Implementing AES-128 in C++: Key Schedule, Round Functions, and File I/O
AES (Advanced Encryption Standard, Rijndeal) is a symmetric block cipher standardized in FIPS-197. It operates on 128-bit blocks and supports key sizes of 128, 192, or 256 bits. This guide focuses on AES-128 and shows a clean C++ implementation of the key schedule (key expansion), block encryption/d...