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Becoming physically immune to brute-force attacks (2021)
Using thermal physics, cosmology, and computer science to calculate password vulnerability to the biggest possible brute-force attack.
A password with 256 bits of entropy is practically immune to brute-force attacks large enough to quite literally burn the world, but is quite trivial to crack with a universe-scale fuel source. Back to reference 3 This is a massive oversimplification; there isn’t a single answer to the question “What is the volume of the observable universe?” Using this speed-of-light approach is one of multiple valid perspectives. The absolute size of the observable universe is much greater due to the way expansion works, but stuffing that into the MOAC’s furnace would require moving mass faster than the speed of light.
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