#include "scalar.h"
#include "group.h"

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Functions
static void	secp256k1_ecmult_const (secp256k1_gej r, const secp256k1_ge a, const secp256k1_scalar *q)
	Multiply: R = q*A (in constant-time for q) More...

static int	secp256k1_ecmult_const_xonly (secp256k1_fe r, const secp256k1_fe n, const secp256k1_fe d, const secp256k1_scalar q, int known_on_curve)
	Same as secp256k1_ecmult_const, but takes in an x coordinate of the base point only, specified as fraction n/d (numerator/denominator). More...

Function Documentation

◆ secp256k1_ecmult_const()

static void secp256k1_ecmult_const	(	secp256k1_gej *	r,
		const secp256k1_ge *	a,
		const secp256k1_scalar *	q
	)

static

Multiply: R = q*A (in constant-time for q)

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static int secp256k1_ecmult_const_xonly	(	secp256k1_fe *	r,
		const secp256k1_fe *	n,
		const secp256k1_fe *	d,
		const secp256k1_scalar *	q,
		int	known_on_curve
	)

static

Same as secp256k1_ecmult_const, but takes in an x coordinate of the base point only, specified as fraction n/d (numerator/denominator).

Only the x coordinate of the result is returned.

If known_on_curve is 0, a verification is performed that n/d is a valid X coordinate, and 0 is returned if not. Otherwise, 1 is returned.

d being NULL is interpreted as d=1. If non-NULL, d must not be zero. q must not be zero.

Constant time in the value of q, but not any other inputs.

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