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0 pointstrenchpilgrim8mo ago0 comments

It is almost free on modern CPUs that have hardware acceleration, yea

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5 comments · 2 top-level

tgsovlerkhgsel8mo ago· 2 in thread

Wireguard uses ChaCha20, which to my knowledge neither has nor requires HW acceleration to be fast.

fragmede8mo ago

> However, the software performance [of wireguard] is far below the speed of wire.

https://github.com/chili-chips-ba/wireguard-fpga

lxgr8mo ago

It's faster on CPUs without dedicated hardware than AES, but that doesn't mean that it's faster than fixed-function AES hardware.

151558mo ago· 1 in thread

Space-faring electronics aren't exactly cost-sensitive - the cost of a cluster of crypto-accelerated CPUs or rad-hardened FPGAs is peanuts compared to the human and launch costs that go into these satellites.

blackoil8mo ago

Issue is the satellite was launched 10 years ago with 20-year-old tech. So, calculations of today may not be applicable on them.

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