Module secp256k1 

Implementation of secp256k1 elliptic curve group operations.

Points are represented either in affine form as a (x, y) coordinate tuple satisfying y^2 = x^3 + 7, or in Jacobian weighted projective coordinate system where a tuple (x, y, z) corresponds to a tuple (x/z^2, y/z^3) in affine form.

Structs

Secp256k1

Secp256k1 - a short Weierstrass elliptic curve of the form y^2 = x^3 + 7 over the prime field of modulus 2^256 - 2^32 - 977.

Secp256k1Affine

Curve point in affine form - a tuple (x, y) that satisfies y^2 = x^3 + 7, or (0, 0) for additive identity (point at infinity).

Secp256k1EndosplitHint

Constants

N_LIMBS

Functions

coord_lambda

The value λ of the endomorphism λ (x, y) = (βx, y).

coord_zero

Padded zero.

select

Conditionally selects between two affine secp256k1 points.