1/* x_algor.c */ 2/* 3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project 4 * 2000. 5 */ 6/* ==================================================================== 7 * Copyright (c) 2000 The OpenSSL Project. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. All advertising materials mentioning features or use of this 22 * software must display the following acknowledgment: 23 * "This product includes software developed by the OpenSSL Project 24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 25 * 26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 27 * endorse or promote products derived from this software without 28 * prior written permission. For written permission, please contact 29 * licensing@OpenSSL.org. 30 * 31 * 5. Products derived from this software may not be called "OpenSSL" 32 * nor may "OpenSSL" appear in their names without prior written 33 * permission of the OpenSSL Project. 34 * 35 * 6. Redistributions of any form whatsoever must retain the following 36 * acknowledgment: 37 * "This product includes software developed by the OpenSSL Project 38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 51 * OF THE POSSIBILITY OF SUCH DAMAGE. 52 * ==================================================================== 53 * 54 * This product includes cryptographic software written by Eric Young 55 * (eay@cryptsoft.com). This product includes software written by Tim 56 * Hudson (tjh@cryptsoft.com). 57 * 58 */ 59 60#include <stddef.h> 61#include <openssl/x509.h> 62#include <openssl/asn1.h> 63#include <openssl/asn1t.h> 64 65ASN1_SEQUENCE(X509_ALGOR) = { 66 ASN1_SIMPLE(X509_ALGOR, algorithm, ASN1_OBJECT), 67 ASN1_OPT(X509_ALGOR, parameter, ASN1_ANY) 68} ASN1_SEQUENCE_END(X509_ALGOR) 69 70ASN1_ITEM_TEMPLATE(X509_ALGORS) = 71 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, algorithms, X509_ALGOR) 72ASN1_ITEM_TEMPLATE_END(X509_ALGORS) 73 74IMPLEMENT_ASN1_FUNCTIONS(X509_ALGOR) 75IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(X509_ALGORS, X509_ALGORS, X509_ALGORS) 76IMPLEMENT_ASN1_DUP_FUNCTION(X509_ALGOR) 77 78IMPLEMENT_STACK_OF(X509_ALGOR) 79IMPLEMENT_ASN1_SET_OF(X509_ALGOR) 80 81int X509_ALGOR_set0(X509_ALGOR *alg, ASN1_OBJECT *aobj, int ptype, void *pval) 82{ 83 if (!alg) 84 return 0; 85 if (ptype != V_ASN1_UNDEF) { 86 if (alg->parameter == NULL) 87 alg->parameter = ASN1_TYPE_new(); 88 if (alg->parameter == NULL) 89 return 0; 90 } 91 if (alg) { 92 if (alg->algorithm) 93 ASN1_OBJECT_free(alg->algorithm); 94 alg->algorithm = aobj; 95 } 96 if (ptype == 0) 97 return 1; 98 if (ptype == V_ASN1_UNDEF) { 99 if (alg->parameter) { 100 ASN1_TYPE_free(alg->parameter); 101 alg->parameter = NULL; 102 } 103 } else 104 ASN1_TYPE_set(alg->parameter, ptype, pval); 105 return 1; 106} 107 108void X509_ALGOR_get0(ASN1_OBJECT **paobj, int *pptype, void **ppval, 109 X509_ALGOR *algor) 110{ 111 if (paobj) 112 *paobj = algor->algorithm; 113 if (pptype) { 114 if (algor->parameter == NULL) { 115 *pptype = V_ASN1_UNDEF; 116 return; 117 } else 118 *pptype = algor->parameter->type; 119 if (ppval) 120 *ppval = algor->parameter->value.ptr; 121 } 122} 123 124/* Set up an X509_ALGOR DigestAlgorithmIdentifier from an EVP_MD */ 125 126void X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md) 127{ 128 int param_type; 129 130 if (md->flags & EVP_MD_FLAG_DIGALGID_ABSENT) 131 param_type = V_ASN1_UNDEF; 132 else 133 param_type = V_ASN1_NULL; 134 135 X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_MD_type(md)), param_type, NULL); 136 137} 138 139int X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b) 140{ 141 int rv; 142 rv = OBJ_cmp(a->algorithm, b->algorithm); 143 if (rv) 144 return rv; 145 if (!a->parameter && !b->parameter) 146 return 0; 147 return ASN1_TYPE_cmp(a->parameter, b->parameter); 148} 149