1 /* $OpenBSD: pk7_attr.c,v 1.12 2017/01/29 17:49:23 beck Exp $ */ 2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL 3 * project 2001. 4 */ 5 /* ==================================================================== 6 * Copyright (c) 2001-2004 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 <stdio.h> 60 #include <stdlib.h> 61 #include <openssl/bio.h> 62 #include <openssl/asn1.h> 63 #include <openssl/asn1t.h> 64 #include <openssl/pem.h> 65 #include <openssl/pkcs7.h> 66 #include <openssl/x509.h> 67 #include <openssl/err.h> 68 69 int 70 PKCS7_add_attrib_smimecap(PKCS7_SIGNER_INFO *si, STACK_OF(X509_ALGOR) *cap) 71 { 72 ASN1_STRING *seq; 73 if (!(seq = ASN1_STRING_new())) { 74 PKCS7error(ERR_R_MALLOC_FAILURE); 75 return 0; 76 } 77 seq->length = ASN1_item_i2d((ASN1_VALUE *)cap, &seq->data, 78 &X509_ALGORS_it); 79 return PKCS7_add_signed_attribute(si, NID_SMIMECapabilities, 80 V_ASN1_SEQUENCE, seq); 81 } 82 83 STACK_OF(X509_ALGOR) * 84 PKCS7_get_smimecap(PKCS7_SIGNER_INFO *si) 85 { 86 ASN1_TYPE *cap; 87 const unsigned char *p; 88 89 cap = PKCS7_get_signed_attribute(si, NID_SMIMECapabilities); 90 if (!cap || (cap->type != V_ASN1_SEQUENCE)) 91 return NULL; 92 p = cap->value.sequence->data; 93 return (STACK_OF(X509_ALGOR) *) 94 ASN1_item_d2i(NULL, &p, cap->value.sequence->length, 95 &X509_ALGORS_it); 96 } 97 98 /* Basic smime-capabilities OID and optional integer arg */ 99 int 100 PKCS7_simple_smimecap(STACK_OF(X509_ALGOR) *sk, int nid, int arg) 101 { 102 X509_ALGOR *alg; 103 104 if (!(alg = X509_ALGOR_new())) { 105 PKCS7error(ERR_R_MALLOC_FAILURE); 106 return 0; 107 } 108 ASN1_OBJECT_free(alg->algorithm); 109 alg->algorithm = OBJ_nid2obj(nid); 110 if (arg > 0) { 111 ASN1_INTEGER *nbit; 112 113 if (!(alg->parameter = ASN1_TYPE_new())) 114 goto err; 115 if (!(nbit = ASN1_INTEGER_new())) 116 goto err; 117 if (!ASN1_INTEGER_set(nbit, arg)) { 118 ASN1_INTEGER_free(nbit); 119 goto err; 120 } 121 alg->parameter->value.integer = nbit; 122 alg->parameter->type = V_ASN1_INTEGER; 123 } 124 if (sk_X509_ALGOR_push(sk, alg) == 0) 125 goto err; 126 return 1; 127 128 err: 129 PKCS7error(ERR_R_MALLOC_FAILURE); 130 X509_ALGOR_free(alg); 131 return 0; 132 } 133 134 int 135 PKCS7_add_attrib_content_type(PKCS7_SIGNER_INFO *si, ASN1_OBJECT *coid) 136 { 137 if (PKCS7_get_signed_attribute(si, NID_pkcs9_contentType)) 138 return 0; 139 if (!coid) 140 coid = OBJ_nid2obj(NID_pkcs7_data); 141 return PKCS7_add_signed_attribute(si, NID_pkcs9_contentType, 142 V_ASN1_OBJECT, coid); 143 } 144 145 int 146 PKCS7_add0_attrib_signing_time(PKCS7_SIGNER_INFO *si, ASN1_TIME *t) 147 { 148 if (!t && !(t = X509_gmtime_adj(NULL, 0))) { 149 PKCS7error(ERR_R_MALLOC_FAILURE); 150 return 0; 151 } 152 return PKCS7_add_signed_attribute(si, NID_pkcs9_signingTime, 153 V_ASN1_UTCTIME, t); 154 } 155 156 int 157 PKCS7_add1_attrib_digest(PKCS7_SIGNER_INFO *si, const unsigned char *md, 158 int mdlen) 159 { 160 ASN1_OCTET_STRING *os; 161 162 os = ASN1_OCTET_STRING_new(); 163 if (!os) 164 return 0; 165 if (!ASN1_STRING_set(os, md, mdlen) || 166 !PKCS7_add_signed_attribute(si, NID_pkcs9_messageDigest, 167 V_ASN1_OCTET_STRING, os)) { 168 ASN1_OCTET_STRING_free(os); 169 return 0; 170 } 171 return 1; 172 } 173