Archived Glen Greenwald: A Redaction Re-Visited: NSA Targeted The Two Leading Encryption Chips (theintercept.com)
submitted ago by go1dfish
Posted by: go1dfish
Posting time: 4.9 years ago on
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Archived on: 2/12/2017 1:51:00 AM
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57 upvotes, 3 downvotes (95% upvoted it)
Archived Glen Greenwald: A Redaction Re-Visited: NSA Targeted The Two Leading Encryption Chips (theintercept.com)
submitted ago by go1dfish
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[–] Amadameus 0 points 6 points 6 points (+6|-0) ago
With the proliferation of Arduino chips, it would be wonderful to see some tutorials on strong randomness sources we can build ourselves.
[–] Morbo 0 points 5 points 5 points (+5|-0) ago
Noisy junctions in semiconductors can be used as an entropy source for random number generation. I've seen several projects use this normally unwanted feature to generate strong randomness. I've also seen CMOS image sensors from cheap webcams used where they block all visible light from the sensor and let it fire randomly from noise, but these usually end up with some pseudo-random artifacts due to thermal gradients. The semiconductor junction method can probably overcome most of this as it is a single source rather than thousands or millions of junctions like the camera sensor. There's a RNG device based on this on Tindie that uses this noisy junction to provide an entropy pool for Linux.
Note: I'm not the seller or affiliated with the seller/Tindie
[–] ThisIsntMe123 0 points 1 point 1 point (+1|-0) ago
Isn't it pretty random to roll dice though? Maybe an arduino to roll the dice, and match those with random words from random forums? I'd say Reddit, but deleted isn't random (cheap shot?).
[–] Amadameus ago
You're not wrong, but it's more about ease of use. Rolling a die every time you wanted a strong random number would get tiresome, fast.
If I recall correctly it's a few thousand random numbers needed to generate an RSA key...?