Move more to git, add submodules, fix build script, change hgignore to gitignore

2 files changed, 0 insertions, 1339 deletions

diff --git a/main/openssl b/main/openssl
new file mode 160000
+Subproject 4d377a9ce111930d8a8f06dc0e94a892a7f6c51
diff --git a/main/openssl/crypto/ec/ecp_smpl.c b/main/openssl/crypto/ec/ecp_smpl.c
deleted file mode 100644
index 2d1f3576..00000000
--- a/main/openssl/crypto/ec/ecp_smpl.c
+++ /dev/null
@@ -1,1339 +0,0 @@
-/* crypto/ec/ecp_smpl.c */
-/* Includes code written by Lenka Fibikova <fibikova@exp-math.uni-essen.de>
- * for the OpenSSL project. 
- * Includes code written by Bodo Moeller for the OpenSSL project.
-*/
-/* ====================================================================
- * Copyright (c) 1998-2002 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.
- * Portions of this software developed by SUN MICROSYSTEMS, INC.,
- * and contributed to the OpenSSL project.
- */
-
-#include <openssl/err.h>
-#include <openssl/symhacks.h>
-
-#ifdef OPENSSL_FIPS
-#include <openssl/fips.h>
-#endif
-
-#include "ec_lcl.h"
-
-const EC_METHOD *EC_GFp_simple_method(void)
-	{
-	static const EC_METHOD ret = {
-		EC_FLAGS_DEFAULT_OCT,
-		NID_X9_62_prime_field,
-		ec_GFp_simple_group_init,
-		ec_GFp_simple_group_finish,
-		ec_GFp_simple_group_clear_finish,
-		ec_GFp_simple_group_copy,
-		ec_GFp_simple_group_set_curve,
-		ec_GFp_simple_group_get_curve,
-		ec_GFp_simple_group_get_degree,
-		ec_GFp_simple_group_check_discriminant,
-		ec_GFp_simple_point_init,
-		ec_GFp_simple_point_finish,
-		ec_GFp_simple_point_clear_finish,
-		ec_GFp_simple_point_copy,
-		ec_GFp_simple_point_set_to_infinity,
-		ec_GFp_simple_set_Jprojective_coordinates_GFp,
-		ec_GFp_simple_get_Jprojective_coordinates_GFp,
-		ec_GFp_simple_point_set_affine_coordinates,
-		ec_GFp_simple_point_get_affine_coordinates,
-		0,0,0,
-		ec_GFp_simple_add,
-		ec_GFp_simple_dbl,
-		ec_GFp_simple_invert,
-		ec_GFp_simple_is_at_infinity,
-		ec_GFp_simple_is_on_curve,
-		ec_GFp_simple_cmp,
-		ec_GFp_simple_make_affine,
-		ec_GFp_simple_points_make_affine,
-		0 /* mul */,
-		0 /* precompute_mult */,
-		0 /* have_precompute_mult */,	
-		ec_GFp_simple_field_mul,
-		ec_GFp_simple_field_sqr,
-		0 /* field_div */,
-		0 /* field_encode */,
-		0 /* field_decode */,
-		0 /* field_set_to_one */ };
-
-#ifdef OPENSSL_FIPS
-	if (FIPS_mode())
-		return fips_ec_gfp_simple_method();
-#endif
-
-	return &ret;
-	}
-
-
-/* Most method functions in this file are designed to work with
- * non-trivial representations of field elements if necessary
- * (see ecp_mont.c): while standard modular addition and subtraction
- * are used, the field_mul and field_sqr methods will be used for
- * multiplication, and field_encode and field_decode (if defined)
- * will be used for converting between representations.
-
- * Functions ec_GFp_simple_points_make_affine() and
- * ec_GFp_simple_point_get_affine_coordinates() specifically assume
- * that if a non-trivial representation is used, it is a Montgomery
- * representation (i.e. 'encoding' means multiplying by some factor R).
- */
-
-
-int ec_GFp_simple_group_init(EC_GROUP *group)
-	{
-	BN_init(&group->field);
-	BN_init(&group->a);
-	BN_init(&group->b);
-	group->a_is_minus3 = 0;
-	return 1;
-	}
-
-
-void ec_GFp_simple_group_finish(EC_GROUP *group)
-	{
-	BN_free(&group->field);
-	BN_free(&group->a);
-	BN_free(&group->b);
-	}
-
-
-void ec_GFp_simple_group_clear_finish(EC_GROUP *group)
-	{
-	BN_clear_free(&group->field);
-	BN_clear_free(&group->a);
-	BN_clear_free(&group->b);
-	}
-
-
-int ec_GFp_simple_group_copy(EC_GROUP *dest, const EC_GROUP *src)
-	{
-	if (!BN_copy(&dest->field, &src->field)) return 0;
-	if (!BN_copy(&dest->a, &src->a)) return 0;
-	if (!BN_copy(&dest->b, &src->b)) return 0;
-
-	dest->a_is_minus3 = src->a_is_minus3;
