Hello, I'm trying to create a blake2b512 digest with a key. I've made an attempt to follow the source code and I'm assuming the algorithm's name for blake2b MAC is blake2bmac, though I have tried different values. I don't seem to be able to create a valid checksum: $ openssl version; echo -n "hello" | openssl dgst -blake2b512 -mac blake2bmac -macopt key:secret OpenSSL 1.1.1d 10 Sep 2019 Algorithm blake2bmac not found Is keyed blake2b supported in openssl-dgst (latest OpenSSL release)? Thanks!