(VBScript) 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.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

success = 0

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

set zip = CreateObject("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 = 0) Then
    outFile.WriteLine(zip.LastErrorText)
    WScript.Quit
End If

set entry = CreateObject("Chilkat.ZipEntry")
success = zip.EntryOf("hamlet.xml",entry)
If (success = 0) Then
    outFile.WriteLine(zip.LastErrorText)
    WScript.Quit
End If

' 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)
outFile.WriteLine(xmlText)

outFile.Close