SSH key generated by ssh-keygen is not recognized by Paramiko: “not a valid RSA private key file”

by

For OpenSSH 7.8 up, you have to trick it. Run ssh-keygen -p [-f file] -m pem to purportedly change passphrase, but reuse the old one. Use -P oldpw -N newpw if you want to avoid the prompts, as in a script, but be careful of making your passphrase visible to other users. As a side effect this rewrites the keyfile (if not ed25519) in ‘old’ (OpenSSL-compatible and thus paramiko-compatible) format. (If you want to keep the new-format file, copy first.)

For older versions of OpenSSH just do ssh-keygen -p [-f file] WITHOUT -o.

Also, if you have (or get) it, the puttygen utility in the PuTTY suite from 0.69 up supports this format. In the Unix version, just do puttygen newfmtfile -O private-openssh -o oldfmtfile (again excepting ed25519). In the Windows version AFAICT you must use the GUI; load the newfmtfile and do Conversions / Export OpenSSH key .

More Related Contents:

  1. Paramiko “Unknown Server”
  2. Is there a simple way to get rid of junk values that come when you SSH using Python’s Paramiko library and fetch output from CLI of a remote machine?
  3. Execute multiple commands in Paramiko so that commands are affected by their predecessors
  4. Nested SSH using Python Paramiko
  5. Running interactive commands in Paramiko
  6. Executing command using Paramiko exec_command on device is not working
  7. How to ssh connect through Python Paramiko with ppk public key
  8. Python Paramiko – Run command
  9. Python – pysftp / paramiko – Verify host key using its fingerprint
  10. Paramiko’s SSHClient with SFTP
  11. Get output from a Paramiko SSH exec_command continuously
  12. Paramiko and Pseudo-tty Allocation
  13. Multi-factor authentication (password and key) with Paramiko
  14. Automate ssh connection and execution of program with Python’s Paramiko
  15. Long-running ssh commands in python paramiko module (and how to end them)
  16. How to list all the folders and files in the directory after connecting through SFTP in Python
  17. Paramiko with continuous stdout
  18. Run multiple commands in different SSH servers in parallel using Python Paramiko
  19. Password authentication in Python Paramiko fails, but same credentials work in SSH/SFTP client
  20. Execute multiple dependent commands individually with Paramiko and find out when each command finishes
  21. Execute (sub)commands in secondary shell/command on SSH server in Python Paramiko
  22. Implement an interactive shell over ssh in Python using Paramiko?
  23. Nested SSH session with Paramiko
  24. Recursive directory download with Paramiko?
  25. How to create a SSH tunnel using Python and Paramiko?
  26. “Failed to load HostKeys” warning while connecting to SFTP server with pysftp
  27. Wait until task is completed on Remote Machine through Python [duplicate]
  28. List files on SFTP server matching wildcard in Python using Paramiko
  29. How to execute a script remotely in Python using SSH?
  30. python paramiko ssh

Leave a Comment