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Here's another article just for you:
ktls now under the rustls org
What’s a ktls
I started work on ktls and ktls-sys, a pair of crates exposing Kernel TLS offload to Rust, about two years ago.
kTLS lets the kernel (and, in turn, any network interface that supports it) take care of encryption, framing, etc., for the entire duration of a TLS connection… as soon as you have a TLS connection.
For the handshake itself (hellos, change cipher, encrypted extensions, certificate verification, etc.), you still have to use a userland TLS implementation.