(PowerShell) SFTP Authentication using an SSH Certificate

See more SFTP Examples

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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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.

$sbSshCert = New-Object Chilkat.StringBuilder
$success = $sbSshCert.LoadFile("qa_data/sshCert/user_ecdsa_key-cert.pub","utf-8")
if ($success -eq $false) {
    $("Failed to load user_ecdsa_key-cert.pub")
    exit
}

$sbPrivKey = New-Object Chilkat.StringBuilder
$success = $sbPrivKey.LoadFile("qa_data/sshKeys/user_ecdsa_key","utf-8")
if ($success -eq $false) {
    $("Failed to load user_ecdsa_key")
    exit
}

$key = New-Object Chilkat.SshKey
# Provide the password if the user_ecdsa_key is stored in an encrypted format.
$key.Password = "secret"
$success = $key.FromOpenSshPrivateKey($sbPrivKey.GetAsString())
if ($success -eq $false) {
    $($key.LastErrorText)
    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())

$sftp = New-Object Chilkat.SFtp

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

$success = $sftp.AuthenticatePk("myLogin",$key)
if ($success -ne $true) {
    $($sftp.LastErrorText)
    exit
}

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