1*0Sstevel@tonic-gate /* crypto/ec/ec_cvt.c */ 2*0Sstevel@tonic-gate /* ==================================================================== 3*0Sstevel@tonic-gate * Copyright (c) 1998-2001 The OpenSSL Project. All rights reserved. 4*0Sstevel@tonic-gate * 5*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without 6*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions 7*0Sstevel@tonic-gate * are met: 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the above copyright 10*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer. 11*0Sstevel@tonic-gate * 12*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright 13*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in 14*0Sstevel@tonic-gate * the documentation and/or other materials provided with the 15*0Sstevel@tonic-gate * distribution. 16*0Sstevel@tonic-gate * 17*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this 18*0Sstevel@tonic-gate * software must display the following acknowledgment: 19*0Sstevel@tonic-gate * "This product includes software developed by the OpenSSL Project 20*0Sstevel@tonic-gate * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 21*0Sstevel@tonic-gate * 22*0Sstevel@tonic-gate * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 23*0Sstevel@tonic-gate * endorse or promote products derived from this software without 24*0Sstevel@tonic-gate * prior written permission. For written permission, please contact 25*0Sstevel@tonic-gate * openssl-core@openssl.org. 26*0Sstevel@tonic-gate * 27*0Sstevel@tonic-gate * 5. Products derived from this software may not be called "OpenSSL" 28*0Sstevel@tonic-gate * nor may "OpenSSL" appear in their names without prior written 29*0Sstevel@tonic-gate * permission of the OpenSSL Project. 30*0Sstevel@tonic-gate * 31*0Sstevel@tonic-gate * 6. Redistributions of any form whatsoever must retain the following 32*0Sstevel@tonic-gate * acknowledgment: 33*0Sstevel@tonic-gate * "This product includes software developed by the OpenSSL Project 34*0Sstevel@tonic-gate * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 35*0Sstevel@tonic-gate * 36*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 37*0Sstevel@tonic-gate * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 38*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 39*0Sstevel@tonic-gate * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 40*0Sstevel@tonic-gate * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 41*0Sstevel@tonic-gate * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 42*0Sstevel@tonic-gate * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 43*0Sstevel@tonic-gate * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 44*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 45*0Sstevel@tonic-gate * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 46*0Sstevel@tonic-gate * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 47*0Sstevel@tonic-gate * OF THE POSSIBILITY OF SUCH DAMAGE. 48*0Sstevel@tonic-gate * ==================================================================== 49*0Sstevel@tonic-gate * 50*0Sstevel@tonic-gate * This product includes cryptographic software written by Eric Young 51*0Sstevel@tonic-gate * (eay@cryptsoft.com). This product includes software written by Tim 52*0Sstevel@tonic-gate * Hudson (tjh@cryptsoft.com). 53*0Sstevel@tonic-gate * 54*0Sstevel@tonic-gate */ 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate #include "ec_lcl.h" 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate EC_GROUP *EC_GROUP_new_curve_GFp(const BIGNUM *p, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) 60*0Sstevel@tonic-gate { 61*0Sstevel@tonic-gate const EC_METHOD *meth; 62*0Sstevel@tonic-gate EC_GROUP *ret; 63*0Sstevel@tonic-gate 64*0Sstevel@tonic-gate /* Finally, this will use EC_GFp_nist_method if 'p' is a special 65*0Sstevel@tonic-gate * prime with optimized modular arithmetics (for NIST curves) 66*0Sstevel@tonic-gate */ 67*0Sstevel@tonic-gate meth = EC_GFp_mont_method(); 68*0Sstevel@tonic-gate 69*0Sstevel@tonic-gate ret = EC_GROUP_new(meth); 70*0Sstevel@tonic-gate if (ret == NULL) 71*0Sstevel@tonic-gate return NULL; 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate if (!EC_GROUP_set_curve_GFp(ret, p, a, b, ctx)) 74*0Sstevel@tonic-gate { 75*0Sstevel@tonic-gate EC_GROUP_clear_free(ret); 76*0Sstevel@tonic-gate return NULL; 77*0Sstevel@tonic-gate } 78*0Sstevel@tonic-gate 79*0Sstevel@tonic-gate return ret; 80*0Sstevel@tonic-gate } 81