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You can't just "wrap" SPECK in GCM-mode! In many of its configurations, it has a block too short to safely run GCM in.

Don't roll your own crypto.




By many configurations, do you mean with a block size ≠ 128 bits? I should've specified that when I posted (notwithstanding issues with rolling your own crypto)


Umm this is a bit off-topic , but I don't know how else to reach out. But I have been not able to access Star Fighters due to a certificate failure, could you please check it out or point me towards whom to contact,


The founders wound it down. Thomas is threatening to actually do a write-up about the experience sometime (poke, poke).


I really am doing it (I also really am publishing a bunch more challenges). I just had dinner with Patrick last night and talked about it a bit. I've got a lot on my plate at the moment, though.


Cool - thanks to all three of you for Starfighter. I'm sad it didn't work out as envisioned. Looking forward to the eventual write-up when it fits into your time.


We will for sure be taking another whack at this down the road, and in the meantime I'm pretty psyched to apply the same ideas again to a hiring practice I actually own (we'll surely be doing the same thing at Latacora); at least I'll get another finger-wagging blog post out of it!




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