-/* TODO */
/* crypto/ec/ec_lib.c */
/* ====================================================================
* Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved.
*
*/
-#include <openssl/ec.h>
+#include <string.h>
+
+#include <openssl/err.h>
#include "ec_lcl.h"
+
+
+/* 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;
+
+ if (!meth->group_init(ret))
+ {
+ OPENSSL_free(ret);
+ return NULL;
+ }
+
+ return ret;
+ }
+
+
+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);
+ }
+
+
+void EC_GROUP_free(EC_GROUP *group)
+ {
+ if (group->meth->group_finish != 0)
+ group->meth->group_finish(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);
+ 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;
+ }
+
+ return dest->meth->group_copy(dest, src);
+ }
+
+
+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);
+ }
+
+
+/* TODO: 'get' functions for EC_GROUPs */
+
+
+
+/* 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;
+ }
+
+ return dest->meth->point_copy(dest, src);
+ }
+
+
+/* TODO: 'set' and 'get' functions for EC_POINTs */
+
+
+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_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_make_affine(const EC_GROUP *group, const 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);
+ }
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