CkPython

SFTP Authenticate with a Password

Demonstrates the Chilkat SFtp.AuthenticatePw method, which authenticates the connected session with a login name and password. The first argument is the login and the second is the password. Call Connect first and InitializeSftp afterward.

Background: Password authentication is the simplest SFTP method, but the password is a secret and should never be a hard-coded literal — obtain it from an interactive prompt, an environment variable, or a secrets vault. Public-key authentication is generally preferred for automated jobs. Note the fixed ordering: authentication happens between Connect and InitializeSftp.

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import sys
import chilkat

success = False

#  Demonstrates the SFtp.AuthenticatePw method, which authenticates the connected session with a
#  login name and password.  The 1st argument is the login and the 2nd is the password.

sftp = chilkat.CkSFtp()

#  Step 1: Connect the SSH transport.  Port 22 is the usual port.
port = 22
success = sftp.Connect("sftp.example.com",port)
if (success == False):
    print(sftp.lastErrorText())
    sys.exit()

#  Normally you would not hard-code the password in source.  You should instead obtain it
#  from an interactive prompt, environment variable, or a secrets vault.
password = "mySshPassword"

success = sftp.AuthenticatePw("mySshLogin",password)
if (success == False):
    print(sftp.lastErrorText())
    sys.exit()

#  Step 3: Open the SFTP subsystem.  This must be done after authentication and before any
#  file or directory operations.
success = sftp.InitializeSftp()
if (success == False):
    print(sftp.lastErrorText())
    sys.exit()

print("Authenticated with a password.")

sftp.Disconnect()