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KMAC is the message authentication code built on SHA-3. It needs no HMAC-style double hashing, because the Keccak sponge resists length extension. Learn how cSHAKE, the key block, and the encoded output length work, with every NIST sample checked.
17 min read
Most hash functions give you a fixed-size output no matter what you ask for. SHAKE breaks that rule: it's a hash function you can ask for any amount of output from, built from the same Keccak sponge as SHA-3.
10 min read
SHA-3, also known as **Keccak** (pronounced 'ketchak'), is the newest member of the Secure Hash Algorithm family standardized by NIST.
11 min read
