example-aes-256-py

This is a demo project that demonstrates how AES-based encryption & decryption workes on the code.
Hopefully this will be helpful to understand the basic process of the end-to-end data security between web pages and server application.
(It may require additional package installation.)

How does AES-256-CBC encryption work?

1. Create secret key with the algorithm like SHA-256 hashing.
2. Additional (blank) buffers will be padded at the end of the original data to make sure the whole data length will be multiple of the block size. (mostly 16)
3. Encrypt the data above with secret key & IV(Initialization Vector) data. (IV is used for the encryption during the block initialization)
4. Combine IV & encrypted data in base64 format as the result.