WireGuard and the crypto API

When last we looked in on the progress of the WireGuard VPN tunnel toward the mainline kernel, it seemed like the main sticking point had been overcome. The Zinc cryptography API used by WireGuard was generally seen as a duplication of effort with the existing kernel cryptographic algorithms, so an effort to rework Zinc to use that existing code seemed destined to route around that problem and bring WireGuard to the mainline. In the six months since then, though, things have gone fairly quiet in WireGuard-land; that all changed based on a conversation at the recent Kernel Recipes conference in Paris.

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