SSH: It keeps asking the passphrase!

From: Filipe Litaiff (filipe_litaiff@optiglobe.com.br)
Date: Wed Nov 17 2004 - 08:47:59 EST


Greetings Forumers,

We have here two servers. A Sun Solaris with Openssh 3.1 and a HP-UX
with OpenSSH 3.8, OpenSSL 0.9.7d.
We are trying to stabilish a trusted relationship by SSH between both
servers, and despite the DSA key is being generated without a passphrase
( ssh-keygen -t dsa -N"" ), when we try to login, the passphrase is
still being asked.
We are clueless at this time and any help would be much appreciated.

If anyone knows a more adequate forum for this issue, please let us
know.

The printout of the problem is appended to this message.

Thanks, Filipe.
========================================================================
===========

server:/tmp# ssh -vvv -i id_dsa.pub itochecker@200.185.7.11
OpenSSH_3.8 , OpenSSL 0.9.7d 17 Mar 2004
HP-UX_Secure_Shell-A.03.81.002, HP_UX Secure Shell version
debug1: Reading configuration data /opt/ssh/etc/ssh_config
debug3: Seeding PRNG from /opt/ssh/libexec/ssh-rand-helper
debug2: ssh_connect: needpriv 0
debug1: Connecting to 200.185.7.11 [200.185.7.11] port 22.
debug1: Connection established.
debug3: Not a RSA1 key file id_dsa.pub.
debug1: identity file id_dsa.pub type 2
debug1: Remote protocol version 1.99, remote software version
OpenSSH_3.1p1
debug1: match: OpenSSH_3.1p1 pat OpenSSH_2.*,OpenSSH_3.0*,OpenSSH_3.1*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_3.8
debug3: RNG is ready, skipping seeding
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit:
diffie-hellman-group-exchange-sha1,diffie-hellman-group1-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-c
bc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr
debug2: kex_parse_kexinit:
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-c
bc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-9
6,hmac-md5-96
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-9
6,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-group-exchange-sha1,diffie-hellman-group1-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-c
bc
debug2: kex_parse_kexinit:
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-c
bc
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-9
6,hmac-md5-96
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-9
6,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: mac_init: found hmac-md5
debug1: kex: server->client aes128-cbc hmac-md5 none
debug2: mac_init: found hmac-md5
debug1: kex: client->server aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug2: dh_gen_key: priv key bits set: 119/256
debug2: bits set: 547/1024
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug3: check_host_in_hostfile: filename /.ssh/known_hosts
debug2: key_type_from_name: unknown key type '1024'
debug3: key_read: missing keytype
debug3: check_host_in_hostfile: match line 126
debug1: Host '200.185.7.11' is known and matches the RSA host key.
debug1: Found key in /.ssh/known_hosts:126
debug2: bits set: 505/1024
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: id_dsa.pub (4002ea18)
debug1: Authentications that can continue:
publickey,password,keyboard-interactive,hostbased
debug3: start over, passed a different list
publickey,password,keyboard-interactive,hostbased
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: Offering public key: id_dsa.pub
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
debug1: Server accepts key: pkalg ssh-dss blen 433
debug2: input_userauth_pk_ok: fp
76:f5:bf:6c:5c:a4:96:af:c2:56:2f:eb:84:27:d3:28
debug3: sign_and_send_pubkey
debug1: PEM_read_PrivateKey failed
debug1: read PEM private key done: type <unknown>
Enter passphrase for key 'id_dsa.pub':
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