CkPython

Determine if a Zip is Encrypted or Password-Protected

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

import sys
import chilkat

success = False

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

zip = chilkat.CkZip()

# 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.

zip.CloseZip()