(PowerShell) SSH Tunnel Authenticate Secure

Demonstrates how to do SSH password authentication with secure strings.

This example requires Chilkat v9.5.0.71 or greater.

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

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

# Imagine we've previously saved our encrypted login and password within a JSON config file
# that contains this:

# {
#   "ssh_login": "2+qylFfC56Ck7OQQt/U2/w==",
#   "ssh_password": "5neIq9Jmn0E3p71N6Yc8TA=="
# }

$json = New-Object Chilkat.JsonObject
$json.LoadFile("qa_data/passwords/ssh.json")

$crypt = New-Object Chilkat.Crypt2

# These are the encryption settings we previously used to encrypt the credentials within the JSON config file.
$crypt.CryptAlgorithm = "aes"
$crypt.CipherMode = "cbc"
$crypt.KeyLength = 128
$crypt.SetEncodedKey("000102030405060708090A0B0C0D0E0F","hex")
$crypt.SetEncodedIV("000102030405060708090A0B0C0D0E0F","hex")
$crypt.EncodingMode = "base64"

$ssLogin = New-Object Chilkat.SecureString
$ssPassword = New-Object Chilkat.SecureString

# Decrypt to the secure string.  (the strings will still held in memory encrypted, but are now encrypted using
# a randomly generated session key.)
$crypt.DecryptSecureENC($json.StringOf("ssh_login"),$ssLogin)
$crypt.DecryptSecureENC($json.StringOf("ssh_password"),$ssPassword)

$tunnel = New-Object Chilkat.SshTunnel

$success = $tunnel.Connect("MY-SSH-SERVER-DOMAIN-OR-IP",22)
if ($success -ne $true) {
    $($tunnel.LastErrorText)
    exit
}

# Authenticate using secure strings
$success = $tunnel.AuthenticateSecPw($ssLogin,$ssPassword)
if ($success -ne $true) {
    $($tunnel.LastErrorText)
    exit
}

$("SSH Tunnel Authentication successful.")

# ...

$tunnel.CloseTunnel($true)