PrivacyScanData/target/Hash/EncryptionDecryption_2.py

def encrypt(self, key, filename):
        chunksize = 128 * 1024
        outFile = os.path.join(os.path.dirname(filename), "(Secured)" + os.path.basename(filename))
        filesize = str(os.path.getsize(filename)).zfill(16)
        IV = Random.new().read(AES.block_size)
        print(IV, len(IV))
        encryptor = AES.new(key, AES.MODE_CBC, IV)

        with open(filename, "rb") as infile:
            with open(outFile, "wb") as outfile:
                outfile.write(filesize.encode('utf-8'))
                outfile.write(IV)
                while True:
                    chunk = infile.read(chunksize)
                    if len(chunk) == 0:
                        break
                    elif len(chunk) % 16 != 0:
                        chunk += b' ' * (16 - (len(chunk) % 16))
                    outfile.write(encryptor.encrypt(chunk))
        return outFile