diff options
Diffstat (limited to 'thirdparty/openssl/crypto/ec/ec_lib.c')
| -rw-r--r-- | thirdparty/openssl/crypto/ec/ec_lib.c | 1134 |
1 files changed, 0 insertions, 1134 deletions
diff --git a/thirdparty/openssl/crypto/ec/ec_lib.c b/thirdparty/openssl/crypto/ec/ec_lib.c deleted file mode 100644 index 3ffa112cc3..0000000000 --- a/thirdparty/openssl/crypto/ec/ec_lib.c +++ /dev/null @@ -1,1134 +0,0 @@ -/* crypto/ec/ec_lib.c */ -/* - * Originally written by Bodo Moeller for the OpenSSL project. - */ -/* ==================================================================== - * Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * 3. All advertising materials mentioning features or use of this - * software must display the following acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" - * - * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * openssl-core@openssl.org. - * - * 5. Products derived from this software may not be called "OpenSSL" - * nor may "OpenSSL" appear in their names without prior written - * permission of the OpenSSL Project. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit (http://www.openssl.org/)" - * - * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY - * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * ==================================================================== - * - * This product includes cryptographic software written by Eric Young - * (eay@cryptsoft.com). This product includes software written by Tim - * Hudson (tjh@cryptsoft.com). - * - */ -/* ==================================================================== - * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. - * Binary polynomial ECC support in OpenSSL originally developed by - * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project. - */ - -#include <string.h> - -#include <openssl/err.h> -#include <openssl/opensslv.h> - -#include "ec_lcl.h" - -const char EC_version[] = "EC" OPENSSL_VERSION_PTEXT; - -/* functions for EC_GROUP objects */ - -EC_GROUP *EC_GROUP_new(const EC_METHOD *meth) -{ - EC_GROUP *ret; - - if (meth == NULL) { - ECerr(EC_F_EC_GROUP_NEW, EC_R_SLOT_FULL); - return NULL; - } - if (meth->group_init == 0) { - ECerr(EC_F_EC_GROUP_NEW, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return NULL; - } - - ret = OPENSSL_malloc(sizeof *ret); - if (ret == NULL) { - ECerr(EC_F_EC_GROUP_NEW, ERR_R_MALLOC_FAILURE); - return NULL; - } - - ret->meth = meth; - - ret->extra_data = NULL; - ret->mont_data = NULL; - - ret->generator = NULL; - BN_init(&ret->order); - BN_init(&ret->cofactor); - - ret->curve_name = 0; - ret->asn1_flag = ~EC_GROUP_ASN1_FLAG_MASK; - ret->asn1_form = POINT_CONVERSION_UNCOMPRESSED; - - ret->seed = NULL; - ret->seed_len = 0; - - if (!meth->group_init(ret)) { - OPENSSL_free(ret); - return NULL; - } - - return ret; -} - -void EC_GROUP_free(EC_GROUP *group) -{ - if (!group) - return; - - if (group->meth->group_finish != 0) - group->meth->group_finish(group); - - EC_EX_DATA_free_all_data(&group->extra_data); - - if (EC_GROUP_VERSION(group) && group->mont_data) - BN_MONT_CTX_free(group->mont_data); - - if (group->generator != NULL) - EC_POINT_free(group->generator); - BN_free(&group->order); - BN_free(&group->cofactor); - - if (group->seed) - OPENSSL_free(group->seed); - - OPENSSL_free(group); -} - -void EC_GROUP_clear_free(EC_GROUP *group) -{ - if (!group) - return; - - if (group->meth->group_clear_finish != 0) - group->meth->group_clear_finish(group); - else if (group->meth->group_finish != 0) - group->meth->group_finish(group); - - EC_EX_DATA_clear_free_all_data(&group->extra_data); - - if (EC_GROUP_VERSION(group) && group->mont_data) - BN_MONT_CTX_free(group->mont_data); - - if (group->generator != NULL) - EC_POINT_clear_free(group->generator); - BN_clear_free(&group->order); - BN_clear_free(&group->cofactor); - - if (group->seed) { - OPENSSL_cleanse(group->seed, group->seed_len); - OPENSSL_free(group->seed); - } - - OPENSSL_cleanse(group, sizeof *group); - OPENSSL_free(group); -} - -int EC_GROUP_copy(EC_GROUP *dest, const EC_GROUP *src) -{ - EC_EXTRA_DATA *d; - - if (dest->meth->group_copy == 0) { - ECerr(EC_F_EC_GROUP_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - if (dest->meth != src->meth) { - ECerr(EC_F_EC_GROUP_COPY, EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - if (dest == src) - return 1; - - EC_EX_DATA_free_all_data(&dest->extra_data); - - for (d = src->extra_data; d != NULL; d = d->next) { - void *t = d->dup_func(d->data); - - if (t == NULL) - return 0; - if (!EC_EX_DATA_set_data - (&dest->extra_data, t, d->dup_func, d->free_func, - d->clear_free_func)) - return 0; - } - - if (EC_GROUP_VERSION(src) && src->mont_data != NULL) { - if (dest->mont_data == NULL) { - dest->mont_data = BN_MONT_CTX_new(); - if (dest->mont_data == NULL) - return 0; - } - if (!BN_MONT_CTX_copy(dest->mont_data, src->mont_data)) - return 0; - } else { - /* src->generator == NULL */ - if (EC_GROUP_VERSION(dest) && dest->mont_data != NULL) { - BN_MONT_CTX_free(dest->mont_data); - dest->mont_data = NULL; - } - } - - if (src->generator != NULL) { - if (dest->generator == NULL) { - dest->generator = EC_POINT_new(dest); - if (dest->generator == NULL) - return 0; - } - if (!EC_POINT_copy(dest->generator, src->generator)) - return 0; - } else { - /* src->generator == NULL */ - if (dest->generator != NULL) { - EC_POINT_clear_free(dest->generator); - dest->generator = NULL; - } - } - - if (!BN_copy(&dest->order, &src->order)) - return 0; - if (!BN_copy(&dest->cofactor, &src->cofactor)) - return 0; - - dest->curve_name = src->curve_name; - dest->asn1_flag = src->asn1_flag; - dest->asn1_form = src->asn1_form; - - if (src->seed) { - if (dest->seed) - OPENSSL_free(dest->seed); - dest->seed = OPENSSL_malloc(src->seed_len); - if (dest->seed == NULL) - return 0; - if (!memcpy(dest->seed, src->seed, src->seed_len)) - return 0; - dest->seed_len = src->seed_len; - } else { - if (dest->seed) - OPENSSL_free(dest->seed); - dest->seed = NULL; - dest->seed_len = 0; - } - - return dest->meth->group_copy(dest, src); -} - -EC_GROUP *EC_GROUP_dup(const EC_GROUP *a) -{ - EC_GROUP *t = NULL; - int ok = 0; - - if (a == NULL) - return NULL; - - if ((t = EC_GROUP_new(a->meth)) == NULL) - return (NULL); - if (!EC_GROUP_copy(t, a)) - goto err; - - ok = 1; - - err: - if (!ok) { - if (t) - EC_GROUP_free(t); - return NULL; - } else - return t; -} - -const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group) -{ - return group->meth; -} - -int EC_METHOD_get_field_type(const EC_METHOD *meth) -{ - return meth->field_type; -} - -int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator, - const BIGNUM *order, const BIGNUM *cofactor) -{ - if (generator == NULL) { - ECerr(EC_F_EC_GROUP_SET_GENERATOR, ERR_R_PASSED_NULL_PARAMETER); - return 0; - } - - if (group->generator == NULL) { - group->generator = EC_POINT_new(group); - if (group->generator == NULL) - return 0; - } - if (!EC_POINT_copy(group->generator, generator)) - return 0; - - if (order != NULL) { - if (!BN_copy(&group->order, order)) - return 0; - } else - BN_zero(&group->order); - - if (cofactor != NULL) { - if (!BN_copy(&group->cofactor, cofactor)) - return 0; - } else - BN_zero(&group->cofactor); - - /* - * We ignore the return value because some groups have an order with - * factors of two, which makes the Montgomery setup fail. - * |group->mont_data| will be NULL in this case. - */ - ec_precompute_mont_data(group); - - return 1; -} - -const EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group) -{ - return group->generator; -} - -BN_MONT_CTX *EC_GROUP_get_mont_data(const EC_GROUP *group) -{ - return EC_GROUP_VERSION(group) ? group->mont_data : NULL; -} - -int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx) -{ - if (!BN_copy(order, &group->order)) - return 0; - - return !BN_is_zero(order); -} - -int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor, - BN_CTX *ctx) -{ - if (!BN_copy(cofactor, &group->cofactor)) - return 0; - - return !BN_is_zero(&group->cofactor); -} - -void EC_GROUP_set_curve_name(EC_GROUP *group, int nid) -{ - group->curve_name = nid; -} - -int EC_GROUP_get_curve_name(const EC_GROUP *group) -{ - return group->curve_name; -} - -void EC_GROUP_set_asn1_flag(EC_GROUP *group, int flag) -{ - group->asn1_flag &= ~EC_GROUP_ASN1_FLAG_MASK; - group->asn1_flag |= flag & EC_GROUP_ASN1_FLAG_MASK; -} - -int EC_GROUP_get_asn1_flag(const EC_GROUP *group) -{ - return group->asn1_flag & EC_GROUP_ASN1_FLAG_MASK; -} - -void EC_GROUP_set_point_conversion_form(EC_GROUP *group, - point_conversion_form_t form) -{ - group->asn1_form = form; -} - -point_conversion_form_t EC_GROUP_get_point_conversion_form(const EC_GROUP - *group) -{ - return group->asn1_form; -} - -size_t EC_GROUP_set_seed(EC_GROUP *group, const unsigned char *p, size_t len) -{ - if (group->seed) { - OPENSSL_free(group->seed); - group->seed = NULL; - group->seed_len = 0; - } - - if (!len || !p) - return 1; - - if ((group->seed = OPENSSL_malloc(len)) == NULL) - return 0; - memcpy(group->seed, p, len); - group->seed_len = len; - - return len; -} - -unsigned char *EC_GROUP_get0_seed(const EC_GROUP *group) -{ - return group->seed; -} - -size_t EC_GROUP_get_seed_len(const EC_GROUP *group) -{ - return group->seed_len; -} - -int EC_GROUP_set_curve_GFp(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, - const BIGNUM *b, BN_CTX *ctx) -{ - if (group->meth->group_set_curve == 0) { - ECerr(EC_F_EC_GROUP_SET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - return group->meth->group_set_curve(group, p, a, b, ctx); -} - -int EC_GROUP_get_curve_GFp(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, - BIGNUM *b, BN_CTX *ctx) -{ - if (group->meth->group_get_curve == 0) { - ECerr(EC_F_EC_GROUP_GET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - return group->meth->group_get_curve(group, p, a, b, ctx); -} - -#ifndef OPENSSL_NO_EC2M -int EC_GROUP_set_curve_GF2m(EC_GROUP *group, const BIGNUM *p, const BIGNUM *a, - const BIGNUM *b, BN_CTX *ctx) -{ - if (group->meth->group_set_curve == 0) { - ECerr(EC_F_EC_GROUP_SET_CURVE_GF2M, - ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - return group->meth->group_set_curve(group, p, a, b, ctx); -} - -int EC_GROUP_get_curve_GF2m(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, - BIGNUM *b, BN_CTX *ctx) -{ - if (group->meth->group_get_curve == 0) { - ECerr(EC_F_EC_GROUP_GET_CURVE_GF2M, - ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - return group->meth->group_get_curve(group, p, a, b, ctx); -} -#endif - -int EC_GROUP_get_degree(const EC_GROUP *group) -{ - if (group->meth->group_get_degree == 0) { - ECerr(EC_F_EC_GROUP_GET_DEGREE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - return group->meth->group_get_degree(group); -} - -int EC_GROUP_check_discriminant(const EC_GROUP *group, BN_CTX *ctx) -{ - if (group->meth->group_check_discriminant == 0) { - ECerr(EC_F_EC_GROUP_CHECK_DISCRIMINANT, - ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - return group->meth->group_check_discriminant(group, ctx); -} - -int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ctx) -{ - int r = 0; - BIGNUM *a1, *a2, *a3, *b1, *b2, *b3; - BN_CTX *ctx_new = NULL; - - /* compare the field types */ - if (EC_METHOD_get_field_type(EC_GROUP_method_of(a)) != - EC_METHOD_get_field_type(EC_GROUP_method_of(b))) - return 1; - /* compare the curve name (if present in both) */ - if (EC_GROUP_get_curve_name(a) && EC_GROUP_get_curve_name(b) && - EC_GROUP_get_curve_name(a) != EC_GROUP_get_curve_name(b)) - return 1; - - if (!ctx) - ctx_new = ctx = BN_CTX_new(); - if (!ctx) - return -1; - - BN_CTX_start(ctx); - a1 = BN_CTX_get(ctx); - a2 = BN_CTX_get(ctx); - a3 = BN_CTX_get(ctx); - b1 = BN_CTX_get(ctx); - b2 = BN_CTX_get(ctx); - b3 = BN_CTX_get(ctx); - if (!b3) { - BN_CTX_end(ctx); - if (ctx_new) - BN_CTX_free(ctx); - return -1; - } - - /* - * XXX This approach assumes that the external representation of curves - * over the same field type is the same. - */ - if (!a->meth->group_get_curve(a, a1, a2, a3, ctx) || - !b->meth->group_get_curve(b, b1, b2, b3, ctx)) - r = 1; - - if (r || BN_cmp(a1, b1) || BN_cmp(a2, b2) || BN_cmp(a3, b3)) - r = 1; - - /* XXX EC_POINT_cmp() assumes that the methods are equal */ - if (r || EC_POINT_cmp(a, EC_GROUP_get0_generator(a), - EC_GROUP_get0_generator(b), ctx)) - r = 1; - - if (!r) { - /* compare the order and cofactor */ - if (!EC_GROUP_get_order(a, a1, ctx) || - !EC_GROUP_get_order(b, b1, ctx) || - !EC_GROUP_get_cofactor(a, a2, ctx) || - !EC_GROUP_get_cofactor(b, b2, ctx)) { - BN_CTX_end(ctx); - if (ctx_new) - BN_CTX_free(ctx); - return -1; - } - if (BN_cmp(a1, b1) || BN_cmp(a2, b2)) - r = 1; - } - - BN_CTX_end(ctx); - if (ctx_new) - BN_CTX_free(ctx); - - return r; -} - -/* this has 'package' visibility */ -int EC_EX_DATA_set_data(EC_EXTRA_DATA **ex_data, void *data, - void *(*dup_func) (void *), - void (*free_func) (void *), - void (*clear_free_func) (void *)) -{ - EC_EXTRA_DATA *d; - - if (ex_data == NULL) - return 0; - - for (d = *ex_data; d != NULL; d = d->next) { - if (d->dup_func == dup_func && d->free_func == free_func - && d->clear_free_func == clear_free_func) { - ECerr(EC_F_EC_EX_DATA_SET_DATA, EC_R_SLOT_FULL); - return 0; - } - } - - if (data == NULL) - /* no explicit entry needed */ - return 1; - - d = OPENSSL_malloc(sizeof *d); - if (d == NULL) - return 0; - - d->data = data; - d->dup_func = dup_func; - d->free_func = free_func; - d->clear_free_func = clear_free_func; - - d->next = *ex_data; - *ex_data = d; - - return 1; -} - -/* this has 'package' visibility */ -void *EC_EX_DATA_get_data(const EC_EXTRA_DATA *ex_data, - void *(*dup_func) (void *), - void (*free_func) (void *), - void (*clear_free_func) (void *)) -{ - const EC_EXTRA_DATA *d; - - for (d = ex_data; d != NULL; d = d->next) { - if (d->dup_func == dup_func && d->free_func == free_func - && d->clear_free_func == clear_free_func) - return d->data; - } - - return NULL; -} - -/* this has 'package' visibility */ -void EC_EX_DATA_free_data(EC_EXTRA_DATA **ex_data, - void *(*dup_func) (void *), - void (*free_func) (void *), - void (*clear_free_func) (void *)) -{ - EC_EXTRA_DATA **p; - - if (ex_data == NULL) - return; - - for (p = ex_data; *p != NULL; p = &((*p)->next)) { - if ((*p)->dup_func == dup_func && (*p)->free_func == free_func - && (*p)->clear_free_func == clear_free_func) { - EC_EXTRA_DATA *next = (*p)->next; - - (*p)->free_func((*p)->data); - OPENSSL_free(*p); - - *p = next; - return; - } - } -} - -/* this has 'package' visibility */ -void EC_EX_DATA_clear_free_data(EC_EXTRA_DATA **ex_data, - void *(*dup_func) (void *), - void (*free_func) (void *), - void (*clear_free_func) (void *)) -{ - EC_EXTRA_DATA **p; - - if (ex_data == NULL) - return; - - for (p = ex_data; *p != NULL; p = &((*p)->next)) { - if ((*p)->dup_func == dup_func && (*p)->free_func == free_func - && (*p)->clear_free_func == clear_free_func) { - EC_EXTRA_DATA *next = (*p)->next; - - (*p)->clear_free_func((*p)->data); - OPENSSL_free(*p); - - *p = next; - return; - } - } -} - -/* this has 'package' visibility */ -void EC_EX_DATA_free_all_data(EC_EXTRA_DATA **ex_data) -{ - EC_EXTRA_DATA *d; - - if (ex_data == NULL) - return; - - d = *ex_data; - while (d) { - EC_EXTRA_DATA *next = d->next; - - d->free_func(d->data); - OPENSSL_free(d); - - d = next; - } - *ex_data = NULL; -} - -/* this has 'package' visibility */ -void EC_EX_DATA_clear_free_all_data(EC_EXTRA_DATA **ex_data) -{ - EC_EXTRA_DATA *d; - - if (ex_data == NULL) - return; - - d = *ex_data; - while (d) { - EC_EXTRA_DATA *next = d->next; - - d->clear_free_func(d->data); - OPENSSL_free(d); - - d = next; - } - *ex_data = NULL; -} - -/* functions for EC_POINT objects */ - -EC_POINT *EC_POINT_new(const EC_GROUP *group) -{ - EC_POINT *ret; - - if (group == NULL) { - ECerr(EC_F_EC_POINT_NEW, ERR_R_PASSED_NULL_PARAMETER); - return NULL; - } - if (group->meth->point_init == 0) { - ECerr(EC_F_EC_POINT_NEW, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return NULL; - } - - ret = OPENSSL_malloc(sizeof *ret); - if (ret == NULL) { - ECerr(EC_F_EC_POINT_NEW, ERR_R_MALLOC_FAILURE); - return NULL; - } - - ret->meth = group->meth; - - if (!ret->meth->point_init(ret)) { - OPENSSL_free(ret); - return NULL; - } - - return ret; -} - -void EC_POINT_free(EC_POINT *point) -{ - if (!point) - return; - - if (point->meth->point_finish != 0) - point->meth->point_finish(point); - OPENSSL_free(point); -} - -void EC_POINT_clear_free(EC_POINT *point) -{ - if (!point) - return; - - if (point->meth->point_clear_finish != 0) - point->meth->point_clear_finish(point); - else if (point->meth->point_finish != 0) - point->meth->point_finish(point); - OPENSSL_cleanse(point, sizeof *point); - OPENSSL_free(point); -} - -int EC_POINT_copy(EC_POINT *dest, const EC_POINT *src) -{ - if (dest->meth->point_copy == 0) { - ECerr(EC_F_EC_POINT_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - if (dest->meth != src->meth) { - ECerr(EC_F_EC_POINT_COPY, EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - if (dest == src) - return 1; - return dest->meth->point_copy(dest, src); -} - -EC_POINT *EC_POINT_dup(const EC_POINT *a, const EC_GROUP *group) -{ - EC_POINT *t; - int r; - - if (a == NULL) - return NULL; - - t = EC_POINT_new(group); - if (t == NULL) - return (NULL); - r = EC_POINT_copy(t, a); - if (!r) { - EC_POINT_free(t); - return NULL; - } else - return t; -} - -const EC_METHOD *EC_POINT_method_of(const EC_POINT *point) -{ - return point->meth; -} - -int EC_POINT_set_to_infinity(const EC_GROUP *group, EC_POINT *point) -{ - if (group->meth->point_set_to_infinity == 0) { - ECerr(EC_F_EC_POINT_SET_TO_INFINITY, - ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - if (group->meth != point->meth) { - ECerr(EC_F_EC_POINT_SET_TO_INFINITY, EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - return group->meth->point_set_to_infinity(group, point); -} - -int EC_POINT_set_Jprojective_coordinates_GFp(const EC_GROUP *group, - EC_POINT *point, const BIGNUM *x, - const BIGNUM *y, const BIGNUM *z, - BN_CTX *ctx) -{ - if (group->meth->point_set_Jprojective_coordinates_GFp == 0) { - ECerr(EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP, - ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - if (group->meth != point->meth) { - ECerr(EC_F_EC_POINT_SET_JPROJECTIVE_COORDINATES_GFP, - EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - return group->meth->point_set_Jprojective_coordinates_GFp(group, point, x, - y, z, ctx); -} - -int EC_POINT_get_Jprojective_coordinates_GFp(const EC_GROUP *group, - const EC_POINT *point, BIGNUM *x, - BIGNUM *y, BIGNUM *z, - BN_CTX *ctx) -{ - if (group->meth->point_get_Jprojective_coordinates_GFp == 0) { - ECerr(EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP, - ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - if (group->meth != point->meth) { - ECerr(EC_F_EC_POINT_GET_JPROJECTIVE_COORDINATES_GFP, - EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - return group->meth->point_get_Jprojective_coordinates_GFp(group, point, x, - y, z, ctx); -} - -int EC_POINT_set_affine_coordinates_GFp(const EC_GROUP *group, - EC_POINT *point, const BIGNUM *x, - const BIGNUM *y, BN_CTX *ctx) -{ - if (group->meth->point_set_affine_coordinates == 0) { - ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP, - ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - if (group->meth != point->meth) { - ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GFP, - EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - return group->meth->point_set_affine_coordinates(group, point, x, y, ctx); -} - -#ifndef OPENSSL_NO_EC2M -int EC_POINT_set_affine_coordinates_GF2m(const EC_GROUP *group, - EC_POINT *point, const BIGNUM *x, - const BIGNUM *y, BN_CTX *ctx) -{ - if (group->meth->point_set_affine_coordinates == 0) { - ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GF2M, - ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - if (group->meth != point->meth) { - ECerr(EC_F_EC_POINT_SET_AFFINE_COORDINATES_GF2M, - EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - return group->meth->point_set_affine_coordinates(group, point, x, y, ctx); -} -#endif - -int EC_POINT_get_affine_coordinates_GFp(const EC_GROUP *group, - const EC_POINT *point, BIGNUM *x, - BIGNUM *y, BN_CTX *ctx) -{ - if (group->meth->point_get_affine_coordinates == 0) { - ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP, - ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - if (group->meth != point->meth) { - ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GFP, - EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - return group->meth->point_get_affine_coordinates(group, point, x, y, ctx); -} - -#ifndef OPENSSL_NO_EC2M -int EC_POINT_get_affine_coordinates_GF2m(const EC_GROUP *group, - const EC_POINT *point, BIGNUM *x, - BIGNUM *y, BN_CTX *ctx) -{ - if (group->meth->point_get_affine_coordinates == 0) { - ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GF2M, - ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - if (group->meth != point->meth) { - ECerr(EC_F_EC_POINT_GET_AFFINE_COORDINATES_GF2M, - EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - return group->meth->point_get_affine_coordinates(group, point, x, y, ctx); -} -#endif - -int EC_POINT_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, - const EC_POINT *b, BN_CTX *ctx) -{ - if (group->meth->add == 0) { - ECerr(EC_F_EC_POINT_ADD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - if ((group->meth != r->meth) || (r->meth != a->meth) - || (a->meth != b->meth)) { - ECerr(EC_F_EC_POINT_ADD, EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - return group->meth->add(group, r, a, b, ctx); -} - -int EC_POINT_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, - BN_CTX *ctx) -{ - if (group->meth->dbl == 0) { - ECerr(EC_F_EC_POINT_DBL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - if ((group->meth != r->meth) || (r->meth != a->meth)) { - ECerr(EC_F_EC_POINT_DBL, EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - return group->meth->dbl(group, r, a, ctx); -} - -int EC_POINT_invert(const EC_GROUP *group, EC_POINT *a, BN_CTX *ctx) -{ - if (group->meth->invert == 0) { - ECerr(EC_F_EC_POINT_INVERT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - if (group->meth != a->meth) { - ECerr(EC_F_EC_POINT_INVERT, EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - return group->meth->invert(group, a, ctx); -} - -int EC_POINT_is_at_infinity(const EC_GROUP *group, const EC_POINT *point) -{ - if (group->meth->is_at_infinity == 0) { - ECerr(EC_F_EC_POINT_IS_AT_INFINITY, - ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - if (group->meth != point->meth) { - ECerr(EC_F_EC_POINT_IS_AT_INFINITY, EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - return group->meth->is_at_infinity(group, point); -} - -/* - * Check whether an EC_POINT is on the curve or not. Note that the return - * value for this function should NOT be treated as a boolean. Return values: - * 1: The point is on the curve - * 0: The point is not on the curve - * -1: An error occurred - */ -int EC_POINT_is_on_curve(const EC_GROUP *group, const EC_POINT *point, - BN_CTX *ctx) -{ - if (group->meth->is_on_curve == 