-
-	return 1;
-	}
-
-
-int ec_GFp_simple_group_set_curve(EC_GROUP *group,
-	const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
-	{
-	int ret = 0;
-	BN_CTX *new_ctx = NULL;
-	BIGNUM *tmp_a;
-	
-	/* p must be a prime > 3 */
-	if (BN_num_bits(p) <= 2 || !BN_is_odd(p))
-		{
-		ECerr(EC_F_EC_GFP_SIMPLE_GROUP_SET_CURVE, EC_R_INVALID_FIELD);
-		return 0;
-		}
-
-	if (ctx == NULL)
-		{
-		ctx = new_ctx = BN_CTX_new();
-		if (ctx == NULL)
-			return 0;
-		}
-
-	BN_CTX_start(ctx);
-	tmp_a = BN_CTX_get(ctx);
-	if (tmp_a == NULL) goto err;
-
-	/* group->field */
-	if (!BN_copy(&group->field, p)) goto err;
-	BN_set_negative(&group->field, 0);
-
-	/* group->a */
-	if (!BN_nnmod(tmp_a, a, p, ctx)) goto err;
-	if (group->meth->field_encode)
-		{ if (!group->meth->field_encode(group, &group->a, tmp_a, ctx)) goto err; }	
-	else
-		if (!BN_copy(&group->a, tmp_a)) goto err;
-	
-	/* group->b */
-	if (!BN_nnmod(&group->b, b, p, ctx)) goto err;
-	if (group->meth->field_encode)
-		if (!group->meth->field_encode(group, &group->b, &group->b, ctx)) goto err;
-	
-	/* group->a_is_minus3 */
-	if (!BN_add_word(tmp_a, 3)) goto err;
-	group->a_is_minus3 = (0 == BN_cmp(tmp_a, &group->field));
-
-	ret = 1;
-
- err:
-	BN_CTX_end(ctx);
-	if (new_ctx != NULL)
-		BN_CTX_free(new_ctx);
-	return ret;
-	}
-
-
-int ec_GFp_simple_group_get_curve(const EC_GROUP *group, BIGNUM *p, BIGNUM *a, BIGNUM *b, BN_CTX *ctx)
-	{
-	int ret = 0;
-	BN_CTX *new_ctx = NULL;
-	
-	if (p != NULL)
-		{
-		if (!BN_copy(p, &group->field)) return 0;
-		}
-
-	if (a != NULL || b != NULL)
-		{
-		if (group->meth->field_decode)
-			{
-			if (ctx == NULL)
-				{
-				ctx = new_ctx = BN_CTX_new();
-				if (ctx == NULL)
-					return 0;
-				}
-			if (a != NULL)
-				{
-				if (!group->meth->field_decode(group, a, &group->a, ctx)) goto err;
-				}
-			if (b != NULL)
-				{
-				if (!group->meth->field_decode(group, b, &group->b, ctx)) goto err;
-				}
-			}
-		else
-			{
-			if (a != NULL)
-				{
-				if (!BN_copy(a, &group->a)) goto err;
-				}
-			if (b != NULL)
-				{
-				if (!BN_copy(b, &group->b)) goto err;
-				}
-			}
-		}
-	
-	ret = 1;
-	
- err:
-	if (new_ctx)
-		BN_CTX_free(new_ctx);
-	return ret;
-	}
-
-
-int ec_GFp_simple_group_get_degree(const EC_GROUP *group)
-	{
-	return BN_num_bits(&group->field);
-	}
-
-
-int ec_GFp_simple_group_check_discriminant(const EC_GROUP *group, BN_CTX *ctx)
-	{
-	int ret = 0;
-	BIGNUM *a,*b,*order,*tmp_1,*tmp_2;
-	const BIGNUM *p = &group->field;
-	BN_CTX *new_ctx = NULL;
-
-	if (ctx == NULL)
-		{
-		ctx = new_ctx = BN_CTX_new();
-		if (ctx == NULL)
-			{
-			ECerr(EC_F_EC_GFP_SIMPLE_GROUP_CHECK_DISCRIMINANT, ERR_R_MALLOC_FAILURE);
-			goto err;
-			}
-		}
-	BN_CTX_start(ctx);
-	a = BN_CTX_get(ctx);
-	b = BN_CTX_get(ctx);
-	tmp_1 = BN_CTX_get(ctx);
-	tmp_2 = BN_CTX_get(ctx);
-	order = BN_CTX_get(ctx);
-	if (order == NULL) goto err;
-
-	if (group->meth->field_decode)
-		{
-		if (!group->meth->field_decode(group, a, &group->a, ctx)) goto err;
-		if (!group->meth->field_decode(group, b, &group->b, ctx)) goto err;
-		}
-	else
-		{
-		if (!BN_copy(a, &group->a)) goto err;
-		if (!BN_copy(b, &group->b)) goto err;
-		}
-	
-	/* check the discriminant:
-	 * y^2 = x^3 + a*x + b is an elliptic curve <=> 4*a^3 + 27*b^2 != 0 (mod p) 
-         * 0 =< a, b < p */
-	if (BN_is_zero(a))
-		{
-		if (BN_is_zero(b)) goto err;
-		}
-	else if (!BN_is_zero(b))
-		{
-		if (!BN_mod_sqr(tmp_1, a, p, ctx)) goto err;
-		if (!BN_mod_mul(tmp_2, tmp_1, a, p, ctx)) goto err;
-		if (!BN_lshift(tmp_1, tmp_2, 2)) goto err;
-		/* tmp_1 = 4*a^3 */
-
-		if (!BN_mod_sqr(tmp_2, b, p, ctx)) goto err;
-		if (!BN_mul_word(tmp_2, 27)) goto err;
-		/* tmp_2 = 27*b^2 */
-
-		if (!BN_mod_add(a, tmp_1, tmp_2, p, ctx)) goto err;
-		if (BN_is_zero(a)) goto err;
-		}
-	ret = 1;
-
