(Python) Determine if a Zip is Encrypted or Password-Protected

Determins whether or not a zip archive is AES encrypted or password-protected.

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import sys
import chilkat

zip = chilkat.CkZip()

#  Any string unlocks the component for the 1st 30-days.
success = zip.UnlockComponent("Anything for 30-day trial")
if (success != True):
    print zip.lastErrorText()
    sys.exit()

#  An encrypted or password-protected zip can be opened
#  without specifying the password.  However, the contents
#  of the files cannot be unzipped without providing the correct
#  password.

success = zip.OpenZip("something.zip")
if (success != True):
    print zip.lastErrorText()
    sys.exit()

#  If the zip is password-protected, meaning that it uses
#  the old (insecure) Zip 2.0 encryption, then the
#  PasswordProtect property will be True
bPwdProt = zip.get_PasswordProtect()
if (bPwdProt):
    print "This zip is password-protected."

#  If the zip is AES encrypted (WinZip compatible) then
#  the Encryption property will be equal to 4.
encValue = zip.get_Encryption()
if (encValue == 4):
    print "This zip is AES encrypted."

#  If the Encryption property = 0, then the zip is NOT
#  strong encrypted, and is either password-protected or
#  entirely unencrypted, depending on the value of the
#  PasswordProtect property.

#  If the Encryption property = 1, 2, or 3, then the zip was
#  encrypted using AES, Blowfish, or Twofish using a
#  Chilkat-specific encryption format that was implemented
#  prior to the publication of the Zip AES standard.

zip.CloseZip()