diff options
Diffstat (limited to 'openssl/crypto/ec/ec_check.c')
| -rw-r--r-- | openssl/crypto/ec/ec_check.c | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/openssl/crypto/ec/ec_check.c b/openssl/crypto/ec/ec_check.c deleted file mode 100644 index 0e316b4b..00000000 --- a/openssl/crypto/ec/ec_check.c +++ /dev/null @@ -1,123 +0,0 @@ -/* crypto/ec/ec_check.c */ -/* ==================================================================== - * 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). - * - */ - -#include "ec_lcl.h" -#include <openssl/err.h> - -int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx) - { - int ret = 0; - BIGNUM *order; - BN_CTX *new_ctx = NULL; - EC_POINT *point = NULL; - - if (ctx == NULL) - { - ctx = new_ctx = BN_CTX_new(); - if (ctx == NULL) - { - ECerr(EC_F_EC_GROUP_CHECK, ERR_R_MALLOC_FAILURE); - goto err; - } - } - BN_CTX_start(ctx); - if ((order = BN_CTX_get(ctx)) == NULL) goto err; - - /* check the discriminant */ - if (!EC_GROUP_check_discriminant(group, ctx)) - { - ECerr(EC_F_EC_GROUP_CHECK, EC_R_DISCRIMINANT_IS_ZERO); - goto err; - } - - /* check the generator */ - if (group->generator == NULL) - { - ECerr(EC_F_EC_GROUP_CHECK, EC_R_UNDEFINED_GENERATOR); - goto err; - } - if (!EC_POINT_is_on_curve(group, group->generator, ctx)) - { - ECerr(EC_F_EC_GROUP_CHECK, EC_R_POINT_IS_NOT_ON_CURVE); - goto err; - } - - /* check the order of the generator */ - if ((point = EC_POINT_new(group)) == NULL) goto err; - if (!EC_GROUP_get_order(group, order, ctx)) goto err; - if (BN_is_zero(order)) - { - ECerr(EC_F_EC_GROUP_CHECK, EC_R_UNDEFINED_ORDER); - goto err; - } - - if (!EC_POINT_mul(group, point, order, NULL, NULL, ctx)) goto err; - if (!EC_POINT_is_at_infinity(group, point)) - { - ECerr(EC_F_EC_GROUP_CHECK, EC_R_INVALID_GROUP_ORDER); - goto err; - } - - ret = 1; - -err: - if (ctx != NULL) - BN_CTX_end(ctx); - if (new_ctx != NULL) - BN_CTX_free(new_ctx); - if (point) - EC_POINT_free(point); - return ret; - } |