This is called "Understanding How AES Encryption Works", but it doesnt describe that. AES is a "block cipher", a primitive that approximates a pseudorandom per

This is called "Understanding How AES Encryption Works", but it doesnt describe that. AES is a "block cipher", a primitive that approximates a pseudorandom permutation (PRP) and can be used to build a variety of functions. E.g. AEADs like AES-CCM and AES-GCM, encryption like AES-CTR, message authentication codes like CMAC, hash functions like Whirlpool (that uses a modified AES), and random number generators like AES-DRBG. In theory one could even build a public-key signature scheme from AES: use it in a Sponge construction to make a hash function, then use that to construct a hash-based signature scheme. The only thing I don't know how to build using just a PRP is a Key Encapsulation Mechanism. This article is a bit like writing "How To Program In C" and talking about NAND gates and ALUs and instruction decoders.