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How secure is 256 bit security?

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Further reading 1

What does a module promise its callers? →Try replacing a module whose callers rely on its incidental return order. Start with what the interface says, then trace the decisions it hides and the behaviors people have learned to expect.This video helps answer · Does a valid signature settle which history to keep?

Caption notes

The video breaks the work of a generic search for one particular 256-bit hash target into tangible factors. Faster hardware changes the trial rate; changing the target can change the problem itself.

Video or transcript source ↗
Original passages · 2
on average, 2 to the 256 guesses
How secure is 256 bit security? · ▶ 0:33–0:37
pieces of hardware specifically designed for Bitcoin mining
How secure is 256 bit security? · ▶ 3:58–4:06

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