[$] Zinc: a new kernel cryptography API

We looked at
the WireGuard virtual private
network (VPN)
back in August and noted that it is built on top of a new
cryptographic API being developed for the kernel, which is called
Zinc. There has been some controversy about Zinc and why a brand new
API was needed when the kernel already has an extensive crypto API. A recent
talk by lead WireGuard developer Jason Donenfeld at Kernel
Recipes 2018 would appear to be a serious attempt to reach out, engage
with that question, and explain the what, how, and why of Zinc.