1 /* $OpenBSD: x_algor.c,v 1.14 2015/02/09 15:05:59 jsing Exp $ */ 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 3 * project 2000. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 2000 The OpenSSL Project. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. All advertising materials mentioning features or use of this 21 * software must display the following acknowledgment: 22 * "This product includes software developed by the OpenSSL Project 23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 24 * 25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 26 * endorse or promote products derived from this software without 27 * prior written permission. For written permission, please contact 28 * licensing@OpenSSL.org. 29 * 30 * 5. Products derived from this software may not be called "OpenSSL" 31 * nor may "OpenSSL" appear in their names without prior written 32 * permission of the OpenSSL Project. 33 * 34 * 6. Redistributions of any form whatsoever must retain the following 35 * acknowledgment: 36 * "This product includes software developed by the OpenSSL Project 37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 38 * 39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 50 * OF THE POSSIBILITY OF SUCH DAMAGE. 51 * ==================================================================== 52 * 53 * This product includes cryptographic software written by Eric Young 54 * (eay@cryptsoft.com). This product includes software written by Tim 55 * Hudson (tjh@cryptsoft.com). 56 * 57 */ 58 59 #include <stddef.h> 60 #include <openssl/x509.h> 61 #include <openssl/asn1.h> 62 #include <openssl/asn1t.h> 63 64 ASN1_SEQUENCE(X509_ALGOR) = { 65 ASN1_SIMPLE(X509_ALGOR, algorithm, ASN1_OBJECT), 66 ASN1_OPT(X509_ALGOR, parameter, ASN1_ANY) 67 } ASN1_SEQUENCE_END(X509_ALGOR) 68 69 ASN1_ITEM_TEMPLATE(X509_ALGORS) = 70 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, algorithms, X509_ALGOR) 71 ASN1_ITEM_TEMPLATE_END(X509_ALGORS) 72 73 74 X509_ALGOR * 75 d2i_X509_ALGOR(X509_ALGOR **a, const unsigned char **in, long len) 76 { 77 return (X509_ALGOR *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, 78 &X509_ALGOR_it); 79 } 80 81 int 82 i2d_X509_ALGOR(X509_ALGOR *a, unsigned char **out) 83 { 84 return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_ALGOR_it); 85 } 86 87 X509_ALGOR * 88 X509_ALGOR_new(void) 89 { 90 return (X509_ALGOR *)ASN1_item_new(&X509_ALGOR_it); 91 } 92 93 void 94 X509_ALGOR_free(X509_ALGOR *a) 95 { 96 ASN1_item_free((ASN1_VALUE *)a, &X509_ALGOR_it); 97 } 98 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(X509_ALGORS, X509_ALGORS, X509_ALGORS) 99 IMPLEMENT_ASN1_DUP_FUNCTION(X509_ALGOR) 100 101 IMPLEMENT_STACK_OF(X509_ALGOR) 102 IMPLEMENT_ASN1_SET_OF(X509_ALGOR) 103 104 int 105 X509_ALGOR_set0(X509_ALGOR *alg, ASN1_OBJECT *aobj, int ptype, void *pval) 106 { 107 if (!alg) 108 return 0; 109 if (ptype != V_ASN1_UNDEF) { 110 if (alg->parameter == NULL) 111 alg->parameter = ASN1_TYPE_new(); 112 if (alg->parameter == NULL) 113 return 0; 114 } 115 if (alg) { 116 if (alg->algorithm) 117 ASN1_OBJECT_free(alg->algorithm); 118 alg->algorithm = aobj; 119 } 120 if (ptype == 0) 121 return 1; 122 if (ptype == V_ASN1_UNDEF) { 123 if (alg->parameter) { 124 ASN1_TYPE_free(alg->parameter); 125 alg->parameter = NULL; 126 } 127 } else 128 ASN1_TYPE_set(alg->parameter, ptype, pval); 129 return 1; 130 } 131 132 void 133 X509_ALGOR_get0(ASN1_OBJECT **paobj, int *pptype, void **ppval, 134 X509_ALGOR *algor) 135 { 136 if (paobj) 137 *paobj = algor->algorithm; 138 if (pptype) { 139 if (algor->parameter == NULL) { 140 *pptype = V_ASN1_UNDEF; 141 return; 142 } else 143 *pptype = algor->parameter->type; 144 if (ppval) 145 *ppval = algor->parameter->value.ptr; 146 } 147 } 148 149 /* Set up an X509_ALGOR DigestAlgorithmIdentifier from an EVP_MD */ 150 151 void 152 X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md) 153 { 154 int param_type; 155 156 if (md->flags & EVP_MD_FLAG_DIGALGID_ABSENT) 157 param_type = V_ASN1_UNDEF; 158 else 159 param_type = V_ASN1_NULL; 160 161 X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_MD_type(md)), param_type, NULL); 162 } 163 164 /* Returns 0 if they are equal, != 0 otherwise. */ 165 int 166 X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b) 167 { 168 int rv = OBJ_cmp(a->algorithm, b->algorithm); 169 if (!rv) { 170 if (!a->parameter && !b->parameter) 171 rv = 0; 172 else 173 rv = ASN1_TYPE_cmp(a->parameter, b->parameter); 174 } 175 return(rv); 176 } 177