secp256k1: Use new field mulbyx methods.#3717
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This updates the code to make use of the new specialized MulBy2, MulBy3, MulBy4, and MulBy8 methods instead of MulInt in the curve equations. This will ultimately ensure the faster specialized methods on the 64-bit field implementation are used when it is used as the underlying field.
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This requires #3716.
This updates the code to make use of the new specialized
MulBy2,MulBy3,MulBy4, andMulBy8methods instead ofMulIntin the curve equations.This will ultimately ensure the faster specialized methods on the 64-bit field implementation are used when it is used as the underlying field.