1 /* $OpenBSD: x_algor.c,v 1.20 2015/02/11 04:00:39 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 static const ASN1_TEMPLATE X509_ALGOR_seq_tt[] = { 65 { 66 .offset = offsetof(X509_ALGOR, algorithm), 67 .field_name = "algorithm", 68 .item = &ASN1_OBJECT_it, 69 }, 70 { 71 .flags = ASN1_TFLG_OPTIONAL, 72 .offset = offsetof(X509_ALGOR, parameter), 73 .field_name = "parameter", 74 .item = &ASN1_ANY_it, 75 }, 76 }; 77 78 const ASN1_ITEM X509_ALGOR_it = { 79 .itype = ASN1_ITYPE_SEQUENCE, 80 .utype = V_ASN1_SEQUENCE, 81 .templates = X509_ALGOR_seq_tt, 82 .tcount = sizeof(X509_ALGOR_seq_tt) / sizeof(ASN1_TEMPLATE), 83 .size = sizeof(X509_ALGOR), 84 .sname = "X509_ALGOR", 85 }; 86 87 ASN1_ITEM_TEMPLATE(X509_ALGORS) = 88 ASN1_EX_TEMPLATE_TYPE(ASN1_TFLG_SEQUENCE_OF, 0, algorithms, X509_ALGOR) 89 ASN1_ITEM_TEMPLATE_END(X509_ALGORS) 90 91 92 X509_ALGOR * 93 d2i_X509_ALGOR(X509_ALGOR **a, const unsigned char **in, long len) 94 { 95 return (X509_ALGOR *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, 96 &X509_ALGOR_it); 97 } 98 99 int 100 i2d_X509_ALGOR(X509_ALGOR *a, unsigned char **out) 101 { 102 return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_ALGOR_it); 103 } 104 105 X509_ALGOR * 106 X509_ALGOR_new(void) 107 { 108 return (X509_ALGOR *)ASN1_item_new(&X509_ALGOR_it); 109 } 110 111 void 112 X509_ALGOR_free(X509_ALGOR *a) 113 { 114 ASN1_item_free((ASN1_VALUE *)a, &X509_ALGOR_it); 115 } 116 117 X509_ALGORS * 118 d2i_X509_ALGORS(X509_ALGORS **a, const unsigned char **in, long len) 119 { 120 return (X509_ALGORS *)ASN1_item_d2i((ASN1_VALUE **)a, in, len, 121 &X509_ALGORS_it); 122 } 123 124 int 125 i2d_X509_ALGORS(X509_ALGORS *a, unsigned char **out) 126 { 127 return ASN1_item_i2d((ASN1_VALUE *)a, out, &X509_ALGORS_it); 128 } 129 130 X509_ALGOR * 131 X509_ALGOR_dup(X509_ALGOR *x) 132 { 133 return ASN1_item_dup(&X509_ALGOR_it, x); 134 } 135 136 int 137 X509_ALGOR_set0(X509_ALGOR *alg, ASN1_OBJECT *aobj, int ptype, void *pval) 138 { 139 if (!alg) 140 return 0; 141 if (ptype != V_ASN1_UNDEF) { 142 if (alg->parameter == NULL) 143 alg->parameter = ASN1_TYPE_new(); 144 if (alg->parameter == NULL) 145 return 0; 146 } 147 if (alg) { 148 if (alg->algorithm) 149 ASN1_OBJECT_free(alg->algorithm); 150 alg->algorithm = aobj; 151 } 152 if (ptype == 0) 153 return 1; 154 if (ptype == V_ASN1_UNDEF) { 155 if (alg->parameter) { 156 ASN1_TYPE_free(alg->parameter); 157 alg->parameter = NULL; 158 } 159 } else 160 ASN1_TYPE_set(alg->parameter, ptype, pval); 161 return 1; 162 } 163 164 void 165 X509_ALGOR_get0(ASN1_OBJECT **paobj, int *pptype, void **ppval, 166 X509_ALGOR *algor) 167 { 168 if (paobj) 169 *paobj = algor->algorithm; 170 if (pptype) { 171 if (algor->parameter == NULL) { 172 *pptype = V_ASN1_UNDEF; 173 return; 174 } else 175 *pptype = algor->parameter->type; 176 if (ppval) 177 *ppval = algor->parameter->value.ptr; 178 } 179 } 180 181 /* Set up an X509_ALGOR DigestAlgorithmIdentifier from an EVP_MD */ 182 183 void 184 X509_ALGOR_set_md(X509_ALGOR *alg, const EVP_MD *md) 185 { 186 int param_type; 187 188 if (md->flags & EVP_MD_FLAG_DIGALGID_ABSENT) 189 param_type = V_ASN1_UNDEF; 190 else 191 param_type = V_ASN1_NULL; 192 193 X509_ALGOR_set0(alg, OBJ_nid2obj(EVP_MD_type(md)), param_type, NULL); 194 } 195 196 /* Returns 0 if they are equal, != 0 otherwise. */ 197 int 198 X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b) 199 { 200 int rv = OBJ_cmp(a->algorithm, b->algorithm); 201 if (!rv) { 202 if (!a->parameter && !b->parameter) 203 rv = 0; 204 else 205 rv = ASN1_TYPE_cmp(a->parameter, b->parameter); 206 } 207 return(rv); 208 } 209