Noble::Ed25519::Curve
ed25519 is Twisted Edwards curve with equation of
−x² + y² = 1 − (121665/121666) * x² * y²Constants
A = BigInt.new(-1)
Param: a
D = BigInt.new("37095705934669439343138083508754565189542113879843219016388785533085940283555")
Equal to -121665/121666 over finite field. Negative number is P - number, and division is invert(number, P)
Gx = BigInt.new("15112221349535400772501151409588531511454012693041857206046113283949847762202")
Base point (x, y) aka generator point
Gy = BigInt.new("46316835694926478169428394003475163141307993866256225615783033603165251855960")
H = BigInt.new(8)
Cofactor
L = CURVE_ORDER
Subgroup order: how many points ed25519 has
N = CURVE_ORDER
P = (Noble::Ed25519::Two ** BigInt256) - (BigInt.new(19))
Finite field 𝔽p over which we'll do calculations