1 /* pk7_attr.c */ 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 PKCS7_add_attrib_smimecap(PKCS7_SIGNER_INFO *si, STACK_OF(X509_ALGOR) *cap) 70 { 71 ASN1_STRING *seq; 72 if(!(seq = ASN1_STRING_new())) { 73 PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP,ERR_R_MALLOC_FAILURE); 74 return 0; 75 } 76 seq->length = ASN1_item_i2d((ASN1_VALUE *)cap,&seq->data, 77 ASN1_ITEM_rptr(X509_ALGORS)); 78 return PKCS7_add_signed_attribute(si, NID_SMIMECapabilities, 79 V_ASN1_SEQUENCE, seq); 80 } 81 82 STACK_OF(X509_ALGOR) *PKCS7_get_smimecap(PKCS7_SIGNER_INFO *si) 83 { 84 ASN1_TYPE *cap; 85 const unsigned char *p; 86 87 cap = PKCS7_get_signed_attribute(si, NID_SMIMECapabilities); 88 if (!cap || (cap->type != V_ASN1_SEQUENCE)) 89 return NULL; 90 p = cap->value.sequence->data; 91 return (STACK_OF(X509_ALGOR) *) 92 ASN1_item_d2i(NULL, &p, cap->value.sequence->length, 93 ASN1_ITEM_rptr(X509_ALGORS)); 94 } 95 96 /* Basic smime-capabilities OID and optional integer arg */ 97 int PKCS7_simple_smimecap(STACK_OF(X509_ALGOR) *sk, int nid, int arg) 98 { 99 X509_ALGOR *alg; 100 101 if(!(alg = X509_ALGOR_new())) { 102 PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE); 103 return 0; 104 } 105 ASN1_OBJECT_free(alg->algorithm); 106 alg->algorithm = OBJ_nid2obj (nid); 107 if (arg > 0) { 108 ASN1_INTEGER *nbit; 109 if(!(alg->parameter = ASN1_TYPE_new())) { 110 PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE); 111 return 0; 112 } 113 if(!(nbit = ASN1_INTEGER_new())) { 114 PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE); 115 return 0; 116 } 117 if(!ASN1_INTEGER_set (nbit, arg)) { 118 PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP,ERR_R_MALLOC_FAILURE); 119 return 0; 120 } 121 alg->parameter->value.integer = nbit; 122 alg->parameter->type = V_ASN1_INTEGER; 123 } 124 sk_X509_ALGOR_push (sk, alg); 125 return 1; 126 } 127 128 int PKCS7_add_attrib_content_type(PKCS7_SIGNER_INFO *si, ASN1_OBJECT *coid) 129 { 130 if (PKCS7_get_signed_attribute(si, NID_pkcs9_contentType)) 131 return 0; 132 if (!coid) 133 coid = OBJ_nid2obj(NID_pkcs7_data); 134 return PKCS7_add_signed_attribute(si, NID_pkcs9_contentType, 135 V_ASN1_OBJECT, coid); 136 } 137 138 int PKCS7_add0_attrib_signing_time(PKCS7_SIGNER_INFO *si, ASN1_TIME *t) 139 { 140 if (!t && !(t=X509_gmtime_adj(NULL,0))) 141 { 142 PKCS7err(PKCS7_F_PKCS7_ADD0_ATTRIB_SIGNING_TIME, 143 ERR_R_MALLOC_FAILURE); 144 return 0; 145 } 146 return PKCS7_add_signed_attribute(si, NID_pkcs9_signingTime, 147 V_ASN1_UTCTIME, t); 148 } 149 150 int PKCS7_add1_attrib_digest(PKCS7_SIGNER_INFO *si, 151 const unsigned char *md, int mdlen) 152 { 153 ASN1_OCTET_STRING *os; 154 os = ASN1_OCTET_STRING_new(); 155 if (!os) 156 return 0; 157 if (!ASN1_STRING_set(os, md, mdlen) 158 || !PKCS7_add_signed_attribute(si, NID_pkcs9_messageDigest, 159 V_ASN1_OCTET_STRING, os)) 160 { 161 ASN1_OCTET_STRING_free(os); 162 return 0; 163 } 164 return 1; 165 } 166