1109998Smarkm/* dh_asn1.c */ 2280304Sjkim/* 3280304Sjkim * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project 4280304Sjkim * 2000. 5109998Smarkm */ 6109998Smarkm/* ==================================================================== 7238405Sjkim * Copyright (c) 2000-2005 The OpenSSL Project. All rights reserved. 8109998Smarkm * 9109998Smarkm * Redistribution and use in source and binary forms, with or without 10109998Smarkm * modification, are permitted provided that the following conditions 11109998Smarkm * are met: 12109998Smarkm * 13109998Smarkm * 1. Redistributions of source code must retain the above copyright 14280304Sjkim * notice, this list of conditions and the following disclaimer. 15109998Smarkm * 16109998Smarkm * 2. Redistributions in binary form must reproduce the above copyright 17109998Smarkm * notice, this list of conditions and the following disclaimer in 18109998Smarkm * the documentation and/or other materials provided with the 19109998Smarkm * distribution. 20109998Smarkm * 21109998Smarkm * 3. All advertising materials mentioning features or use of this 22109998Smarkm * software must display the following acknowledgment: 23109998Smarkm * "This product includes software developed by the OpenSSL Project 24109998Smarkm * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 25109998Smarkm * 26109998Smarkm * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 27109998Smarkm * endorse or promote products derived from this software without 28109998Smarkm * prior written permission. For written permission, please contact 29109998Smarkm * licensing@OpenSSL.org. 30109998Smarkm * 31109998Smarkm * 5. Products derived from this software may not be called "OpenSSL" 32109998Smarkm * nor may "OpenSSL" appear in their names without prior written 33109998Smarkm * permission of the OpenSSL Project. 34109998Smarkm * 35109998Smarkm * 6. Redistributions of any form whatsoever must retain the following 36109998Smarkm * acknowledgment: 37109998Smarkm * "This product includes software developed by the OpenSSL Project 38109998Smarkm * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 39109998Smarkm * 40109998Smarkm * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 41109998Smarkm * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42109998Smarkm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 43109998Smarkm * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 44109998Smarkm * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45109998Smarkm * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46109998Smarkm * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 47109998Smarkm * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48109998Smarkm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 49109998Smarkm * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 50109998Smarkm * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 51109998Smarkm * OF THE POSSIBILITY OF SUCH DAMAGE. 52109998Smarkm * ==================================================================== 53109998Smarkm * 54109998Smarkm * This product includes cryptographic software written by Eric Young 55109998Smarkm * (eay@cryptsoft.com). This product includes software written by Tim 56109998Smarkm * Hudson (tjh@cryptsoft.com). 57109998Smarkm * 58109998Smarkm */ 59109998Smarkm 60109998Smarkm#include <stdio.h> 61109998Smarkm#include "cryptlib.h" 62109998Smarkm#include <openssl/bn.h> 63109998Smarkm#include <openssl/dh.h> 64109998Smarkm#include <openssl/objects.h> 65109998Smarkm#include <openssl/asn1t.h> 66109998Smarkm 67109998Smarkm/* Override the default free and new methods */ 68238405Sjkimstatic int dh_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it, 69280304Sjkim void *exarg) 70109998Smarkm{ 71280304Sjkim if (operation == ASN1_OP_NEW_PRE) { 72280304Sjkim *pval = (ASN1_VALUE *)DH_new(); 73280304Sjkim if (*pval) 74280304Sjkim return 2; 75280304Sjkim return 0; 76280304Sjkim } else if (operation == ASN1_OP_FREE_PRE) { 77280304Sjkim DH_free((DH *)*pval); 78280304Sjkim *pval = NULL; 79280304Sjkim return 2; 80280304Sjkim } 81280304Sjkim return 1; 82109998Smarkm} 83109998Smarkm 84109998SmarkmASN1_SEQUENCE_cb(DHparams, dh_cb) = { 85280304Sjkim ASN1_SIMPLE(DH, p, BIGNUM), 86280304Sjkim ASN1_SIMPLE(DH, g, BIGNUM), 87280304Sjkim ASN1_OPT(DH, length, ZLONG), 88109998Smarkm} ASN1_SEQUENCE_END_cb(DH, DHparams) 89109998Smarkm 90109998SmarkmIMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(DH, DHparams, DHparams) 91238405Sjkim 92238405SjkimDH *DHparams_dup(DH *dh) 93280304Sjkim{ 94280304Sjkim return ASN1_item_dup(ASN1_ITEM_rptr(DHparams), dh); 95280304Sjkim} 96