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-rw-r--r--src/third_party/sike/isogeny.h49
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diff --git a/src/third_party/sike/isogeny.h b/src/third_party/sike/isogeny.h
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-#ifndef ISOGENY_H_
-#define ISOGENY_H_
-
-// Computes [2^e](X:Z) on Montgomery curve with projective
-// constant via e repeated doublings.
-void sike_xDBLe(
- const point_proj_t P, point_proj_t Q, const f2elm_t A24plus,
- const f2elm_t C24, size_t e);
-// Simultaneous doubling and differential addition.
-void sike_xDBLADD(
- point_proj_t P, point_proj_t Q, const f2elm_t xPQ,
- const f2elm_t A24);
-// Tripling of a Montgomery point in projective coordinates (X:Z).
-void sike_xTPL(
- const point_proj_t P, point_proj_t Q, const f2elm_t A24minus,
- const f2elm_t A24plus);
-// Computes [3^e](X:Z) on Montgomery curve with projective constant
-// via e repeated triplings.
-void sike_xTPLe(
- const point_proj_t P, point_proj_t Q, const f2elm_t A24minus,
- const f2elm_t A24plus, size_t e);
-// Given the x-coordinates of P, Q, and R, returns the value A
-// corresponding to the Montgomery curve E_A: y^2=x^3+A*x^2+x such that R=Q-P on E_A.
-void sike_get_A(
- const f2elm_t xP, const f2elm_t xQ, const f2elm_t xR, f2elm_t A);
-// Computes the j-invariant of a Montgomery curve with projective constant.
-void sike_j_inv(
- const f2elm_t A, const f2elm_t C, f2elm_t jinv);
-// Computes the corresponding 4-isogeny of a projective Montgomery
-// point (X4:Z4) of order 4.
-void sike_get_4_isog(
- const point_proj_t P, f2elm_t A24plus, f2elm_t C24, f2elm_t* coeff);
-// Computes the corresponding 3-isogeny of a projective Montgomery
-// point (X3:Z3) of order 3.
-void sike_get_3_isog(
- const point_proj_t P, f2elm_t A24minus, f2elm_t A24plus,
- f2elm_t* coeff);
-// Computes the 3-isogeny R=phi(X:Z), given projective point (X3:Z3)
-// of order 3 on a Montgomery curve and a point P with coefficients given in coeff.
-void sike_eval_3_isog(
- point_proj_t Q, f2elm_t* coeff);
-// Evaluates the isogeny at the point (X:Z) in the domain of the isogeny.
-void sike_eval_4_isog(
- point_proj_t P, f2elm_t* coeff);
-// 3-way simultaneous inversion
-void sike_inv_3_way(
- f2elm_t z1, f2elm_t z2, f2elm_t z3);
-
-#endif // ISOGENY_H_