Github markdown doesn't use "^" for superscript, have to be explicit (#9156)

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Scott Miller 2020-06-05 16:55:33 -05:00 committed by GitHub
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@ -179,12 +179,12 @@ alphabet the input size does not leave the input guessable by brute force.
Given an alphabet of length A, an input length L is valid if:
* L >= 2,
* A^L >= 1,000,000
* and L <= 2 * floor(log<sub>A</sub>(2^96)).
* A<sup>L</sup> >= 1,000,000
* and L <= 2 * floor(log<sub>A</sub>(2<sup>96</sup>)).
As a concrete example, for handling credit card numbers, A is 10, L is 16, so
valid input lengths would be between 6 and 56 characters. This is because
10^6=1,000,000 (already greater than 2), and 2 * floor(log<sub>10</sub>(2^96)) = 56.
10<sup>6</sup>=1,000,000 (already greater than 2), and 2 * floor(log<sub>10</sub>(2<sup>96</sup>)) = 56.
Of course, in the case of credit card numbers valid input would always be 16
decimal digits.