Verify a Zip's Password

Demonstrates how to verify the password for an encrypted or password-protected zip archive.

Download Chilkat Zip ActiveX (includes objects for .zip, .gz, .bz2, and .Z)

Dim zip As New ChilkatZip2

Dim success As Long

'  Any string unlocks the component for the 1st 30-days.
success = zip.UnlockComponent("Anything for 30-day trial")
If (success <> 1) Then
    MsgBox zip.LastErrorText
    Exit Sub
End If

'  To verify a password for a Zip, the Zip must be opened:
success = zip.OpenZip("myProtected.zip")
If (success <> 1) Then
    MsgBox zip.LastErrorText
    Exit Sub
End If

'  Set the password to be verified:
zip.DecryptPassword = "secret"

Dim passwordOk As Long
passwordOk = zip.VerifyPassword()
If (passwordOk = 1) Then
    MsgBox "Password is correct."
Else
    MsgBox "Password is incorrect."
End If

zip.CloseZip