-err:
-	if (ctx != NULL)
-		BN_CTX_end(ctx);
-	if (new_ctx != NULL)
-		BN_CTX_free(new_ctx);
-	return ret;
-	}
-
-
-int ec_GFp_simple_point_init(EC_POINT *point)
-	{
-	BN_init(&point->X);
-	BN_init(&point->Y);
-	BN_init(&point->Z);
-	point->Z_is_one = 0;
-
-	return 1;
-	}
-
-
-void ec_GFp_simple_point_finish(EC_POINT *point)
-	{
-	BN_free(&point->X);
-	BN_free(&point->Y);
-	BN_free(&point->Z);
-	}
-
-
-void ec_GFp_simple_point_clear_finish(EC_POINT *point)
-	{
-	BN_clear_free(&point->X);
-	BN_clear_free(&point->Y);
-	BN_clear_free(&point->Z);
-	point->Z_is_one = 0;
-	}
-
-
-int ec_GFp_simple_point_copy(EC_POINT *dest, const EC_POINT *src)
-	{
-	if (!BN_copy(&dest->X, &src->X)) return 0;
-	if (!BN_copy(&dest->Y, &src->Y)) return 0;
-	if (!BN_copy(&dest->Z, &src->Z)) return 0;
-	dest->Z_is_one = src->Z_is_one;
-
-	return 1;
-	}
-
-
-int ec_GFp_simple_point_set_to_infinity(const EC_GROUP *group, EC_POINT *point)
-	{
-	point->Z_is_one = 0;
-	BN_zero(&point->Z);
-	return 1;
-	}
-
-
-int ec_GFp_simple_set_Jprojective_coordinates_GFp(const EC_GROUP *group, EC_POINT *point,
-	const BIGNUM *x, const BIGNUM *y, const BIGNUM *z, BN_CTX *ctx)
-	{
-	BN_CTX *new_ctx = NULL;
-	int ret = 0;
-	
-	if (ctx == NULL)
-		{
-		ctx = new_ctx = BN_CTX_new();
-		if (ctx == NULL)
-			return 0;
-		}
-
-	if (x != NULL)
-		{
-		if (!BN_nnmod(&point->X, x, &group->field, ctx)) goto err;
-		if (group->meth->field_encode)
-			{
-			if (!group->meth->field_encode(group, &point->X, &point->X, ctx)) goto err;
-			}
-		}
-	
-	if (y != NULL)
-		{
-		if (!BN_nnmod(&point->Y, y, &group->field, ctx)) goto err;
-		if (group->meth->field_encode)
-			{
-			if (!group->meth->field_encode(group, &point->Y, &point->Y, ctx)) goto err;
-			}
-		}
-	
-	if (z != NULL)
-		{
-		int Z_is_one;
-
-		if (!BN_nnmod(&point->Z, z, &group->field, ctx)) goto err;
-		Z_is_one = BN_is_one(&point->Z);
-		if (group->meth->field_encode)
-			{
-			if (Z_is_one && (group->meth->field_set_to_one != 0))
-				{
-				if (!group->meth->field_set_to_one(group, &point->Z, ctx)) goto err;
-				}
-			else
-				{
-				if (!group->meth->field_encode(group, &point->Z, &point->Z, ctx)) goto err;
-				}
-			}
-		point->Z_is_one = Z_is_one;
-		}
-	
-	ret = 1;
-	
- err:
-	if (new_ctx != NULL)
-		BN_CTX_free(new_ctx);
-	return ret;
-	}
-
-
-int ec_GFp_simple_get_Jprojective_coordinates_GFp(const EC_GROUP *group, const EC_POINT *point,
-	BIGNUM *x, BIGNUM *y, BIGNUM *z, BN_CTX *ctx)
-	{
-	BN_CTX *new_ctx = NULL;
-	int ret = 0;
-	
-	if (group->meth->field_decode != 0)
-		{
-		if (ctx == NULL)
-			{
-			ctx = new_ctx = BN_CTX_new();
-			if (ctx == NULL)
-				return 0;
-			}
-
-		if (x != NULL)
-			{
-			if (!group->meth->field_decode(group, x, &point->X, ctx)) goto err;
-			}
-		if (y != NULL)
-			{
-			if (!group->meth->field_decode(group, y, &point->Y, ctx)) goto err;
-			}
-		if (z != NULL)
-			{
-			if (!group->meth->field_decode(group, z, &point->Z, ctx)) goto err;
-			}
-		}
-	else	
-		{
-		if (x != NULL)
-			{
-			if (!BN_copy(x, &point->X)) goto err;
-			}
-		if (y != NULL)
-			{
-			if (!BN_copy(y, &point->Y)) goto err;
-			}
-		if (z != NULL)
-			{
-			if (!BN_copy(z, &point->Z)) goto err;
-			}
-		}
-	
-	ret = 1;
-
- err:
-	if (new_ctx != NULL)
-		BN_CTX_free(new_ctx);
-	return ret;
-	}
-
-
-int ec_GFp_simple_point_set_affine_coordinates(const EC_GROUP *group, EC_POINT *point,
-	const BIGNUM *x, const BIGNUM *y, BN_CTX *ctx)
-	{
-	if (x == NULL || y == NULL)
-		{
-		/* unlike for projective coordinates, we do not tolerate this */
-		ECerr(EC_F_EC_GFP_SIMPLE_POINT_SET_AFFINE_COORDINATES, ERR_R_PASSED_NULL_PARAMETER);
-		return 0;
-		}
-
-	return EC_POINT_set_Jprojective_coordinates_GFp(group, point, x, y, BN_value_one(), ctx);
-	}
-
-
-int ec_GFp_simple_point_get_affine_coordinates(const EC_GROUP *group, const EC_POINT *point,
