(PowerShell) Iterate Keys and Certs in PEM

Demonstrates how to access each of the private keys and certs contained within a PEM.

Chilkat .NET Downloads Chilkat .NET Assemblies

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

# Starting in v9.5.0.49, all Chilkat classes can be unlocked at once at the beginning of a program
# by calling UnlockBundle.  It requires a Bundle unlock code.
$chilkatGlob = New-Object Chilkat.Global
$success = $chilkatGlob.UnlockBundle("Anything for 30-day trial.")
if ($success -ne $true) {
    $($chilkatGlob.LastErrorText)
    exit
}

# The Chilkat PEM class was introduced in v9.5.0.49.  
# It requires the bundle to be unlocked, as shown above.
$pem = New-Object Chilkat.Pem

# Load the PEM from a file.
# If the PEM is encrypted, provide a password.  Otherwise pass an empty string for the password.
$password = "myPassword"
$success = $pem.LoadPemFile("../myPemFiles/myPem.pem",$password)
if ($success -ne $true) {
    $($pem.LastErrorText)
    exit
}

# Note: If the app already has the PEM pre-loaded in a string variable, then load it 
# by calling LoadPem instead.  
$pemContent = "... the PEM contents ..."
$success = $pem.LoadPem($pemContent,$password)
# Check for success as before..

# Iterate over the private keys.
$numPrivateKeys = $pem.NumPrivateKeys
$i = 0

while ($i -lt $numPrivateKeys) {

    $privKey = $pem.GetPrivateKey($i)
    $("Private Key " + $i + " is " + $privKey.BitLength + " in length")

    $i = $i + 1
}

# Iterate over the certificates.
$numCerts = $pem.NumCerts
$i = 0

while ($i -lt $numCerts) {

    $cert = $pem.GetCert($i)
    $("Certificate " + $i + " : " + $cert.SubjectDN)

    $i = $i + 1
}