I provided a link to a NIST spec on this exact issue and a stackexchange discussion with lots of eyeballs/votes. Sure, don't just listen to me, but please do li

I provided a link to a NIST spec on this exact issue and a stackexchange discussion with lots of eyeballs/votes. Sure, don't just listen to me, but please do listen to them. Using sha3 as stated above is certainly something to consider for the numerous people out there implementing message authentication into their systems. It's simple and hard to mess up, if I was building a greenfields project today is probably the tool I'd reach for. Libsodium is fairly complex and had it's own issues. Sha3 implementations in most languages are battle-hardened and simple to use.