Why it matters

SHA-3 is modern hash option. Understanding shapes crypto.

Advertisement

The architecture

Sponge construction: absorb + squeeze.

SHA3-256 + SHA3-512 + SHAKE variants.

SHA-3 spongeAbsorbinput xor statePermutationKeccak-fSqueezeoutputSHA-2 still widely used; SHA-3 alternative not replacement
SHA-3.
Advertisement

How it works end to end

Keccak 2012 NIST winner.

SHA3-256/512.

SHAKE for XOF (extendable output).

Different structure from SHA-2.