From 027351f729b9e837200dae6e1520cda6577ab930 Mon Sep 17 00:00:00 2001 From: cvs2svn Date: Wed, 15 May 2002 02:29:24 +0000 Subject: This commit was manufactured by cvs2git to create branch 'unlabeled-1.1.1'. --- src/lib/libcrypto/ec/ec_lib.c | 646 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 646 insertions(+) create mode 100644 src/lib/libcrypto/ec/ec_lib.c (limited to 'src/lib/libcrypto/ec/ec_lib.c') diff --git a/src/lib/libcrypto/ec/ec_lib.c b/src/lib/libcrypto/ec/ec_lib.c new file mode 100644 index 0000000000..e0d78d67fb --- /dev/null +++ b/src/lib/libcrypto/ec/ec_lib.c @@ -0,0 +1,646 @@ +/* crypto/ec/ec_lib.c */ +/* ==================================================================== + * Copyright (c) 1998-2001 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). + * + */ + +#include + +#include +#include + +#include "ec_lcl.h" + +static 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, ERR_R_PASSED_NULL_PARAMETER); + 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->extra_data_dup_func = 0; + ret->extra_data_free_func = 0; + ret->extra_data_clear_free_func = 0; + + if (!meth->group_init(ret)) + { + OPENSSL_free(ret); + return NULL; + } + + return ret; + } + + +void EC_GROUP_free(EC_GROUP *group) + { + if (group->meth->group_finish != 0) + group->meth->group_finish(group); + + EC_GROUP_free_extra_data(group); + + OPENSSL_free(group); + } + + +void EC_GROUP_clear_free(EC_GROUP *group) + { + if (group->meth->group_clear_finish != 0) + group->meth->group_clear_finish(group); + else if (group->meth != NULL && group->meth->group_finish != 0) + group->meth->group_finish(group); + + EC_GROUP_clear_free_extra_data(group); + + memset(group, 0, sizeof *group); + OPENSSL_free(group); + } + + +int EC_GROUP_copy(EC_GROUP *dest, const EC_GROUP *src) + { + 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_GROUP_clear_free_extra_data(dest); + if (src->extra_data_dup_func) + { + if (src->extra_data != NULL) + { + dest->extra_data = src->extra_data_dup_func(src->extra_data); + if (dest->extra_data == NULL) + return 0; + } + + dest->extra_data_dup_func = src->extra_data_dup_func; + dest->extra_data_free_func = src->extra_data_free_func; + dest->extra_data_clear_free_func = src->extra_data_clear_free_func; + } + + return dest->meth->group_copy(dest, src); + } + + +const EC_METHOD *EC_GROUP_method_of(const EC_GROUP *group) + { + return group->meth; + } + + +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_GFp == 0) + { + ECerr(EC_F_EC_GROUP_SET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + return group->meth->group_set_curve_GFp(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_GFp == 0) + { + ECerr(EC_F_EC_GROUP_GET_CURVE_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + return group->meth->group_get_curve_GFp(group, p, a, b, ctx); + } + + +int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator, const BIGNUM *order, const BIGNUM *cofactor) + { + if (group->meth->group_set_generator == 0) + { + ECerr(EC_F_EC_GROUP_SET_GENERATOR, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + return group->meth->group_set_generator(group, generator, order, cofactor); + } + + +EC_POINT *EC_GROUP_get0_generator(const EC_GROUP *group) + { + if (group->meth->group_get0_generator == 0) + { + ECerr(EC_F_EC_GROUP_GET0_GENERATOR, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + return group->meth->group_get0_generator(group); + } + + +int EC_GROUP_get_order(const EC_GROUP *group, BIGNUM *order, BN_CTX *ctx) + { + if (group->meth->group_get_order == 0) + { + ECerr(EC_F_EC_GROUP_GET_ORDER, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + return group->meth->group_get_order(group, order, ctx); + } + + +int EC_GROUP_get_cofactor(const EC_GROUP *group, BIGNUM *cofactor, BN_CTX *ctx) + { + if (group->meth->group_get_cofactor == 0) + { + ECerr(EC_F_EC_GROUP_GET_COFACTOR, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + return group->meth->group_get_cofactor(group, cofactor, ctx); + } + + +/* this has 'package' visibility */ +int EC_GROUP_set_extra_data(EC_GROUP *group, void *extra_data, void *(*extra_data_dup_func)(void *), + void (*extra_data_free_func)(void *), void (*extra_data_clear_free_func)(void *)) + { + if ((group->extra_data != NULL) + || (group->extra_data_dup_func != 0) + || (group->extra_data_free_func != 