-	BIGNUM *x, BIGNUM *y, BN_CTX *ctx)
-	{
-	BN_CTX *new_ctx = NULL;
-	BIGNUM *Z, *Z_1, *Z_2, *Z_3;
-	const BIGNUM *Z_;
-	int ret = 0;
-
-	if (EC_POINT_is_at_infinity(group, point))
-		{
-		ECerr(EC_F_EC_GFP_SIMPLE_POINT_GET_AFFINE_COORDINATES, EC_R_POINT_AT_INFINITY);
-		return 0;
-		}
-
-	if (ctx == NULL)
-		{
-		ctx = new_ctx = BN_CTX_new();
-		if (ctx == NULL)
-			return 0;
-		}
-
-	BN_CTX_start(ctx);
-	Z = BN_CTX_get(ctx);
-	Z_1 = BN_CTX_get(ctx);
-	Z_2 = BN_CTX_get(ctx);
-	Z_3 = BN_CTX_get(ctx);
-	if (Z_3 == NULL) goto err;
-
-	/* transform  (X, Y, Z)  into  (x, y) := (X/Z^2, Y/Z^3) */
-	
-	if (group->meth->field_decode)
-		{
-		if (!group->meth->field_decode(group, Z, &point->Z, ctx)) goto err;
-		Z_ = Z;
-		}
-	else
-		{
-		Z_ = &point->Z;
-		}
-	
-	if (BN_is_one(Z_))
-		{
-		if (group->meth->field_decode)
-			{
-			if (x != NULL)
-				{
-				if (!group->meth->field_decode(group, x, &point->X, ctx)) goto err;
-				}
-			if (y != NULL)
-				{
-				if (!group->meth->field_decode(group, y, &point->Y, ctx)) goto err;
-				}
-			}
-		else
-			{
-			if (x != NULL)
-				{
-				if (!BN_copy(x, &point->X)) goto err;
-				}
-			if (y != NULL)
-				{
-				if (!BN_copy(y, &point->Y)) goto err;
-				}
-			}
-		}
-	else
-		{
-		if (!BN_mod_inverse(Z_1, Z_, &group->field, ctx))
-			{
-			ECerr(EC_F_EC_GFP_SIMPLE_POINT_GET_AFFINE_COORDINATES, ERR_R_BN_LIB);
-			goto err;
-			}
-		
-		if (group->meth->field_encode == 0)
-			{
-			/* field_sqr works on standard representation */
-			if (!group->meth->field_sqr(group, Z_2, Z_1, ctx)) goto err;
-			}
-		else
-			{
-			if (!BN_mod_sqr(Z_2, Z_1, &group->field, ctx)) goto err;
-			}
-	
-		if (x != NULL)
-			{
-			/* in the Montgomery case, field_mul will cancel out Montgomery factor in X: */
-			if (!group->meth->field_mul(group, x, &point->X, Z_2, ctx)) goto err;
-			}
-
-		if (y != NULL)
-			{
-			if (group->meth->field_encode == 0)
-				{
-				/* field_mul works on standard representation */
-				if (!group->meth->field_mul(group, Z_3, Z_2, Z_1, ctx)) goto err;
-				}
-			else
-				{
-				if (!BN_mod_mul(Z_3, Z_2, Z_1, &group->field, ctx)) goto err;
-				}
-
-			/* in the Montgomery case, field_mul will cancel out Montgomery factor in Y: */
-			if (!group->meth->field_mul(group, y, &point->Y, Z_3, ctx)) goto err;
-			}
-		}
-
-	ret = 1;
-
- err:
-	BN_CTX_end(ctx);
-	if (new_ctx != NULL)
-		BN_CTX_free(new_ctx);
-	return ret;
-	}
-
-int ec_GFp_simple_add(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, const EC_POINT *b, BN_CTX *ctx)
-	{
-	int (*field_mul)(const EC_GROUP *, BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *);
-	int (*field_sqr)(const EC_GROUP *, BIGNUM *, const BIGNUM *, BN_CTX *);
-	const BIGNUM *p;
-	BN_CTX *new_ctx = NULL;
-	BIGNUM *n0, *n1, *n2, *n3, *n4, *n5, *n6;
-	int ret = 0;
-	
-	if (a == b)
-		return EC_POINT_dbl(group, r, a, ctx);
-	if (EC_POINT_is_at_infinity(group, a))
-		return EC_POINT_copy(r, b);
-	if (EC_POINT_is_at_infinity(group, b))
-		return EC_POINT_copy(r, a);
-	
-	field_mul = group->meth->field_mul;
-	field_sqr = group->meth->field_sqr;
-	p = &group->field;
-
-	if (ctx == NULL)
-		{
-		ctx = new_ctx = BN_CTX_new();
-		if (ctx == NULL)
-			return 0;
-		}
-
-	BN_CTX_start(ctx);
-	n0 = BN_CTX_get(ctx);
-	n1 = BN_CTX_get(ctx);
-	n2 = BN_CTX_get(ctx);
-	n3 = BN_CTX_get(ctx);
-	n4 = BN_CTX_get(ctx);
-	n5 = BN_CTX_get(ctx);
-	n6 = BN_CTX_get(ctx);
-	if (n6 == NULL) goto end;
-
-	/* Note that in this function we must not read components of 'a' or 'b'
-	 * once we have written the corresponding components of 'r'.
-	 * ('r' might be one of 'a' or 'b'.)
-	 */
-
-	/* n1, n2 */
-	if (b->Z_is_one)
-		{
-		if (!BN_copy(n1, &a->X)) goto end;
-		if (!BN_copy(n2, &a->Y)) goto end;
-		/* n1 = X_a */
-		/* n2 = Y_a */
