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safety – How a lot entropy is misplaced alphabetising your mnemonics?


Sure I do know it is a horrible concept and never BIP39 compliant, however please assist fulfill my curiosity with this “thought experiment” and utilized maths train.

Two questions, one for 12 phrases, the opposite for twenty-four.

Assuming “completely random” entropy to begin, and sure the ultimate checksum phrase will get modified with the brand new ordering, not itself included within the alphabetical type.

Simply how a lot entropy is misplaced within the phrase’s re-sorting, in comparison with the unique random type?

I do not want the “present your work” maths, extra like virtually talking about present brute-forcing capabilities, “you’d lose 70% of your entropy, and 40% respectively”

If not too inconvenient, one thing ELI5 like, what number of supercomputer-years of effort’s distinction?

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