Comment by throw0101c

> Has hardware-offload (for AES et al) got faster still, or that keeping CPU busy in the data path for 100gbps workloads is not ideal, or something else?

What is referred to by the term "hardware-offload"? For NICs:

> ConnectX NICs offload and accelerate encryption/decryption at speeds up to 400Gb/s.

* https://www.nvidia.com/en-us/networking/ethernet-adapters/

There have been MACsec implementations at 800Gb/s for several years:

* https://www.rambus.com/blogs/rambus-launches-800g-macsec-mul...

* https://semiengineering.com/the-evolution-of-ethernet-to-800...

And 1.6T/3.2T as well:

* https://www.rambus.com/security/protocol-engines/macsec-ip-3...