0) + || (group->extra_data_clear_free_func != 0)) + { + ECerr(EC_F_EC_GROUP_SET_EXTRA_DATA, EC_R_SLOT_FULL); + return 0; + } + + group->extra_data = extra_data; + group->extra_data_dup_func = extra_data_dup_func; + group->extra_data_free_func = extra_data_free_func; + group->extra_data_clear_free_func = extra_data_clear_free_func; + return 1; + } + + +/* this has 'package' visibility */ +void *EC_GROUP_get_extra_data(const EC_GROUP *group, void *(*extra_data_dup_func)(void *), + void (*extra_data_free_func)(void *), void (*extra_data_clear_free_func)(void *)) + { + if ((group->extra_data_dup_func != extra_data_dup_func) + || (group->extra_data_free_func != extra_data_free_func) + || (group->extra_data_clear_free_func != extra_data_clear_free_func)) + { + ECerr(EC_F_EC_GROUP_GET_EXTRA_DATA, EC_R_NO_SUCH_EXTRA_DATA); + return NULL; + } + + return group->extra_data; + } + + +/* this has 'package' visibility */ +void EC_GROUP_free_extra_data(EC_GROUP *group) + { + if (group->extra_data_free_func) + group->extra_data_free_func(group->extra_data); + group->extra_data = NULL; + group->extra_data_dup_func = 0; + group->extra_data_free_func = 0; + group->extra_data_clear_free_func = 0; + } + + +/* this has 'package' visibility */ +void EC_GROUP_clear_free_extra_data(EC_GROUP *group) + { + if (group->extra_data_clear_free_func) + group->extra_data_clear_free_func(group->extra_data); + else if (group->extra_data_free_func) + group->extra_data_free_func(group->extra_data); + group->extra_data = NULL; + group->extra_data_dup_func = 0; + group->extra_data_free_func = 0; + group->extra_data_clear_free_func = 0; + } + + + +/* 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->meth->point_finish != 0) + point->meth->point_finish(point); + OPENSSL_free(point); + } + + +void EC_POINT_clear_free(EC_POINT *point) + { + if (point->meth->point_clear_finish != 0) + point->meth->point_clear_finish(point); + else if (point->meth != NULL && point->meth->point_finish != 0) + point->meth->point_finish(point); + memset(point, 0, 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); + } + + +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_GFp == 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_GFp(group, point, x, y, ctx); + } + + +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_GFp == 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_GFp(group, point, x, y, ctx); + } + + +int EC_POINT_set_compressed_coordinates_GFp(const EC_GROUP *group, EC_POINT *point, + const BIGNUM *x, int y_bit, BN_CTX *ctx) + { + if (group->meth->point_set_compressed_coordinates_GFp == 0) + { + ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + if (group->meth != point->meth) + { + ECerr(EC_F_EC_POINT_SET_COMPRESSED_COORDINATES_GFP, EC_R_INCOMPATIBLE_OBJECTS); + return 0; + } + return group->meth->point_set_compressed_coordinates_GFp(group, point, x, y_bit, ctx); + } + + +size_t EC_POINT_point2oct(const EC_GROUP *group, const EC_POINT *point, point_conversion_form_t form, + unsigned char *buf, size_t len, BN_CTX *ctx) + { + if (group->meth->point2oct == 0) + { + ECerr(EC_F_EC_POINT_POINT2OCT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + if (group->meth != point->meth) + { + ECerr(EC_F_EC_POINT_POINT2OCT, EC_R_INCOMPATIBLE_OBJECTS); + return 0; + } + return group->meth->point2oct(group, point, form, buf, len, ctx); + } + + +int EC_POINT_oct2point(const EC_GROUP *group, EC_POINT *point, + const unsigned char *buf, size_t len, BN_CTX *ctx) + { + if (group->meth->oct2point == 0) + { + ECerr(EC_F_EC_POINT_OCT2POINT, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + if (group->meth != point->meth) + { + ECerr(EC_F_EC_POINT_OCT2POINT, EC_R_INCOMPATIBLE_OBJECTS); + return 0; + } + return group->meth->oct2point(group, point, buf, len, ctx); + } + + +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->dbl == 0) + { + ECerr(EC_F_EC_POINT_DBL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); + return 0; + } + if (group->meth != a->meth) + { + ECerr(EC_F_EC_POINT_DBL, 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); + } + + +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 0; + } + if ((group->meth != a->meth) || (a->meth != b->meth)) + { + ECerr(EC_F_EC_POINT_CMP, EC_R_INCOMPATIBLE_OBJECTS); + return 0; + } + 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); + } -- cgit v1.2.3-55-g6feb