(Chilkat2-Python) Encrypt / Decrypt a File and Verify it has not Changed

Demonstrates how to encrypt and decrypt a file, and verify it has not changed.

Chilkat2 Python Downloads install with pip pip3 install chilkat2 or download... Python Module for Windows, Linux, Alpine Linux, MacOS, Solaris

import chilkat2

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

crypt = chilkat2.Crypt2()

crypt.CryptAlgorithm = "aes"
crypt.CipherMode = "cbc"
crypt.KeyLength = 128
crypt.PaddingScheme = 0

ivHex = "000102030405060708090A0B0C0D0E0F"
crypt.SetEncodedIV(ivHex,"hex")

keyHex = "00010203040506071011121314151617"
crypt.SetEncodedKey(keyHex,"hex")

dataFile = "qa_data/zips/HBIQ040615300005.ZIP"
outFile = "qa_output/HBIQ040615300005.enc"
outFile2 = "qa_output/HBIQ040615300005.ZIP"

success = crypt.CkEncryptFile(dataFile,outFile)
success = crypt.CkDecryptFile(outFile,outFile2)

fac = chilkat2.FileAccess()
bEqual = fac.FileContentsEqual(dataFile,outFile2)
if (bEqual != True):
    print("Decrypted file not equal to the original.")
else:
    print("Success.")