1/* pk7_attr.c */ 2/* 3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project 4 * 2001. 5 */ 6/* ==================================================================== 7 * Copyright (c) 2001-2004 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 <stdio.h> 61#include <stdlib.h> 62#include <openssl/bio.h> 63#include <openssl/asn1.h> 64#include <openssl/asn1t.h> 65#include <openssl/pem.h> 66#include <openssl/pkcs7.h> 67#include <openssl/x509.h> 68#include <openssl/err.h> 69 70int PKCS7_add_attrib_smimecap(PKCS7_SIGNER_INFO *si, 71 STACK_OF(X509_ALGOR) *cap) 72{ 73 ASN1_STRING *seq; 74 if (!(seq = ASN1_STRING_new())) { 75 PKCS7err(PKCS7_F_PKCS7_ADD_ATTRIB_SMIMECAP, ERR_R_MALLOC_FAILURE); 76 return 0; 77 } 78 seq->length = ASN1_item_i2d((ASN1_VALUE *)cap, &seq->data, 79 ASN1_ITEM_rptr(X509_ALGORS)); 80 return PKCS7_add_signed_attribute(si, NID_SMIMECapabilities, 81 V_ASN1_SEQUENCE, seq); 82} 83 84STACK_OF(X509_ALGOR) *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 ASN1_ITEM_rptr(X509_ALGORS)); 96} 97 98/* Basic smime-capabilities OID and optional integer arg */ 99int PKCS7_simple_smimecap(STACK_OF(X509_ALGOR) *sk, int nid, int arg) 100{ 101 X509_ALGOR *alg; 102 103 if (!(alg = X509_ALGOR_new())) { 104 PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE); 105 return 0; 106 } 107 ASN1_OBJECT_free(alg->algorithm); 108 alg->algorithm = OBJ_nid2obj(nid); 109 if (arg > 0) { 110 ASN1_INTEGER *nbit; 111 if (!(alg->parameter = ASN1_TYPE_new())) { 112 PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE); 113 return 0; 114 } 115 if (!(nbit = ASN1_INTEGER_new())) { 116 PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE); 117 return 0; 118 } 119 if (!ASN1_INTEGER_set(nbit, arg)) { 120 PKCS7err(PKCS7_F_PKCS7_SIMPLE_SMIMECAP, ERR_R_MALLOC_FAILURE); 121 return 0; 122 } 123 alg->parameter->value.integer = nbit; 124 alg->parameter->type = V_ASN1_INTEGER; 125 } 126 sk_X509_ALGOR_push(sk, alg); 127 return 1; 128} 129 130int PKCS7_add_attrib_content_type(PKCS7_SIGNER_INFO *si, ASN1_OBJECT *coid) 131{ 132 if (PKCS7_get_signed_attribute(si, NID_pkcs9_contentType)) 133 return 0; 134 if (!coid) 135 coid = OBJ_nid2obj(NID_pkcs7_data); 136 return PKCS7_add_signed_attribute(si, NID_pkcs9_contentType, 137 V_ASN1_OBJECT, coid); 138} 139 140int PKCS7_add0_attrib_signing_time(PKCS7_SIGNER_INFO *si, ASN1_TIME *t) 141{ 142 if (!t && !(t = X509_gmtime_adj(NULL, 0))) { 143 PKCS7err(PKCS7_F_PKCS7_ADD0_ATTRIB_SIGNING_TIME, 144 ERR_R_MALLOC_FAILURE); 145 return 0; 146 } 147 return PKCS7_add_signed_attribute(si, NID_pkcs9_signingTime, 148 V_ASN1_UTCTIME, t); 149} 150 151int PKCS7_add1_attrib_digest(PKCS7_SIGNER_INFO *si, 152 const unsigned char *md, int mdlen) 153{ 154 ASN1_OCTET_STRING *os; 155 os = ASN1_OCTET_STRING_new(); 156 if (!os) 157 return 0; 158 if (!ASN1_STRING_set(os, md, mdlen) 159 || !PKCS7_add_signed_attribute(si, NID_pkcs9_messageDigest, 160 V_ASN1_OCTET_STRING, os)) { 161 ASN1_OCTET_STRING_free(os); 162 return 0; 163 } 164 return 1; 165} 166