How to ssh connect through python Paramiko with ppk public key

Question

i m using Paramiko to connect through ssh to a server   Basic authentication works well  but i can t understand how to connect with public key   When i connect with putty  the server tell me this   Using username  root   Authenticating with public key  rsa-key ddddd com  Passphrase for key  rsa-key ddddd com    i ve inserted the passphrase here  Last login  Mon Dec  5 09 25 18 2011 from       I connect to it with this ppk file   PuTTY-User-Key-File-2  ssh-rsa Encryption  aes256-cbc Comment  rsa-key dddd com Public-Lines  4  4 lines key  Private-Lines  8  8 lines key  Private-MAC   hash    With basic auth the error i get  from the log  is   DEB  20111205-09 48 44 328  thr 1   paramiko transport  userauth is OK DEB  20111205-09 48 44 927  thr 1   paramiko transport  Authentication type  password  not permitted  DEB  20111205-09 48 44 927  thr 1   paramiko transport  Allowed methods    publickey    gssapi-with-mic     I ve tried to include that ppk file and set to auth public key  but didn t work   Can you help me

User · Answer

For me I doing this   import paramiko hostname    my hostname or IP   myuser      the user to ssh connect  mySSHK       path to sshkey pub  sshcon     paramiko SSHClient      will create the object sshcon set missing host key policy paramiko AutoAddPolicy      no known hosts error sshcon connect hostname  username myuser  key filename mySSHK    no passwd needed   works for me pretty ok

User · Answer

Ok  Adam and  Kimvais were right  paramiko cannot parse  ppk files   So the way to go  thanks to  JimB too  is to convert  ppk file to openssh private key format  this can be achieved using Puttygen as described here   Then it s very simple getting connected with it   import paramiko ssh   paramiko SSHClient    ssh set missing host key policy paramiko AutoAddPolicy     ssh connect   lt hostname gt    username   lt username gt    password   lt password gt    key filename   lt path to openssh-private-key-file gt     stdin  stdout  stderr   ssh exec command  ls   print stdout readlines   ssh close

User · Answer

VonC s answer to a duplicate question   If  as commented  Paraminko does not support PPK key  the official solution  as seen here  would be to use PuTTYgen  But you can also use the Python library CkSshKey to make that same conversion directly in your program  See  quot Convert PuTTY Private Key  ppk  to OpenSSH  pem  quot  import sys import chilkat  key   chilkat CkSshKey       Load an unencrypted or encrypted PuTTY private key      If  your PuTTY private key is encrypted  set the Password    property before calling FromPuttyPrivateKey     If your PuTTY private key is not encrypted  it makes no diffference    if Password is set or not set  key put Password  quot secret quot       First load the  ppk file into a string   keyStr   key loadText  quot putty private key ppk quot       Import into the SSH key object  success   key FromPuttyPrivateKey keyStr  if  success    True       print key lastErrorText        sys exit       Convert to an encrypted or unencrypted OpenSSH key      First demonstrate converting to an unencrypted OpenSSH key  bEncrypt   False unencryptedKeyStr   key toOpenSshPrivateKey bEncrypt  success   key SaveText unencryptedKeyStr  quot unencrypted openssh pem quot   if  success    True       print key lastErrorText        sys exit

User · Answer

To create a valid DSA format private key supported by Paramiko in Puttygen    Click on Conversions then Export OpenSSH Key

[python] How to ssh connect through python Paramiko with ppk public key

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