(CkPython) SSH Authentication using an SSH Certificate

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Note: This example requires Chilkat v11.0.0 or greater.

For more information, see https://www.chilkatsoft.com/understanding_ssh_certificates.asp

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import sys
import chilkat

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

sbSshCert = chilkat.CkStringBuilder()
success = sbSshCert.LoadFile("qa_data/sshCert/user_ecdsa_key-cert.pub","utf-8")
if (success == False):
    print("Failed to load user_ecdsa_key-cert.pub")
    sys.exit()

sbPrivKey = chilkat.CkStringBuilder()
success = sbPrivKey.LoadFile("qa_data/sshKeys/user_ecdsa_key","utf-8")
if (success == False):
    print("Failed to load user_ecdsa_key")
    sys.exit()

key = chilkat.CkSshKey()
# Provide the password if the user_ecdsa_key is stored in an encrypted format.
key.put_Password("secret")
success = key.FromOpenSshPrivateKey(sbPrivKey.getAsString())
if (success == False):
    print(key.lastErrorText())
    sys.exit()

# Indicate that the SSH certificate is to be used for authentication.
# The UseSshCertificate method was added in Chilkat v11.0.0
key.UseSshCertificate(sbSshCert.getAsString())

ssh = chilkat.CkSsh()

hostname = "ssh.example.com"
port = 22
success = ssh.Connect(hostname,port)
if (success != True):
    print(ssh.lastErrorText())
    sys.exit()

success = ssh.AuthenticatePk("myLogin",key)
if (success != True):
    print(ssh.lastErrorText())
    sys.exit()

print("Public-Key Authentication using an SSH Certificate was Successful!")