TIL the second law of thermodynamics says enumerating all the possible 256-bit encryption keys (even without attempting them) would require at minimum all of the energy of 137 billion supernovas.
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Replying to @pwnallthethings
Until we introduce someone named Moore to the equation...
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Replying to @skyrien
This is the hard physics lower-bound of energy needed.
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Replying to @pwnallthethings @skyrien
It won't hold up much longer, 256 will be obsolete within 5-10 years.https://www.reddit.com/r/Bitcoin/comments/24zwsr/how_many_qubits_would_it_take_to_break_bitcoins/ …
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Bold move to bet on the second law of thermodynamics become obsolete.
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Replying to @pwnallthethings @skyrien
Betting quantum computers get around the limitations of transistor based computers ;) Fun fact though, thermodynamics says energy can't be destroyed but every time a photon redshifts because of the expansion of the universe, a bit of its energy is destroyed.
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The number isn't based on transistors. It's based on the information theoretic energy lower-bound for a particle to irreversibly change information states.
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Replying to @pwnallthethings @skyrien
With ~1300 qubits the quantum system can be in a superposition of ALL possible states in the 256 bit key and resolve to the correct private key. I think the out for us is the word "enumerate", quantum systems don't enumerate they are basically everything and then the answer.
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That's not how any of this works...
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