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Recent OpenBSD should be able to do modern TLS, and probably ACME, which would have been more interesting.


The question is more about the hardware. Back then, TLS existed but was used sparingly for things like banking, because of the computational overhead, at both the server and client end. Today's computers are so much faster that we don't even think about it.


AES-GCM would be very slow on such an old computer, without hardware instructions for AES and for CLMUL.

However, this is precisely the reason why TLS also has the option to use ChaCha20-Poly1305, which will have a decent speed even on an ancient SPARC CPU, though on the most recent CPUs it cannot match the throughput of AES-GCM, which is preferred on these.

So if you want to use a SPARC with TLS 1.3, you must configure it to avoid AES-GCM and use only ChaCha20-Poly1305.


The Dolphin is on display at the Maritime Museum of San Diego.


Not much in space; There's almost no matter to convect!


What does the RF front end look like? I see the Lattice ECP5, but what are you using to go from bits to waves?


There are ten 640 MSPS ADCs (I+Q per channel and a cal path, per 4-antenna PCB tile). These are custom MASH ΣΔ designs built from discrete diff pair transistors (cost about $0.08 each) and do noise shaping/decimation to get a clean 50 MHz of baseband bandwidth. The 8x DACs are also ΣΔ, using the LVDS pins of the FPGA and some modulating DSP. Mixers are MAX2850/1, LNA are custom design based on Infineon transistor, and RFPA is a Skyworks part meant for WiFi (have iterated on a few model numbers).


Too clever by half


I've never had my ID checked boarding a domestic flight in the US. ID and sometimes boarding pass are checked at the TSA checkpoint before the gates.


Those pages both refer to the security checkpoint, not the gate agent prior to boarding. I've never had my ID checked while boarding domestically in the US.


GPS C/A signals are pretty straightforward to generate and not authenticated.


They don't. Analog low-pass filters don't do linear interpolation between samples.


Reconstruction filters in DACs are analog low-pass filters. They don't do a linear interpolation between samples.


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