_kexinit: aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour
aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-
tr
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160@ope
ssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160@ope
ssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: kex_parse_kexinit: diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: 3des-cbc
debug2: kex_parse_kexinit: 3des-cbc
debug2: kex_parse_kexinit: hmac-sha1,hmac-md5,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: hmac-sha1,hmac-md5,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none
debug2: kex_parse_kexinit: none
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: mac_init: found hmac-md5
debug1: kex: server->client 3des-cbc hmac-md5 none
debug2: mac_init: found hmac-md5
debug1: kex: client->server 3des-cbc hmac-md5 none
debug2: dh_gen_key: priv key bits set: 178/384
debug2: bits set: 492/1024
debug1: sending SSH2_MSG_KEXDH_INIT
debug1: expecting SSH2_MSG_KEXDH_REPLY
debug3: check_host_in_hostfile: filename /home/Administrator/.ssh/known_hosts
debug3: check_host_in_hostfile: match line 1
debug1: Host '172.16.2.120' is known and matches the RSA host key.
debug1: Found key in /home/Administrator/.ssh/known_hosts:1
debug2: bits set: 528/1024
debug1: ssh_rsa_verify: signature correct
debug2: kex_derive_keys
debug2: set_newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug2: set_newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug2: key: /home/Administrator/.ssh/identity (0x0)
debug2: key: /home/Administrator/.ssh/id_rsa (0x100fa368)
debug2: key: /home/Administrator/.ssh/id_dsa (0x0)
debug1: Authentications that can continue: publickey,password
debug3: start over, passed a different list publickey,password
debug3: preferred publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /home/Administrator/.ssh/identity
debug3: no such identity: /home/Administrator/.ssh/identity
debug1: Offering public key: /home/Administrator/.ssh/id_rsa
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,password
debug1: Trying private key: /home/Administrator/.ssh/id_dsa
debug3: no such identity: /home/Administrator/.ssh/id_dsa
debug2: we did not send a packet, disable method
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
debug1: Next authentication method: password

Any help would be appreciated.
Thanks,
Alex

[Court Campbell]

can you explain the steps you took to set this up. and what ssh client are you using on the windows side?

[Alexander Fedyashov]

I generated the key on windows:
ssh-keygen -t rsa

copied the key to the Linux box.

formatted the key and concatenated it to authorized_keys:

ssh-keygen -e -f id_rsa.sfvmvcs1 >> authorized_keys

[Court Campbell · Accepted solution]

I am assuming that the file id_rsa.sfvmvcs1 is your public key. If it isn't that could be a problem. ssh-keygen should have created a file called is_rsa.pub which would be the public file. Moving on, I really do not think that you needed to export the file to IETF SECSH. try just cat'ing your pub key to .ssh/authorized_keys.

You could also try just removing the lines

---- BEGIN SSH2 PUBLIC KEY ----
---- END SSH2 PUBLIC KEY ----

[Alexander Fedyashov]

Yes, it is the public key.

The windows key on the Linux host looks something like this:

---- BEGIN SSH2 PUBLIC KEY ----
Comment: "1024-bit RSA, converted from OpenSSH "

thanks,
Alex

[Court Campbell]

just remove the lines you added and just add the pub key as is.

cat id_rsa.sfvmvcs1 >> .ssh/authorized_keys

[Alexander Fedyashov]

I didn't add any lines.

[Alexander Fedyashov]

Thanks .... at first I didn't know what you meant, but it's working now. I guess I was never supposed to reformat the key for Linux?