AES 256 Encryption and Decryption

A beginner-friendly console project demonstrating AES-256 encryption and decryption in Python. It uses AES in GCM mode (authenticated encryption) with a key derived from your password via scrypt.

Choose 1 to encrypt a message (prints the cipher text, salt, nonce and tag) or 2 to decrypt by entering those values back.

Example

                AES 256 Encryption and Decryption Algorithm
                -------------------------------------------

Enter 1 to encrypt and 2 to decrypt: 1
Enter the Password: hunter2

Enter the Secret Message: meet me at noon

Encrypted:
---------------

cipher_text: 9pX2k7Qe1A==
salt: Hh0r2Hk9pQqVz8m1Yw3aBQ==
nonce: Lm4nKp7Rt2sVx8yZ
tag: Tz1qWe4rUi7oPa2sDf5gHj==

To recover the message, run the program again, choose 2, and enter the four values above along with the same password.

How to run on localhost

pip install pycryptodomex
python AES256.py

Dependencies

• pycryptodomex — the Cryptodome AES implementation