(PowerShell) SFTP Public-Key Authentication (id_ed25519)

See more SFTP Examples

Demonstrates how to authenticate with an SSH/SFTP server using publickey authentication with an Ed25519 private key (id_ed25519).

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

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

$key = New-Object Chilkat_9_5_0.SshKey

# The id_ed25519 file should contain something like this:
# (You can open it in a text editor..)

# -----BEGIN OPENSSH PRIVATE KEY-----
# b3BlbnNzaC1rZXktdjEAAAAACmFlczI1Ni1jdHIAAAAGYmNyeXB0AAAAGAAAABDIeK9+Xw
# 6Do9gnhtrJu5iJAAAAZAAAAAEAAAAzAAAAC3NzaC1lZDI1NTE5AAAAIMh/Ge7fjQCssmVd
# BqjYZbRAI0pY8IrnB6J1yLetq34OAAAAoMVP7cvy4hTiAINA3I4v55OonkpKza8mzfUW18
# RDQeYL3ovCVaAYOGcCpf/SW3QiY6tnXq+5WDEfJ7Z/kQ0nl2+1wSLOytxpyO+IY0rRtLrX
# 6e/agR4nbZpt/MFG6xqcNASbtDgg+9IWGvDrtXOLFofx07/zml+UjFL0tXRpCjOxeqKyXH
# t8SRgdT97d9/bYPwapaXY+b2DVVy5/LVx4Sq8=
# -----END OPENSSH PRIVATE KEY-----

$privKeyText = $key.LoadText("c:/temp/id_ed25519")
if ($key.LastMethodSuccess -ne $true) {
    $($key.LastErrorText)
    exit
}

# If your private key was saved encrypted, then you'll need the password.
# In this example, the password "blahblah" is valid for the above key -- which is a real Ed25519 key generated/saved from puttygen.
$key.Password = "blahblah"

$success = $key.FromOpenSshPrivateKey($privKeyText)
if ($success -ne $true) {
    $($key.LastErrorText)
    exit
}

$sftp = New-Object Chilkat_9_5_0.SFtp

# Set some timeouts, in milliseconds:
$sftp.ConnectTimeoutMs = 5000
$sftp.IdleTimeoutMs = 15000

$hostname = "sftp.example.com"
$port = 22
$success = $sftp.Connect($hostname,$port)
if ($success -ne $true) {
    $($sftp.LastErrorText)
    exit
}

# Authenticate with the SSH server.  Chilkat SFTP supports
# both password-based authenication as well as public-key
# authentication.  
$success = $sftp.AuthenticatePk("myLogin",$key)
if ($success -ne $true) {
    $($sftp.LastErrorText)
    exit
}

$($sftp.LastErrorText)
$("Public-Key Authentication Successful!")

# Now go do whatever you're app needs to do...