Go 1.11beta3 is in average 11x faster for crypto/tls benchmarks on ARM64

Sadly if you use the latest stream cipher that crypto people are hot on, and will often be the default in TLS 1.3, you’ll get no benefit :( ARM64 only has instructions for AES.

Yeah, that's what using hardware specific instructions will get you. Haven't read the changelog, assuming so based on the fact is ARM and the improvement yield.

Can someone explain to me why there is an inherent contradiction in that hardware/software keep trying to be faster in crypto computation, while crypto algorithms (like argon2?) keep trying to be harder and harder to run fast?

For encrypted streams, for example, or Web requests even, is crypto often the latency bottleneck?