| Index: openssl/crypto/ec/ec2_smpt.c
|
| ===================================================================
|
| --- openssl/crypto/ec/ec2_smpt.c (revision 105093)
|
| +++ openssl/crypto/ec/ec2_smpt.c (working copy)
|
| @@ -1,141 +0,0 @@
|
| -/* crypto/ec/ec2_smpt.c */
|
| -/* This code was originally written by Douglas Stebila
|
| - * <dstebila@student.math.uwaterloo.ca> 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).
|
| - *
|
| - */
|
| -
|
| -
|
| -/* Calaculates and sets the affine coordinates of an EC_POINT from the given
|
| - * compressed coordinates. Uses algorithm 2.3.4 of SEC 1.
|
| - * Note that the simple implementation only uses affine coordinates.
|
| - *
|
| - * This algorithm is patented by Certicom Corp. under US Patent 6,141,420
|
| - * (for licensing information, contact licensing@certicom.com).
|
| - * This function is disabled by default and can be enabled by defining the
|
| - * preprocessor macro OPENSSL_EC_BIN_PT_COMP at Configure-time.
|
| - */
|
| -int ec_GF2m_simple_set_compressed_coordinates(const EC_GROUP *group, EC_POINT *point,
|
| - const BIGNUM *x_, int y_bit, BN_CTX *ctx)
|
| - {
|
| -#ifndef OPENSSL_EC_BIN_PT_COMP
|
| - ECerr(EC_F_EC_GF2M_SIMPLE_SET_COMPRESSED_COORDINATES, ERR_R_DISABLED);
|
| - return 0;
|
| -#else
|
| - BN_CTX *new_ctx = NULL;
|
| - BIGNUM *tmp, *x, *y, *z;
|
| - int ret = 0, z0;
|
| -
|
| - /* clear error queue */
|
| - ERR_clear_error();
|
| -
|
| - if (ctx == NULL)
|
| - {
|
| - ctx = new_ctx = BN_CTX_new();
|
| - if (ctx == NULL)
|
| - return 0;
|
| - }
|
| -
|
| - y_bit = (y_bit != 0) ? 1 : 0;
|
| -
|
| - BN_CTX_start(ctx);
|
| - tmp = BN_CTX_get(ctx);
|
| - x = BN_CTX_get(ctx);
|
| - y = BN_CTX_get(ctx);
|
| - z = BN_CTX_get(ctx);
|
| - if (z == NULL) goto err;
|
| -
|
| - if (!BN_GF2m_mod_arr(x, x_, group->poly)) goto err;
|
| - if (BN_is_zero(x))
|
| - {
|
| - if (!BN_GF2m_mod_sqrt_arr(y, &group->b, group->poly, ctx)) goto err;
|
| - }
|
| - else
|
| - {
|
| - if (!group->meth->field_sqr(group, tmp, x, ctx)) goto err;
|
| - if (!group->meth->field_div(group, tmp, &group->b, tmp, ctx)) goto err;
|
| - if (!BN_GF2m_add(tmp, &group->a, tmp)) goto err;
|
| - if (!BN_GF2m_add(tmp, x, tmp)) goto err;
|
| - if (!BN_GF2m_mod_solve_quad_arr(z, tmp, group->poly, ctx))
|
| - {
|
| - unsigned long err = ERR_peek_last_error();
|
| -
|
| - if (ERR_GET_LIB(err) == ERR_LIB_BN && ERR_GET_REASON(err) == BN_R_NO_SOLUTION)
|
| - {
|
| - ERR_clear_error();
|
| - ECerr(EC_F_EC_GF2M_SIMPLE_SET_COMPRESSED_COORDINATES, EC_R_INVALID_COMPRESSED_POINT);
|
| - }
|
| - else
|
| - ECerr(EC_F_EC_GF2M_SIMPLE_SET_COMPRESSED_COORDINATES, ERR_R_BN_LIB);
|
| - goto err;
|
| - }
|
| - z0 = (BN_is_odd(z)) ? 1 : 0;
|
| - if (!group->meth->field_mul(group, y, x, z, ctx)) goto err;
|
| - if (z0 != y_bit)
|
| - {
|
| - if (!BN_GF2m_add(y, y, x)) goto err;
|
| - }
|
| - }
|
| -
|
| - if (!EC_POINT_set_affine_coordinates_GF2m(group, point, x, y, ctx)) goto err;
|
| -
|
| - ret = 1;
|
| -
|
| - err:
|
| - BN_CTX_end(ctx);
|
| - if (new_ctx != NULL)
|
| - BN_CTX_free(new_ctx);
|
| - return ret;
|
| -#endif
|
| - }
|
|
|