-		}
-	else
-		{
-		if (!field_sqr(group, n0, &b->Z, ctx)) goto end;
-		if (!field_mul(group, n1, &a->X, n0, ctx)) goto end;
-		/* n1 = X_a * Z_b^2 */
-
-		if (!field_mul(group, n0, n0, &b->Z, ctx)) goto end;
-		if (!field_mul(group, n2, &a->Y, n0, ctx)) goto end;
-		/* n2 = Y_a * Z_b^3 */
-		}
-
-	/* n3, n4 */
-	if (a->Z_is_one)
-		{
-		if (!BN_copy(n3, &b->X)) goto end;
-		if (!BN_copy(n4, &b->Y)) goto end;
-		/* n3 = X_b */
-		/* n4 = Y_b */
-		}
-	else
-		{
-		if (!field_sqr(group, n0, &a->Z, ctx)) goto end;
-		if (!field_mul(group, n3, &b->X, n0, ctx)) goto end;
-		/* n3 = X_b * Z_a^2 */
-
-		if (!field_mul(group, n0, n0, &a->Z, ctx)) goto end;
-		if (!field_mul(group, n4, &b->Y, n0, ctx)) goto end;
-		/* n4 = Y_b * Z_a^3 */
-		}
-
-	/* n5, n6 */
-	if (!BN_mod_sub_quick(n5, n1, n3, p)) goto end;
-	if (!BN_mod_sub_quick(n6, n2, n4, p)) goto end;
-	/* n5 = n1 - n3 */
-	/* n6 = n2 - n4 */
-
-	if (BN_is_zero(n5))
-		{
-		if (BN_is_zero(n6))
-			{
-			/* a is the same point as b */
-			BN_CTX_end(ctx);
-			ret = EC_POINT_dbl(group, r, a, ctx);
-			ctx = NULL;
-			goto end;
-			}
-		else
-			{
-			/* a is the inverse of b */
-			BN_zero(&r->Z);
-			r->Z_is_one = 0;
-			ret = 1;
-			goto end;
-			}
-		}
-
-	/* 'n7', 'n8' */
-	if (!BN_mod_add_quick(n1, n1, n3, p)) goto end;
-	if (!BN_mod_add_quick(n2, n2, n4, p)) goto end;
-	/* 'n7' = n1 + n3 */
-	/* 'n8' = n2 + n4 */
-
-	/* Z_r */
-	if (a->Z_is_one && b->Z_is_one)
-		{
-		if (!BN_copy(&r->Z, n5)) goto end;
-		}
-	else
-		{
-		if (a->Z_is_one)
-			{ if (!BN_copy(n0, &b->Z)) goto end; }
-		else if (b->Z_is_one)
-			{ if (!BN_copy(n0, &a->Z)) goto end; }
-		else
-			{ if (!field_mul(group, n0, &a->Z, &b->Z, ctx)) goto end; }
-		if (!field_mul(group, &r->Z, n0, n5, ctx)) goto end;
-		}
-	r->Z_is_one = 0;
-	/* Z_r = Z_a * Z_b * n5 */
-
-	/* X_r */
-	if (!field_sqr(group, n0, n6, ctx)) goto end;
-	if (!field_sqr(group, n4, n5, ctx)) goto end;
-	if (!field_mul(group, n3, n1, n4, ctx)) goto end;
-	if (!BN_mod_sub_quick(&r->X, n0, n3, p)) goto end;
-	/* X_r = n6^2 - n5^2 * 'n7' */
-	
-	/* 'n9' */
-	if (!BN_mod_lshift1_quick(n0, &r->X, p)) goto end;
-	if (!BN_mod_sub_quick(n0, n3, n0, p)) goto end;
-	/* n9 = n5^2 * 'n7' - 2 * X_r */
-
-	/* Y_r */
-	if (!field_mul(group, n0, n0, n6, ctx)) goto end;
-	if (!field_mul(group, n5, n4, n5, ctx)) goto end; /* now n5 is n5^3 */
-	if (!field_mul(group, n1, n2, n5, ctx)) goto end;
-	if (!BN_mod_sub_quick(n0, n0, n1, p)) goto end;
-	if (BN_is_odd(n0))
-		if (!BN_add(n0, n0, p)) goto end;
-	/* now  0 <= n0 < 2*p,  and n0 is even */
-	if (!BN_rshift1(&r->Y, n0)) goto end;
-	/* Y_r = (n6 * 'n9' - 'n8' * 'n5^3') / 2 */
-
-	ret = 1;
-
- end:
-	if (ctx) /* otherwise we already called BN_CTX_end */
-		BN_CTX_end(ctx);
-	if (new_ctx != NULL)
-		BN_CTX_free(new_ctx);
-	return ret;
-	}
-
-
-int ec_GFp_simple_dbl(const EC_GROUP *group, EC_POINT *r, const EC_POINT *a, BN_CTX *ctx)
-	{
-	int (*field_mul)(const EC_GROUP *, BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *);
-	int (*field_sqr)(const EC_GROUP *, BIGNUM *, const BIGNUM *, BN_CTX *);
-	const BIGNUM *p;
-	BN_CTX *new_ctx = NULL;
-	BIGNUM *n0, *n1, *n2, *n3;
-	int ret = 0;
-	
-	if (EC_POINT_is_at_infinity(group, a))
-		{
-		BN_zero(&r->Z);
-		r->Z_is_one = 0;
-		return 1;
-		}
-
-	field_mul = group->meth->field_mul;
-	field_sqr = group->meth->field_sqr;
-	p = &group->field;
-
-	if (ctx == NULL)
-		{
-		ctx = new_ctx = BN_CTX_new();
-		if (ctx == NULL)
-			return 0;
-		}
-
-	BN_CTX_start(ctx);
-	n0 = BN_CTX_get(ctx);
-	n1 = BN_CTX_get(ctx);
-	n2 = BN_CTX_get(ctx);
-	n3 = BN_CTX_get(ctx);
-	if (n3 == NULL) goto err;
-
-	/* Note that in this function we must not read components of 'a'
-	 * once we have written the corresponding components of 'r'.
-	 * ('r' might the same as 'a'.)
