burak-gunay/AES_encryption

Secret Messages

Source code is in hw2.py In order to use this tool, ensure you have Python's cryptography package installed. sourcing

Initially, you will need to generate a key. To do so, write in the shell;

python3 hw2.py generate

This will create a key file and save it as AESkey.key

Afterwards, you can encrypt a message like this;

python3 hw2.py encrypt FILENAME.EXTENSION

This will create the encrypted file (FILENAME.enc) and unique IV (FILENAME.enc.iv). To encrypt, it will use the AESkey.key that was generated prior

To decrypt the message, you should do;

python3 hw2.py decrypt ENCRYPTEDFILE #Last argument should be FILENAME.EXTENSION.enc

The program is expecting to receive the same filename for the encrypted file as it generated, FILENAME.enc. When this is complete, it will save the decrypted message as FILENAME.encDECRYPTED.

I've provided a sample file called file.txt to test it out.

Sources: The examples in the Cyrptography page[https://cryptography.io/en/latest/], specifically about the implementation of AES and Symmetric Key Padding