elliptic_curve Struct Reference

An elliptic curve. More...

#include <crypto.h>

Data Fields
const char *	name
	Curve name.
size_t	pointsize
	Point (and public key) size.
size_t	keysize
	Scalar (and private key) size.
const void *	base
	Generator base point.
const void *	order
	Order of the generator (if prime).
int(*	is_infinity )(struct elliptic_curve *curve, const void *point)
	Check if this is the point at infinity.
int(*	multiply )(struct elliptic_curve *curve, const void *base, const void *scalar, void *result)
	Multiply scalar by curve point.
int(*	add )(struct elliptic_curve *curve, const void *addend, const void *augend, void *result)
	Add curve points (as a one-off operation).
void *	priv
	Algorithm private data.

Detailed Description

An elliptic curve.

Definition at line 246 of file crypto.h.

Field Documentation

name

const char* elliptic_curve::name

Curve name.

Definition at line 248 of file crypto.h.

Referenced by weierstrass_add_raw(), weierstrass_done_raw(), weierstrass_exec(), weierstrass_init_curve(), weierstrass_init_raw(), weierstrass_is_infinity(), weierstrass_multiply(), and weierstrass_verify_raw().

pointsize

size_t elliptic_curve::pointsize

Point (and public key) size.

Definition at line 250 of file crypto.h.

Referenced by ecdsa_alloc(), ecdsa_match(), ecdsa_sign_rs(), ecdsa_verify_rs(), elliptic_add_okx(), elliptic_agree(), elliptic_curve_okx(), elliptic_multiply_okx(), and elliptic_share().

keysize

size_t elliptic_curve::keysize

Scalar (and private key) size.

Definition at line 252 of file crypto.h.

Referenced by ecdsa_alloc(), ecdsa_init_values(), ecdsa_sign_rs(), ecdsa_verify_rs(), elliptic_agree(), elliptic_curve_okx(), elliptic_multiply_okx(), and elliptic_share().

base

const void* elliptic_curve::base

Generator base point.

Definition at line 254 of file crypto.h.

Referenced by ecdsa_sign_rs(), ecdsa_verify_rs(), elliptic_curve_okx(), elliptic_multiply_okx(), and elliptic_share().

order

const void* elliptic_curve::order

Order of the generator (if prime).

Definition at line 256 of file crypto.h.

Referenced by ecdsa_init_values(), and elliptic_curve_okx().

is_infinity

int(* elliptic_curve::is_infinity) (struct elliptic_curve *curve, const void *point)

Check if this is the point at infinity.

Parameters

curve	Elliptic curve
point	Curve point

Return values

is_infinity

This is the point at infinity

The point at infinity cannot be represented in affine coordinates. Each curve must choose a representation of the point at infinity (e.g. all zeroes).

Definition at line 267 of file crypto.h.

Referenced by elliptic_is_infinity().

multiply

int(* elliptic_curve::multiply) (struct elliptic_curve *curve, const void *base, const void *scalar, void *result)

Multiply scalar by curve point.

Parameters

curve	Elliptic curve
base	Base point
scalar	Scalar multiple
result	Result point to fill in

Return values

rc	Return status code

Definition at line 277 of file crypto.h.

Referenced by elliptic_multiply().

add

int(* elliptic_curve::add) (struct elliptic_curve *curve, const void *addend, const void *augend, void *result)

Add curve points (as a one-off operation).

Parameters

curve	Elliptic curve
addend	Curve point to add
augend	Curve point to add
result	Curve point to hold result

Return values

rc	Return status code

Definition at line 287 of file crypto.h.

Referenced by elliptic_add().

priv

void* elliptic_curve::priv

Algorithm private data.

Definition at line 290 of file crypto.h.

Referenced by weierstrass_add_ladder(), weierstrass_add_once(), weierstrass_add_raw(), weierstrass_done_raw(), weierstrass_exec(), weierstrass_init_curve(), weierstrass_init_raw(), weierstrass_is_infinity(), weierstrass_multiply(), and weierstrass_verify_raw().

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The documentation for this struct was generated from the following file:

• include/ipxe/crypto.h