Isn't all crypto secure against a highly defined category, but assumed to be broken by actors outside of that category with greater intellectual assets?
Replace "intellectual assets" with "computing assets" and you're probably right. The basic idea behind current cryptography is to make the breaking/decoding without a key so expensive as to be practically impossible. Of course, "practically impossible" always refers a an assumed amount of available computing power. (Disclaimer: I'm no expert.)
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[ 3.3 ms ] story [ 13.6 ms ] threadThere's a minimum amount of energy needed to flip a bit. https://en.wikipedia.org/wiki/Landauer's_principle
By taking this value, how much energy does it take to brute-force a 256-bit AES key (average case of 2^255 key guesses plus the cost of verification)?
1.59546665 × 10^56 joules
This is about a billion times more energy than our Sun will ever produce.
https://en.wikipedia.org/wiki/Orders_of_magnitude_%28energy%...