The article links to the code: https://github.com/robertdavidgraham/whats-enc/blob/master/backend/whats-enc.py https://github.com/robertdavidgraham/whats-enc/bl

The article links to the code: https://github.com/robertdavidgraham/whats-enc/blob/master/backend/whats-enc.py https://github.com/robertdavidgraham/whats-enc/blob/master/b... and provides an explanation of what it does: AES decryption with CBC mode.