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Re: troca de chaves

Oi Allisson,
Na verdade não, mas tenho ctz que isso não influencia. Essa flag só tem significado qdo o modo de autenticação é password. Quando é pubkey essa flag não faz diferente. Acabei de testar, trocando chave com outra máquina (também rodando ubuntu karmic) que tem a flag "PermitEmptyPasswords" setado para "no" e deu certo. 



Allison Vollmann wrote:

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Habilitou a opção "PermitEmptyPasswords" no sshd_config? 

Em 27/4/2010 15:22, Leonardo Carneiro - Veltrac escreveu:

Já fiz troca de chaves um bilhão de vezes, mas por algum motivo,
essa vez estou tendo problemas. Estou enviando a chave de um
servidor Debian Lenny para um host Ubuntu Karmic Koala para que o
Debian possa logar no Ubuntu sem senha. Segue o procedimento:

kody:~# ssh-keygen -b 4096 -t rsa
kody:~# ssh-copy-id -i ~/.ssh/id_rsa.pub usuario@maquina_ubuntu

Entro com a senha da máquina ubuntu, e teoricamente era pra estar
tudo certo. Porém, ao tentar logar na máquina ubuntu, o ssh continua
pedindo a senha (mesmo tendo deixado a senha em branco no comando
ssh-keygen). Segue o debug do ssh


kody:~# ssh -vvv usuario@ubuntu_ip
OpenSSH_5.1p1 Debian-5, OpenSSL 0.9.8g 19 Oct 2007
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *                       debug2:
ssh_connect: needpriv 0                      debug1: Connecting to
192.168.1.107 [192.168.1.107] port 22.
debug1: Connection established.                            debug1:
permanently_set_uid: 0/0                           debug1: identity
file /root/.ssh/identity type -1          debug3: Not a RSA1 key
file /root/.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                       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                       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                       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
/root/.ssh/id_rsa type 1             debug1: Checking blacklist file
/usr/share/ssh/blacklist.RSA-4096
debug1: Checking blacklist file /etc/ssh/blacklist.RSA-4096 debug3: Not a RSA1 key file /root/.ssh/id_dsa. 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 debug2: key_type_from_name: unknown key type '-----END' debug3: key_read: missing keytype debug1: identity file /root/.ssh/id_dsa type -1 debug1: Remote protocol version 2.0, remote software version 
OpenSSH_5.1p1 Debian-6ubuntu2
debug1: match: OpenSSH_5.1p1 Debian-6ubuntu2 pat
OpenSSH*                                debug1: Enabling
compatibility mode for protocol
2.0                                     debug1: Local version string
SSH-2.0-OpenSSH_5.1p1 Debian-5                              debug2:
fd 3 setting
O_NONBLOCK debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug2: kex_parse_kexinit: 
diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-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,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr

debug2: kex_parse_kexinit:
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr

debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 
debug2: kex_parse_kexinit:
none,zlib@openssh.com,zlib 
debug2: kex_parse_kexinit:
none,zlib@openssh.com,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-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-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,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr

debug2: kex_parse_kexinit:
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour128,arcfour256,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se,aes128-ctr,aes192-ctr,aes256-ctr

debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 
debug2: kex_parse_kexinit:
hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96 
debug2: kex_parse_kexinit:
none,zlib@openssh.com 
debug2: kex_parse_kexinit:
none,zlib@openssh.com 
debug2:
kex_parse_kexinit: 
debug2:
kex_parse_kexinit: 
debug2: kex_parse_kexinit: first_kex_follows
0 
debug2: kex_parse_kexinit: reserved
0 
debug2: mac_setup: found
hmac-md5 
debug1: kex: server->client aes128-cbc hmac-md5
none 
debug2: mac_setup: 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:
130/256 
debug2: bits set:
492/1024 
debug1: SSH2_MSG_KEX_DH_GEX_INIT
sent 
debug1: expecting
SSH2_MSG_KEX_DH_GEX_REPLY 
debug3: check_host_in_hostfile: filename
/root/.ssh/known_hosts 
debug3: check_host_in_hostfile: match line
6 
debug1: Host '192.168.1.107' is known and matches the RSA host
key. 
debug1: Found key in
/root/.ssh/known_hosts:6 
debug2: bits set:
494/1024 
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: /root/.ssh/identity
((nil)) 
debug2: key: /root/.ssh/id_rsa
(0xb7fc7968) 
debug2: key: /root/.ssh/id_dsa
((nil)) 
debug1: Authentications that can continue:
publickey,password 
debug3: start over, passed a different list
publickey,password 
debug3: preferred
gssapi-keyex,gssapi-with-mic,gssapi,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: /root/.ssh/identity
debug3: no such identity: /root/.ssh/identity
debug1: Offering public key: /root/.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: /root/.ssh/id_dsa
debug1: read PEM private key done: type DSA
debug3: sign_and_send_pubkey
debug2: we sent a publickey packet, wait for reply
debug1: Authentications that can continue: publickey,password
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
usuario@ubuntu_ip's password:

Agradeço desde já.


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