(PowerShell) Unzip an AES Encrypted Text File directly into a String Variable

A common need is to unzip from an AES encrypted Zip archive directly into a string variable, such that the unencrypted file never resides on disk, even temporarily. This example shows how to do it.

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.

$zip = New-Object Chilkat.Zip

# This example opens a WinZip-compatible AES encrypted
# .zip that contains a single file: hamlet.xml.

# It decrypts and unzips hamlet.xml directly into a string
# variable.
$zip.SetPassword("secret")
$success = $zip.OpenZip("qa_data/hamlet.zip")
if ($success -ne $true) {
    $($zip.LastErrorText)
    exit
}

$entry = $zip.GetEntryByName("hamlet.xml")
if ($zip.LastMethodSuccess -eq $false) {
    $("Failed to find entry in zip")
    exit
}

# lineEndingBehavior:
# 0 = leave unchanged.
# 1 = convert all to bare LF's
# 2 = convert all to CRLF's
$lineEndingBehavior = 0
$srcCharset = "utf-8"
$xmlText = $entry.UnzipToString($lineEndingBehavior,$srcCharset)
$($xmlText)