CkPython

Set an FTPS Client Certificate from PEM

Demonstrates the Chilkat Ftp2.SetSslClientCertPem method, which configures a client certificate and private key from PEM. The first argument may be the PEM text or a PEM file path, and the second is the private-key password (empty when the key is not encrypted).

Note: The local paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the PEM-based form of setting the mutual-TLS client certificate — convenient when the certificate and key already live in a .pem file, the common format from OpenSSH and Unix tooling. Use SetSslClientCertPfx instead for a PKCS#12 .pfx/.p12 bundle. As with any client certificate, set it before connecting.

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import sys
import chilkat

success = False

#  Demonstrates the Ftp2.SetSslClientCertPem method, which configures a client certificate and
#  private key from PEM.  The 1st argument is the PEM text or a PEM file path, and the 2nd is the
#  private-key password (empty when the key is not encrypted).

ftp = chilkat.CkFtp2()

ftp.put_Hostname("ftp.example.com")
ftp.put_Username("myFtpLogin")

#  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.
ftp.put_Password("myPassword")

#  Use explicit FTPS (AUTH TLS) on the standard FTP port.
ftp.put_AuthTls(True)

#  Provide the PEM client certificate before connecting.  The password should come from a secure
#  source rather than being hard-coded.
pemPassword = "myPemPassword"
success = ftp.SetSslClientCertPem("qa_data/client.pem",pemPassword)
if (success == False):
    print(ftp.lastErrorText())
    sys.exit()

success = ftp.Connect()
if (success == False):
    print(ftp.lastErrorText())
    sys.exit()

print("Connected with a PEM client certificate.")

success = ftp.Disconnect()
if (success == False):
    print(ftp.lastErrorText())
    sys.exit()