Technically Keccak ≠ SHA-3 about hashes HOT 4 CLOSED

Keccak is the sponge function at the core of the entire SHA-3 family, including the SHA-3 digest function itself and the SHAKE XOFs.

Is this issue regarding Keccak being in the "Alt name" column for SHA-3?

from hashes.

Yes that's what I mean Keccak isn't another name for SHA-3 but rather a very similar hash function.

from hashes.

Keccak isn't a hash function, it's a sponge function. You can build many different cryptographic primitives on top of it, from hash functions (see also TupleHash) to XOFs (SHAKE) to MACs (KMAC) to PRFs (Kravatte) to authenticated encryption (Keyak).

from hashes.

Are you talking about readme or about Keccak224, Keccak256, etc. implementations in the sha3 crate? If it's about former, then citing Keccak paper:

Keccak is a family of cryptographic hash functions or, more accurately, sponge functions. This document describes the properties of the Keccak family and presents its members as candidates to NIST’s request for a new cryptographic hash algorithm family called SHA-3.

So you are right, it's not ≠ realtion, but SHA-3 is rather a subset of Keccak primitives family, so I think it's reasonable to use it as an alt name.

from hashes.