-	 */
-
-	/* n1 */
-	if (a->Z_is_one)
-		{
-		if (!field_sqr(group, n0, &a->X, ctx)) goto err;
-		if (!BN_mod_lshift1_quick(n1, n0, p)) goto err;
-		if (!BN_mod_add_quick(n0, n0, n1, p)) goto err;
-		if (!BN_mod_add_quick(n1, n0, &group->a, p)) goto err;
-		/* n1 = 3 * X_a^2 + a_curve */
-		}
-	else if (group->a_is_minus3)
-		{
-		if (!field_sqr(group, n1, &a->Z, ctx)) goto err;
-		if (!BN_mod_add_quick(n0, &a->X, n1, p)) goto err;
-		if (!BN_mod_sub_quick(n2, &a->X, n1, p)) goto err;
-		if (!field_mul(group, n1, n0, n2, ctx)) goto err;
-		if (!BN_mod_lshift1_quick(n0, n1, p)) goto err;
-		if (!BN_mod_add_quick(n1, n0, n1, p)) goto err;
-		/* n1 = 3 * (X_a + Z_a^2) * (X_a - Z_a^2)
-		 *    = 3 * X_a^2 - 3 * Z_a^4 */
-		}
-	else
-		{
-		if (!field_sqr(group, n0, &a->X, ctx)) goto err;
-		if (!BN_mod_lshift1_quick(n1, n0, p)) goto err;
-		if (!BN_mod_add_quick(n0, n0, n1, p)) goto err;
-		if (!field_sqr(group, n1, &a->Z, ctx)) goto err;
-		if (!field_sqr(group, n1, n1, ctx)) goto err;
-		if (!field_mul(group, n1, n1, &group->a, ctx)) goto err;
-		if (!BN_mod_add_quick(n1, n1, n0, p)) goto err;
-		/* n1 = 3 * X_a^2 + a_curve * Z_a^4 */
-		}
-
-	/* Z_r */
-	if (a->Z_is_one)
-		{
-		if (!BN_copy(n0, &a->Y)) goto err;
-		}
-	else
-		{
-		if (!field_mul(group, n0, &a->Y, &a->Z, ctx)) goto err;
-		}
-	if (!BN_mod_lshift1_quick(&r->Z, n0, p)) goto err;
-	r->Z_is_one = 0;
-	/* Z_r = 2 * Y_a * Z_a */
-
-	/* n2 */
-	if (!field_sqr(group, n3, &a->Y, ctx)) goto err;
-	if (!field_mul(group, n2, &a->X, n3, ctx)) goto err;
-	if (!BN_mod_lshift_quick(n2, n2, 2, p)) goto err;
-	/* n2 = 4 * X_a * Y_a^2 */
-
-	/* X_r */
-	if (!BN_mod_lshift1_quick(n0, n2, p)) goto err;
-	if (!field_sqr(group, &r->X, n1, ctx)) goto err;
-	if (!BN_mod_sub_quick(&r->X, &r->X, n0, p)) goto err;
-	/* X_r = n1^2 - 2 * n2 */
-	
-	/* n3 */
-	if (!field_sqr(group, n0, n3, ctx)) goto err;
-	if (!BN_mod_lshift_quick(n3, n0, 3, p)) goto err;
-	/* n3 = 8 * Y_a^4 */
-	
-	/* Y_r */
-	if (!BN_mod_sub_quick(n0, n2, &r->X, p)) goto err;
-	if (!field_mul(group, n0, n1, n0, ctx)) goto err;
-	if (!BN_mod_sub_quick(&r->Y, n0, n3, p)) goto err;
-	/* Y_r = n1 * (n2 - X_r) - n3 */
-
-	ret = 1;
-
- err:
-	BN_CTX_end(ctx);
-	if (new_ctx != NULL)
-		BN_CTX_free(new_ctx);
-	return ret;
-	}
-
-
-int ec_GFp_simple_invert(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx)
-	{
-	if (EC_POINT_is_at_infinity(group, point) || BN_is_zero(&point->Y))
-		/* point is its own inverse */
-		return 1;
-	
-	return BN_usub(&point->Y, &group->field, &point->Y);
-	}
-
-
-int ec_GFp_simple_is_at_infinity(const EC_GROUP *group, const EC_POINT *point)
-	{
-	return BN_is_zero(&point->Z);
-	}
-
-
-int ec_GFp_simple_is_on_curve(const EC_GROUP *group, const EC_POINT *point, BN_CTX *ctx)
-	{
-	int (*field_mul)(const EC_GROUP *, BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *);
-	int (*field_sqr)(const EC_GROUP *, BIGNUM *, const BIGNUM *, BN_CTX *);
-	const BIGNUM *p;
-	BN_CTX *new_ctx = NULL;
-	BIGNUM *rh, *tmp, *Z4, *Z6;
-	int ret = -1;
-
-	if (EC_POINT_is_at_infinity(group, point))
-		return 1;
-	
-	field_mul = group->meth->field_mul;
-	field_sqr = group->meth->field_sqr;
-	p = &group->field;
-
-	if (ctx == NULL)
-		{
-		ctx = new_ctx = BN_CTX_new();
-		if (ctx == NULL)
-			return -1;
-		}
-
-	BN_CTX_start(ctx);
-	rh = BN_CTX_get(ctx);
-	tmp = BN_CTX_get(ctx);
-	Z4 = BN_CTX_get(ctx);
-	Z6 = BN_CTX_get(ctx);
-	if (Z6 == NULL) goto err;
-
-	/* We have a curve defined by a Weierstrass equation
-	 *      y^2 = x^3 + a*x + b.
-	 * The point to consider is given in Jacobian projective coordinates
-	 * where  (X, Y, Z)  represents  (x, y) = (X/Z^2, Y/Z^3).
-	 * Substituting this and multiplying by  Z^6  transforms the above equation into
-	 *      Y^2 = X^3 + a*X*Z^4 + b*Z^6.
-	 * To test this, we add up the right-hand side in 'rh'.
