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SHAKE Stirs-up Crypto

When I teach cryptography, I normally define the hashing methods (MD5, SHA-1, SHA-256, and so on), the symmetric key methods (AES, 3DES, ChaCha20, and so on), and asymmetric key methods (ECC, RSA, ElGamal, and so on). And so I include SHA-3 as a hashing method, in the same old way I talk about MD5, SHA-1 and SHA-256. We feed in some data, and out pops a fixed-length hash signature.