Project source: https://github.com/maandree/sha3sum

Project source: https://github.com/maandree/libkeccak

The sha3sum and keccak checksum utilities from @maandree.

After installing the QPKG, login to your NAS via SSH, then run:

sha3sum --help

QPKG source: https://github.com/OneCDOnly/sha3sum