6 ms·
Before anyone else looks into PUFs as a mechanism for generating entropy (like the lava lamps are), they don't. It's kind of the opposite kind of randomness. L
by kennedyjavelin 6y ago
Before anyone else looks into PUFs as a mechanism for generating entropy (like the lava lamps are), they don't. It's kind of the opposite kind of randomness. Lava lamps create new randomness every time whereas a PUF generates the same randomness always.
- motohagiography 6y agoThe skepticism I have of PUFs is that since they don't generate random numbers, they may just be another open loop unfalsifiable concept in security that reduces to "it's complicated, take my word for it." The relationship to lava lamps is PUFs are a physical instead of a logical source of data, conceptually not unlike a quartz crystal in a clock, or radio active decay for random numbers, or even biometrics for authentication. You take something physically natural then sample it at a given interval to get logical data within certain parameters. The security of such a system is not in the mystery of the physical object, but the sampling scheme. Apropos of the news, just like it isn't important so much who people vote for, it's who counts the votes that matters. The security of both lava lamp RNGs and PUFs are subject to an analogous sampling dynamic. So are biometrics.