/* $OpenBSD: pk7_attr.c,v 1.22 2025/07/31 02:24:21 tb Exp $ */ /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL * project 2001. */ /* ==================================================================== * Copyright (c) 2001-2004 The OpenSSL Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. All advertising materials mentioning features or use of this * software must display the following acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" * * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to * endorse or promote products derived from this software without * prior written permission. For written permission, please contact * licensing@OpenSSL.org. * * 5. Products derived from this software may not be called "OpenSSL" * nor may "OpenSSL" appear in their names without prior written * permission of the OpenSSL Project. * * 6. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" * * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * This product includes cryptographic software written by Eric Young * (eay@cryptsoft.com). This product includes software written by Tim * Hudson (tjh@cryptsoft.com). * */ #include #include #include #include #include #include "asn1_local.h" #include "err_local.h" #include "x509_local.h" int PKCS7_add_attrib_smimecap(PKCS7_SIGNER_INFO *si, STACK_OF(X509_ALGOR) *cap) { ASN1_STRING *seq = NULL; unsigned char *data = NULL; int len = 0; int ret = 0; if ((len = i2d_X509_ALGORS(cap, &data)) <= 0) { len = 0; goto err; } if ((seq = ASN1_STRING_new()) == NULL) { PKCS7error(ERR_R_MALLOC_FAILURE); goto err; } ASN1_STRING_set0(seq, data, len); data = NULL; len = 0; if (!PKCS7_add_signed_attribute(si, NID_SMIMECapabilities, V_ASN1_SEQUENCE, seq)) goto err; seq = NULL; ret = 1; err: ASN1_STRING_free(seq); freezero(data, len); return ret; } LCRYPTO_ALIAS(PKCS7_add_attrib_smimecap); STACK_OF(X509_ALGOR) * PKCS7_get_smimecap(PKCS7_SIGNER_INFO *si) { ASN1_TYPE *cap; const unsigned char *p; int len; if ((cap = PKCS7_get_signed_attribute(si, NID_SMIMECapabilities)) == NULL) return NULL; if (cap->type != V_ASN1_SEQUENCE) return NULL; p = cap->value.sequence->data; len = cap->value.sequence->length; return d2i_X509_ALGORS(NULL, &p, len); } LCRYPTO_ALIAS(PKCS7_get_smimecap); /* * Add AlgorithmIdentifier OID of type |nid| to the SMIMECapability attribute * set |sk| (see RFC 3851, section 2.5.2). If keysize > 0, the OID has an * integer parameter of value |keysize|, otherwise parameters are omitted. * * See also CMS_add_simple_smimecap(). */ int PKCS7_simple_smimecap(STACK_OF(X509_ALGOR) *sk, int nid, int keysize) { X509_ALGOR *alg = NULL; ASN1_INTEGER *parameter = NULL; int parameter_type = V_ASN1_UNDEF; int ret = 0; if (keysize > 0) { if ((parameter = ASN1_INTEGER_new()) == NULL) goto err; if (!ASN1_INTEGER_set(parameter, keysize)) goto err; parameter_type = V_ASN1_INTEGER; } if ((alg = X509_ALGOR_new()) == NULL) goto err; if (!X509_ALGOR_set0_by_nid(alg, nid, parameter_type, parameter)) goto err; parameter = NULL; if (sk_X509_ALGOR_push(sk, alg) <= 0) goto err; alg = NULL; ret = 1; err: X509_ALGOR_free(alg); ASN1_INTEGER_free(parameter); return ret; } LCRYPTO_ALIAS(PKCS7_simple_smimecap); int PKCS7_add_attrib_content_type(PKCS7_SIGNER_INFO *si, ASN1_OBJECT *coid) { if (PKCS7_get_signed_attribute(si, NID_pkcs9_contentType)) return 0; if (!coid) coid = OBJ_nid2obj(NID_pkcs7_data); return PKCS7_add_signed_attribute(si, NID_pkcs9_contentType, V_ASN1_OBJECT, coid); } LCRYPTO_ALIAS(PKCS7_add_attrib_content_type); int PKCS7_add0_attrib_signing_time(PKCS7_SIGNER_INFO *si, ASN1_TIME *t) { ASN1_TIME *tm; int ret = 0; if ((tm = t) == NULL) tm = X509_gmtime_adj(NULL, 0); if (tm == NULL) { PKCS7error(ERR_R_MALLOC_FAILURE); goto err; } /* RFC 5652, section 11.3 - UTCTime for the years 1950-2049. */ if (ASN1_time_parse(tm->data, tm->length, NULL, tm->type) == -1) goto err; if (!PKCS7_add_signed_attribute(si, NID_pkcs9_signingTime, tm->type, tm)) goto err; tm = NULL; ret = 1; err: if (tm != t) ASN1_TIME_free(tm); return ret; } LCRYPTO_ALIAS(PKCS7_add0_attrib_signing_time); int PKCS7_add1_attrib_digest(PKCS7_SIGNER_INFO *si, const unsigned char *md, int md_len) { ASN1_OCTET_STRING *os; int ret = 0; if ((os = ASN1_OCTET_STRING_new()) == NULL) goto err; if (!ASN1_STRING_set(os, md, md_len)) goto err; if (!PKCS7_add_signed_attribute(si, NID_pkcs9_messageDigest, V_ASN1_OCTET_STRING, os)) goto err; os = NULL; ret = 1; err: ASN1_OCTET_STRING_free(os); return ret; } LCRYPTO_ALIAS(PKCS7_add1_attrib_digest);