0) { - ECerr(EC_F_EC_POINT_IS_ON_CURVE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - if (group->meth != point->meth) { - ECerr(EC_F_EC_POINT_IS_ON_CURVE, EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - return group->meth->is_on_curve(group, point, ctx); -} - -int EC_POINT_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b, - BN_CTX *ctx) -{ - if (group->meth->point_cmp == 0) { - ECerr(EC_F_EC_POINT_CMP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return -1; - } - if ((group->meth != a->meth) || (a->meth != b->meth)) { - ECerr(EC_F_EC_POINT_CMP, EC_R_INCOMPATIBLE_OBJECTS); - return -1; - } - return group->meth->point_cmp(group, a, b, ctx); -} - -int EC_POINT_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx) -{ - if (group->meth->make_affine == 0) { - ECerr(EC_F_EC_POINT_MAKE_AFFINE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - if (group->meth != point->meth) { - ECerr(EC_F_EC_POINT_MAKE_AFFINE, EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - return group->meth->make_affine(group, point, ctx); -} - -int EC_POINTs_make_affine(const EC_GROUP *group, size_t num, - EC_POINT *points[], BN_CTX *ctx) -{ - size_t i; - - if (group->meth->points_make_affine == 0) { - ECerr(EC_F_EC_POINTS_MAKE_AFFINE, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); - return 0; - } - for (i = 0; i < num; i++) { - if (group->meth != points[i]->meth) { - ECerr(EC_F_EC_POINTS_MAKE_AFFINE, EC_R_INCOMPATIBLE_OBJECTS); - return 0; - } - } - return group->meth->points_make_affine(group, num, points, ctx); -} - -/* - * Functions for point multiplication. If group->meth->mul is 0, we use the - * wNAF-based implementations in ec_mult.c; otherwise we dispatch through - * methods. - */ - -int EC_POINTs_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *scalar, - size_t num, const EC_POINT *points[], - const BIGNUM *scalars[], BN_CTX *ctx) -{ - if (group->meth->mul == 0) - /* use default */ - return ec_wNAF_mul(group, r, scalar, num, points, scalars, ctx); - - return group->meth->mul(group, r, scalar, num, points, scalars, ctx); -} - -int EC_POINT_mul(const EC_GROUP *group, EC_POINT *r, const BIGNUM *g_scalar, - const EC_POINT *point, const BIGNUM *p_scalar, BN_CTX *ctx) -{ - /* just a convenient interface to EC_POINTs_mul() */ - - const EC_POINT *points[1]; - const BIGNUM *scalars[1]; - - points[0] = point; - scalars[0] = p_scalar; - - return EC_POINTs_mul(group, r, g_scalar, - (point != NULL - && p_scalar != NULL), points, scalars, ctx); -} - -int EC_GROUP_precompute_mult(EC_GROUP *group, BN_CTX *ctx) -{ - if (group->meth->mul == 0) - /* use default */ - return ec_wNAF_precompute_mult(group, ctx); - - if (group->meth->precompute_mult != 0) - return group->meth->precompute_mult(group, ctx); - else - return 1; /* nothing to do, so report success */ -} - -int EC_GROUP_have_precompute_mult(const EC_GROUP *group) -{ - if (group->meth->mul == 0) - /* use default */ - return ec_wNAF_have_precompute_mult(group); - - if (group->meth->have_precompute_mult != 0) - return group->meth->have_precompute_mult(group); - else - return 0; /* cannot tell whether precomputation has - * been performed */ -} - -/* - * ec_precompute_mont_data sets |group->mont_data| from |group->order| and - * returns one on success. On error it returns zero. - */ -int ec_precompute_mont_data(EC_GROUP *group) -{ - BN_CTX *ctx = BN_CTX_new(); - int ret = 0; - - if (!EC_GROUP_VERSION(group)) - goto err; - - if (group->mont_data) { - BN_MONT_CTX_free(group->mont_data); - group->mont_data = NULL; - } - - if (ctx == NULL) - goto err; - - group->mont_data = BN_MONT_CTX_new(); - if (!group->mont_data) - goto err; - - if (!BN_MONT_CTX_set(group->mont_data, &group->order, ctx)) { - BN_MONT_CTX_free(group->mont_data); - group->mont_data = NULL; - goto err; - } - - ret = 1; - - err: - - if (ctx) - BN_CTX_free(ctx); - return ret; -} |