Bonjour,
Suite à la mise à jour de Kubuntu, je ne parviens plus à me connecter en ssh, comme je le fais habituellement.
ssh-add /chemin_de_la_cle_ssh
Enter passphrase for ...
Identity added: ...
Jusque là tout vas bien, puis je tente de me connecter :
ssh -v user@domain.tld
penSSH_7.2p2 Ubuntu-4, OpenSSL 1.0.2g-fips 1 Mar 2016
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to domain.tld [MON_IP] port 22.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_rsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/user/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.7p1 Raspbian-5+deb8u1
debug1: match: OpenSSH_6.7p1 Raspbian-5+deb8u1 pat OpenSSH* compat 0x04000000
debug1: Authenticating to domain.tld:22 as 'user'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256@libssh.org
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:gC9NyLcocwT4NotoGFM9h+6frb6PDEecc3a0cxoRgC4
debug1: Host 'domain.tld' is known and matches the ECDSA host key.
debug1: Found key in /home/user/.ssh/known_hosts:1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS received
debug1: Skipping ssh-dss key /home/user/.ssh/ma_cle - not in PubkeyAcceptedKeyTypes
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /home/user/.ssh/id_rsa
debug1: Trying private key: /home/user/.ssh/id_dsa
debug1: Trying private key: /home/user/.ssh/id_ecdsa
debug1: Trying private key: /home/user/.ssh/id_ed25519
debug1: No more authentication methods to try.
Permission denied (publickey).
Sur mon pc portable, qui est sous kubuntu mais dont je n'ai pas encore faire la mise à jour, je parviens à me connecter au serveur avec la même cle. Je ne sais pas ce qui à changé avec la mise à jour de Kubuntu? une idée?
Je viens de comparer avec mon pc portable il y a une différence, je n'ai pas cette ligen :
Skipping ssh-dss key /home/user/.ssh/ma_cle - not in PubkeyAcceptedKeyTypes
9a doit avoir un rapport avec un "type" de clé? Je vais chercher sur le net ^.^
[résolu]
Bon bah il semble que j’étais pas du tout à jour avec mes cles.
J'ai essayé en créant un cle de type ed25519 et je suis parvenue à me connecter.
Voici les sites qui m'ont aidé à comprendre :
https://perezdecastro.org/2015/old-ssh-keys.html
https://wiki.archlinux.org/index.php/SSH_keys#Choosing_the_type_of_encryption
http://www.e-ducat.fr/bitcoin-2/securite-signatures-ecdsa/
Si ça peut aider d'autres noobs
