SSH Authenticate with a SecureString Password and Private Key

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Demonstrates the Chilkat Ssh.AuthenticateSecPwPk method, which performs the same combined password/private-key authentication as AuthenticatePwPk but receives the username and password as SecureString objects. The third argument is the SshKey private key.

Note: The private-key path is relative to the application's current working directory. Supply the path to your own key file.

load ./chilkat.dll

set success 0

#  Demonstrates the Ssh.AuthenticateSecPwPk method, which authenticates using SecureString login
#  and password objects together with a private key.  The 1st argument is the username, the 2nd
#  is the password, and the 3rd is an SshKey private key.

set ssh [new_CkSsh]

#  Connect to the SSH server.  Port 22 is the usual SSH port.
set sshPort 22
set success [CkSsh_Connect $ssh "ssh.example.com" $sshPort]
if {$success == 0} then {
    puts [CkSsh_lastErrorText $ssh]
    delete_CkSsh $ssh
    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.
set password "mySshPassword"

#  Load the SSH private key.  LoadText reads the file's text, which is then imported.
set privKey [new_CkSshKey]

set keyStr [CkSshKey_loadText $privKey "qa_data/id_rsa"]
if {[CkSshKey_get_LastMethodSuccess $privKey] == 0} then {
    puts [CkSshKey_lastErrorText $privKey]
    delete_CkSsh $ssh
    delete_CkSshKey $privKey
    exit
}

set success [CkSshKey_FromOpenSshPrivateKey $privKey $keyStr]
if {$success == 0} then {
    puts [CkSshKey_lastErrorText $privKey]
    delete_CkSsh $ssh
    delete_CkSshKey $privKey
    exit
}

#  Place the login and password into SecureString objects.
set secureLogin [new_CkSecureString]

CkSecureString_Append $secureLogin "mySshLogin"
set securePassword [new_CkSecureString]

CkSecureString_Append $securePassword $password

set success [CkSsh_AuthenticateSecPwPk $ssh $secureLogin $securePassword $privKey]
if {$success == 0} then {
    puts [CkSsh_lastErrorText $ssh]
    delete_CkSsh $ssh
    delete_CkSshKey $privKey
    delete_CkSecureString $secureLogin
    delete_CkSecureString $securePassword
    exit
}

puts "Authenticated."

CkSsh_Disconnect $ssh

delete_CkSsh $ssh
delete_CkSshKey $privKey
delete_CkSecureString $secureLogin
delete_CkSecureString $securePassword