-	 */
-
-	/* rh := X^2 */
-	if (!field_sqr(group, rh, &point->X, ctx)) goto err;
-
-	if (!point->Z_is_one)
-		{
-		if (!field_sqr(group, tmp, &point->Z, ctx)) goto err;
-		if (!field_sqr(group, Z4, tmp, ctx)) goto err;
-		if (!field_mul(group, Z6, Z4, tmp, ctx)) goto err;
-
-		/* rh := (rh + a*Z^4)*X */
-		if (group->a_is_minus3)
-			{
-			if (!BN_mod_lshift1_quick(tmp, Z4, p)) goto err;
-			if (!BN_mod_add_quick(tmp, tmp, Z4, p)) goto err;
-			if (!BN_mod_sub_quick(rh, rh, tmp, p)) goto err;
-			if (!field_mul(group, rh, rh, &point->X, ctx)) goto err;
-			}
-		else
-			{
-			if (!field_mul(group, tmp, Z4, &group->a, ctx)) goto err;
-			if (!BN_mod_add_quick(rh, rh, tmp, p)) goto err;
-			if (!field_mul(group, rh, rh, &point->X, ctx)) goto err;
-			}
-
-		/* rh := rh + b*Z^6 */
-		if (!field_mul(group, tmp, &group->b, Z6, ctx)) goto err;
-		if (!BN_mod_add_quick(rh, rh, tmp, p)) goto err;
-		}
-	else
-		{
-		/* point->Z_is_one */
-
-		/* rh := (rh + a)*X */
-		if (!BN_mod_add_quick(rh, rh, &group->a, p)) goto err;
-		if (!field_mul(group, rh, rh, &point->X, ctx)) goto err;
-		/* rh := rh + b */
-		if (!BN_mod_add_quick(rh, rh, &group->b, p)) goto err;
-		}
-
-	/* 'lh' := Y^2 */
-	if (!field_sqr(group, tmp, &point->Y, ctx)) goto err;
-
-	ret = (0 == BN_ucmp(tmp, rh));
-
- err:
-	BN_CTX_end(ctx);
-	if (new_ctx != NULL)
-		BN_CTX_free(new_ctx);
-	return ret;
-	}
-
-
-int ec_GFp_simple_cmp(const EC_GROUP *group, const EC_POINT *a, const EC_POINT *b, BN_CTX *ctx)
-	{
-	/* return values:
-	 *  -1   error
-	 *   0   equal (in affine coordinates)
-	 *   1   not equal
-	 */
-
-	int (*field_mul)(const EC_GROUP *, BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *);
-	int (*field_sqr)(const EC_GROUP *, BIGNUM *, const BIGNUM *, BN_CTX *);
-	BN_CTX *new_ctx = NULL;
-	BIGNUM *tmp1, *tmp2, *Za23, *Zb23;
-	const BIGNUM *tmp1_, *tmp2_;
-	int ret = -1;
-	
-	if (EC_POINT_is_at_infinity(group, a))
-		{
-		return EC_POINT_is_at_infinity(group, b) ? 0 : 1;
-		}
-
-	if (EC_POINT_is_at_infinity(group, b))
-		return 1;
-	
-	if (a->Z_is_one && b->Z_is_one)
-		{
-		return ((BN_cmp(&a->X, &b->X) == 0) && BN_cmp(&a->Y, &b->Y) == 0) ? 0 : 1;
-		}
-
-	field_mul = group->meth->field_mul;
-	field_sqr = group->meth->field_sqr;
-
-	if (ctx == NULL)
-		{
-		ctx = new_ctx = BN_CTX_new();
-		if (ctx == NULL)
-			return -1;
-		}
-
-	BN_CTX_start(ctx);
-	tmp1 = BN_CTX_get(ctx);
-	tmp2 = BN_CTX_get(ctx);
-	Za23 = BN_CTX_get(ctx);
-	Zb23 = BN_CTX_get(ctx);
-	if (Zb23 == NULL) goto end;
-
-	/* We have to decide whether
-	 *     (X_a/Z_a^2, Y_a/Z_a^3) = (X_b/Z_b^2, Y_b/Z_b^3),
-	 * or equivalently, whether
-	 *     (X_a*Z_b^2, Y_a*Z_b^3) = (X_b*Z_a^2, Y_b*Z_a^3).
-	 */
-
-	if (!b->Z_is_one)
-		{
-		if (!field_sqr(group, Zb23, &b->Z, ctx)) goto end;
-		if (!field_mul(group, tmp1, &a->X, Zb23, ctx)) goto end;
-		tmp1_ = tmp1;
-		}
-	else
-		tmp1_ = &a->X;
-	if (!a->Z_is_one)
-		{
-		if (!field_sqr(group, Za23, &a->Z, ctx)) goto end;
-		if (!field_mul(group, tmp2, &b->X, Za23, ctx)) goto end;
-		tmp2_ = tmp2;
-		}
-	else
-		tmp2_ = &b->X;
-	
-	/* compare  X_a*Z_b^2  with  X_b*Z_a^2 */
-	if (BN_cmp(tmp1_, tmp2_) != 0)
-		{
-		ret = 1; /* points differ */
-		goto end;
-		}
-
-
-	if (!b->Z_is_one)
-		{
-		if (!field_mul(group, Zb23, Zb23, &b->Z, ctx)) goto end;
-		if (!field_mul(group, tmp1, &a->Y, Zb23, ctx)) goto end;
-		/* tmp1_ = tmp1 */
-		}
-	else
-		tmp1_ = &a->Y;
-	if (!a->Z_is_one)
-		{
-		if (!field_mul(group, Za23, Za23, &a->Z, ctx)) goto end;
-		if (!field_mul(group, tmp2, &b->Y, Za23, ctx)) goto end;
-		/* tmp2_ = tmp2 */
-		}
-	else
-		tmp2_ = &b->Y;
-
-	/* compare  Y_a*Z_b^3  with  Y_b*Z_a^3 */
-	if (BN_cmp(tmp1_, tmp2_) != 0)
-		{
-		ret = 1; /* points differ */
-		goto end;
-		}
-
-	/* points are equal */
-	ret = 0;
-
- end:
-	BN_CTX_end(ctx);
-	if (new_ctx != NULL)
-		BN_CTX_free(new_ctx);
-	return ret;
-	}
-
-
-int ec_GFp_simple_make_affine(const EC_GROUP *group, EC_POINT *point, BN_CTX *ctx)
-	{
-	BN_CTX *new_ctx = NULL;
-	BIGNUM *x, *y;
-	int ret = 0;
-
-	if (point->Z_is_one || EC_POINT_is_at_infinity(group, point))
-		return 1;
-
-	if (ctx == NULL)
-		{
-		ctx = new_ctx = BN_CTX_new();
-		if (ctx == NULL)
-			return 0;
-		}
-
-	BN_CTX_start(ctx);
-	x = BN_CTX_get(ctx);
-	y = BN_CTX_get(ctx);
-	if (y == NULL) goto err;
-
-	if (!EC_POINT_get_affine_coordinates_GFp(group, point, x, y, ctx)) goto err;
