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Verify Public Key. #18

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Verify Public Key. #18

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Commits on Dec 9, 2022

  1. Verify Public Key. 

    Add public key verification circuit that checks that a point is on the
curve and that it's in the subgroup using `(n-2)Q = 2(-Q)`. Note that
calculating `nQ` or `(n-1)Q` with double and add both fail as they
involve calculating `nQ` which can't be represented in projective
coordinates.
    @BlakeMScurr
    BlakeMScurr committed Dec 9, 2022
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