chromium/third_party/boringssl/src/crypto/fipsmodule/ec/scalar.c.inc

/* Copyright (c) 2018, Google Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */

#include <openssl/ec.h>
#include <openssl/err.h>
#include <openssl/mem.h>

#include "internal.h"
#include "../bn/internal.h"
#include "../../internal.h"


int ec_bignum_to_scalar(const EC_GROUP *group, EC_SCALAR *out,
                        const BIGNUM *in) { … }

int ec_scalar_equal_vartime(const EC_GROUP *group, const EC_SCALAR *a,
                            const EC_SCALAR *b) { … }

int ec_scalar_is_zero(const EC_GROUP *group, const EC_SCALAR *a) { … }

int ec_random_nonzero_scalar(const EC_GROUP *group, EC_SCALAR *out,
                             const uint8_t additional_data[32]) { … }

void ec_scalar_to_bytes(const EC_GROUP *group, uint8_t *out, size_t *out_len,
                        const EC_SCALAR *in) { … }

int ec_scalar_from_bytes(const EC_GROUP *group, EC_SCALAR *out,
                         const uint8_t *in, size_t len) { … }

void ec_scalar_reduce(const EC_GROUP *group, EC_SCALAR *out,
                      const BN_ULONG *words, size_t num) { … }

void ec_scalar_add(const EC_GROUP *group, EC_SCALAR *r, const EC_SCALAR *a,
                   const EC_SCALAR *b) { … }

void ec_scalar_sub(const EC_GROUP *group, EC_SCALAR *r, const EC_SCALAR *a,
                   const EC_SCALAR *b) { … }

void ec_scalar_neg(const EC_GROUP *group, EC_SCALAR *r, const EC_SCALAR *a) { … }

void ec_scalar_select(const EC_GROUP *group, EC_SCALAR *out, BN_ULONG mask,
                      const EC_SCALAR *a, const EC_SCALAR *b) { … }

void ec_scalar_to_montgomery(const EC_GROUP *group, EC_SCALAR *r,
                             const EC_SCALAR *a) { … }

void ec_scalar_from_montgomery(const EC_GROUP *group, EC_SCALAR *r,
                               const EC_SCALAR *a) { … }

void ec_scalar_mul_montgomery(const EC_GROUP *group, EC_SCALAR *r,
                              const EC_SCALAR *a, const EC_SCALAR *b) { … }

void ec_simple_scalar_inv0_montgomery(const EC_GROUP *group, EC_SCALAR *r,
                                      const EC_SCALAR *a) { … }

int ec_simple_scalar_to_montgomery_inv_vartime(const EC_GROUP *group,
                                               EC_SCALAR *r,
                                               const EC_SCALAR *a) { … }

void ec_scalar_inv0_montgomery(const EC_GROUP *group, EC_SCALAR *r,
                               const EC_SCALAR *a) { … }

int ec_scalar_to_montgomery_inv_vartime(const EC_GROUP *group, EC_SCALAR *r,
                                        const EC_SCALAR *a) { … }