SHA-3/224 generator
What SHA-3/224 is
SHA-3 (Keccak family) is not SHA-2 with extra rounds—it uses a sponge construction. The /224 variant truncates the Keccak output to 224 bits. If a colleague compares SHA-224 (SHA-2) against SHA3-224 expecting equality, stop—they are unrelated algorithms sharing only digit counts.
Why adopt SHA-3?
Diversity: if a structural weakness ever appeared in Merkle–Damgård families, SHA-3 offers a different proof line. Most products still default to SHA-256; SHA-3 shows up when standards require it or when you need extendable output (SHAKE) nearby in the same family.
Example
A NIST test vector packet lists SHA3-224 digests; you confirm your library enablement with this page before filing "implementation bug" issues.