-	if (!EC_POINT_set_affine_coordinates_GFp(group, point, x, y, ctx)) goto err;
-	if (!point->Z_is_one)
-		{
-		ECerr(EC_F_EC_GFP_SIMPLE_MAKE_AFFINE, ERR_R_INTERNAL_ERROR);
-		goto err;
-		}
-	
-	ret = 1;
-
- err:
-	BN_CTX_end(ctx);
-	if (new_ctx != NULL)
-		BN_CTX_free(new_ctx);
-	return ret;
-	}
-
-
-int ec_GFp_simple_points_make_affine(const EC_GROUP *group, size_t num, EC_POINT *points[], BN_CTX *ctx)
-	{
-	BN_CTX *new_ctx = NULL;
-	BIGNUM *tmp, *tmp_Z;
-	BIGNUM **prod_Z = NULL;
-	size_t i;
-	int ret = 0;
-
-	if (num == 0)
-		return 1;
-
-	if (ctx == NULL)
-		{
-		ctx = new_ctx = BN_CTX_new();
-		if (ctx == NULL)
-			return 0;
-		}
-
-	BN_CTX_start(ctx);
-	tmp = BN_CTX_get(ctx);
-	tmp_Z = BN_CTX_get(ctx);
-	if (tmp == NULL || tmp_Z == NULL) goto err;
-
-	prod_Z = OPENSSL_malloc(num * sizeof prod_Z[0]);
-	if (prod_Z == NULL) goto err;
-	for (i = 0; i < num; i++)
-		{
-		prod_Z[i] = BN_new();
-		if (prod_Z[i] == NULL) goto err;
-		}
-
-	/* Set each prod_Z[i] to the product of points[0]->Z .. points[i]->Z,
-	 * skipping any zero-valued inputs (pretend that they're 1). */
-
-	if (!BN_is_zero(&points[0]->Z))
-		{
-		if (!BN_copy(prod_Z[0], &points[0]->Z)) goto err;
-		}
-	else
-		{
-		if (group->meth->field_set_to_one != 0)
-			{
-			if (!group->meth->field_set_to_one(group, prod_Z[0], ctx)) goto err;
-			}
-		else
-			{
-			if (!BN_one(prod_Z[0])) goto err;
-			}
-		}
-
-	for (i = 1; i < num; i++)
-		{
-		if (!BN_is_zero(&points[i]->Z))
-			{
-			if (!group->meth->field_mul(group, prod_Z[i], prod_Z[i - 1], &points[i]->Z, ctx)) goto err;
-			}
-		else
-			{
-			if (!BN_copy(prod_Z[i], prod_Z[i - 1])) goto err;
-			}
-		}
-
-	/* Now use a single explicit inversion to replace every
-	 * non-zero points[i]->Z by its inverse. */
-
-	if (!BN_mod_inverse(tmp, prod_Z[num - 1], &group->field, ctx))
-		{
-		ECerr(EC_F_EC_GFP_SIMPLE_POINTS_MAKE_AFFINE, ERR_R_BN_LIB);
-		goto err;
-		}
-	if (group->meth->field_encode != 0)
-		{
-		/* In the Montgomery case, we just turned  R*H  (representing H)
-		 * into  1/(R*H),  but we need  R*(1/H)  (representing 1/H);
-		 * i.e. we need to multiply by the Montgomery factor twice. */
-		if (!group->meth->field_encode(group, tmp, tmp, ctx)) goto err;
-		if (!group->meth->field_encode(group, tmp, tmp, ctx)) goto err;
-		}
-
-	for (i = num - 1; i > 0; --i)
-		{
-		/* Loop invariant: tmp is the product of the inverses of
-		 * points[0]->Z .. points[i]->Z (zero-valued inputs skipped). */
-		if (!BN_is_zero(&points[i]->Z))
-			{
-			/* Set tmp_Z to the inverse of points[i]->Z (as product
-			 * of Z inverses 0 .. i, Z values 0 .. i - 1). */
-			if (!group->meth->field_mul(group, tmp_Z, prod_Z[i - 1], tmp, ctx)) goto err;
-			/* Update tmp to satisfy the loop invariant for i - 1. */
-			if (!group->meth->field_mul(group, tmp, tmp, &points[i]->Z, ctx)) goto err;
-			/* Replace points[i]->Z by its inverse. */
-			if (!BN_copy(&points[i]->Z, tmp_Z)) goto err;
-			}
-		}
-
-	if (!BN_is_zero(&points[0]->Z))
-		{
-		/* Replace points[0]->Z by its inverse. */
-		if (!BN_copy(&points[0]->Z, tmp)) goto err;
-		}
-
-	/* Finally, fix up the X and Y coordinates for all points. */
-
-	for (i = 0; i < num; i++)
-		{
-		EC_POINT *p = points[i];
-
-		if (!BN_is_zero(&p->Z))
-			{
-			/* turn  (X, Y, 1/Z)  into  (X/Z^2, Y/Z^3, 1) */
-
-			if (!group->meth->field_sqr(group, tmp, &p->Z, ctx)) goto err;
-			if (!group->meth->field_mul(group, &p->X, &p->X, tmp, ctx)) goto err;
-
-			if (!group->meth->field_mul(group, tmp, tmp, &p->Z, ctx)) goto err;
-			if (!group->meth->field_mul(group, &p->Y, &p->Y, tmp, ctx)) goto err;
-
-			if (group->meth->field_set_to_one != 0)
-				{
-				if (!group->meth->field_set_to_one(group, &p->Z, ctx)) goto err;
-				}
-			else
-				{
-				if (!BN_one(&p->Z)) goto err;
-				}
-			p->Z_is_one = 1;
-			}
-		}
-
-	ret = 1;
-
- err:
-	BN_CTX_end(ctx);
-	if (new_ctx != NULL)
-		BN_CTX_free(new_ctx);
-	if (prod_Z != NULL)
-		{
-		for (i = 0; i < num; i++)
-			{
-			if (prod_Z[i] == NULL) break;
-			BN_clear_free(prod_Z[i]);
-			}
-		OPENSSL_free(prod_Z);
-		}
-	return ret;
-	}
-
-
-int ec_GFp_simple_field_mul(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx)
-	{
-	return BN_mod_mul(r, a, b, &group->field, ctx);
-	}
-
-
-int ec_GFp_simple_field_sqr(const EC_GROUP *group, BIGNUM *r, const BIGNUM *a, BN_CTX *ctx)
-	{
-	return BN_mod_sqr(r, a, &group->field, ctx);
-	}