(PowerShell) Convert ASN.1 to/from Binary DER, XML, and Base64

Demonstrates how to convert ASN.1 from and to any of the following formats: binary DER, Base64, and XML.

Chilkat .NET Downloads Chilkat .NET Assemblies

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

$asn = New-Object Chilkat.Asn

# Begin with loading ASN.1 from a binary DER/BER format file.
$success = $asn.LoadBinaryFile("/Users/chilkat/testData/p7b/test.p7b")
if ($success -ne $true) {
    $($asn.LastErrorText)
    exit
}

# Convert ASN.1 to XML:
$strXml = $asn.AsnToXml()
if ($asn.LastMethodSuccess -ne $true) {
    $($asn.LastErrorText)
    exit
}

# The XML returned by AsnToXml will be compact and not pretty-formatted.
# Use Chilkat XML to format the XML better:
$xml = New-Object Chilkat.Xml
$success = $xml.LoadXml($strXml)
# Assuming success for this example..
# This is formatted better for human viewing:
$($xml.GetXml())

# Now get the ASN.1 in base64 format.  Any encoding supported
# by Chilkat can be passed, such as "hex", "uu", "quoted-printable", "base32", "modbase64", etc.
$strBase64 = $asn.GetEncodedDer("base64")

# Load the ASN.1 from XML:
$asn2 = New-Object Chilkat.Asn
$success = $asn2.LoadAsnXml($xml.GetXml())
if ($success -ne $true) {
    $($asn2.LastErrorText)
    exit
}

# Load the ASN.1 from an encoded string, such as base64:
$asn3 = New-Object Chilkat.Asn
$success = $asn3.LoadEncoded($strBase64,"base64")
if ($success -ne $true) {
    $($asn3.LastErrorText)
    exit
}