195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley/* Originally written by Bodo Moeller for the OpenSSL project. 295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * ==================================================================== 395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved. 495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * Redistribution and use in source and binary forms, with or without 695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * modification, are permitted provided that the following conditions 795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * are met: 895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 1. Redistributions of source code must retain the above copyright 1095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * notice, this list of conditions and the following disclaimer. 1195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 1295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 2. Redistributions in binary form must reproduce the above copyright 1395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * notice, this list of conditions and the following disclaimer in 1495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * the documentation and/or other materials provided with the 1595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * distribution. 1695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 1795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 3. All advertising materials mentioning features or use of this 1895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * software must display the following acknowledgment: 1995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * "This product includes software developed by the OpenSSL Project 2095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 2195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 2295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 2395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * endorse or promote products derived from this software without 2495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * prior written permission. For written permission, please contact 2595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * openssl-core@openssl.org. 2695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 2795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 5. Products derived from this software may not be called "OpenSSL" 2895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * nor may "OpenSSL" appear in their names without prior written 2995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * permission of the OpenSSL Project. 3095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 3195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 6. Redistributions of any form whatsoever must retain the following 3295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * acknowledgment: 3395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * "This product includes software developed by the OpenSSL Project 3495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 3595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 3695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 3795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 3895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 3995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 4095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 4195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 4295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 4395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 4595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 4695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 4795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * OF THE POSSIBILITY OF SUCH DAMAGE. 4895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * ==================================================================== 4995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 5095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * This product includes cryptographic software written by Eric Young 5195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * (eay@cryptsoft.com). This product includes software written by Tim 5295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * Hudson (tjh@cryptsoft.com). 5395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 5495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley */ 5595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley/* ==================================================================== 5695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. 5795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 5895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * Portions of the attached software ("Contribution") are developed by 5995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project. 6095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 6195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * The Contribution is licensed pursuant to the OpenSSL open source 6295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * license provided above. 6395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * 6495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * The elliptic curve binary polynomial software is originally written by 6595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems 6695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley * Laboratories. */ 6795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 6895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley#include <stdio.h> 6995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 7095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley#include <openssl/bn.h> 71a70c75cfc0ca32a43985e3f24d737ca9cafcb910David Benjamin#include <openssl/crypto.h> 7295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley#include <openssl/ec.h> 7395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley#include <openssl/obj.h> 7495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 7595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 76c44d2f4cb8a892a603edbbe710fa82bcd30f9cb5David Benjaminint example_EC_POINT_mul(void) { 7795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley /* This example ensures that 10×∞ + G = G, in P-256. */ 7895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley EC_GROUP *group = NULL; 7995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley EC_POINT *p = NULL, *result = NULL; 8095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley BIGNUM *n = NULL; 8195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley int ret = 0; 8295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley const EC_POINT *generator; 8395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 8495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley group = EC_GROUP_new_by_curve_name(NID_X9_62_prime256v1); 8595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley p = EC_POINT_new(group); 8695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley result = EC_POINT_new(group); 8795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley n = BN_new(); 8895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 8995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley if (p == NULL || 9095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley result == NULL || 9195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley group == NULL || 9295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley n == NULL || 9395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley !EC_POINT_set_to_infinity(group, p) || 9495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley !BN_set_word(n, 10)) { 9595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley goto err; 9695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley } 9795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 9895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley /* First check that 10×∞ = ∞. */ 9995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley if (!EC_POINT_mul(group, result, NULL, p, n, NULL) || 10095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley !EC_POINT_is_at_infinity(group, result)) { 10195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley goto err; 10295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley } 10395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 10495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley generator = EC_GROUP_get0_generator(group); 10595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 10695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley /* Now check that 10×∞ + G = G. */ 10795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley if (!EC_POINT_mul(group, result, BN_value_one(), p, n, NULL) || 10895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley EC_POINT_cmp(group, result, generator, NULL) != 0) { 10995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley goto err; 11095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley } 11195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 11295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley ret = 1; 11395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 11495c29f3cd1f6c08c6c0927868683392eea727ccAdam Langleyerr: 11595c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley BN_free(n); 11695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley EC_POINT_free(result); 11795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley EC_POINT_free(p); 11895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley EC_GROUP_free(group); 11995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 12095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley return ret; 12195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley} 12295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 123c44d2f4cb8a892a603edbbe710fa82bcd30f9cb5David Benjaminint main(void) { 124a70c75cfc0ca32a43985e3f24d737ca9cafcb910David Benjamin CRYPTO_library_init(); 125a70c75cfc0ca32a43985e3f24d737ca9cafcb910David Benjamin 12695c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley if (!example_EC_POINT_mul()) { 12795c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley fprintf(stderr, "failed\n"); 12895c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley return 1; 12995c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley } 13095c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley 13195c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley printf("PASS\n"); 13295c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley return 0; 13395c29f3cd1f6c08c6c0927868683392eea727ccAdam Langley} 134