1=pod 2 3=head1 NAME 4 5CMS_add0_cert, CMS_add1_cert, CMS_get1_certs, CMS_add0_crl, CMS_add1_crl, CMS_get1_crls 6- CMS certificate and CRL utility functions 7 8=head1 SYNOPSIS 9 10 #include <openssl/cms.h> 11 12 int CMS_add0_cert(CMS_ContentInfo *cms, X509 *cert); 13 int CMS_add1_cert(CMS_ContentInfo *cms, X509 *cert); 14 STACK_OF(X509) *CMS_get1_certs(CMS_ContentInfo *cms); 15 16 int CMS_add0_crl(CMS_ContentInfo *cms, X509_CRL *crl); 17 int CMS_add1_crl(CMS_ContentInfo *cms, X509_CRL *crl); 18 STACK_OF(X509_CRL) *CMS_get1_crls(CMS_ContentInfo *cms); 19 20=head1 DESCRIPTION 21 22CMS_add0_cert() and CMS_add1_cert() add certificate I<cert> to I<cms>. 23I<cms> must be of type signed data or (authenticated) enveloped data. 24For signed data, such a certificate can be used when signing or verifying 25to fill in the signer certificate or to provide an extra CA certificate 26that may be needed for chain building in certificate validation. 27 28CMS_get1_certs() returns all certificates in I<cms>. 29 30CMS_add0_crl() and CMS_add1_crl() add CRL I<crl> to I<cms>. 31I<cms> must be of type signed data or (authenticated) enveloped data. 32For signed data, such a CRL may be used in certificate validation. 33It may be given both for inclusion when signing a CMS message 34and when verifying a signed CMS message. 35 36CMS_get1_crls() returns all CRLs in I<cms>. 37 38=head1 NOTES 39 40The CMS_ContentInfo structure I<cms> must be of type signed data or enveloped 41data or an error will be returned. 42 43For signed data certificates and CRLs are added to the I<certificates> and 44I<crls> fields of SignedData structure. For enveloped data they are added to 45B<OriginatorInfo>. 46 47As the I<0> implies CMS_add0_cert() adds I<cert> internally to I<cms> and it 48must not be freed up after the call as opposed to CMS_add1_cert() where I<cert> 49must be freed up. 50 51The same certificate or CRL must not be added to the same cms structure more 52than once. 53 54=head1 RETURN VALUES 55 56CMS_add0_cert(), CMS_add1_cert() and CMS_add0_crl() and CMS_add1_crl() return 571 for success and 0 for failure. 58 59CMS_get1_certs() and CMS_get1_crls() return the STACK of certificates or CRLs 60or NULL if there are none or an error occurs. The only error which will occur 61in practice is if the I<cms> type is invalid. 62 63=head1 SEE ALSO 64 65L<ERR_get_error(3)>, 66L<CMS_sign(3)>, 67L<CMS_encrypt(3)> 68 69=head1 COPYRIGHT 70 71Copyright 2008-2022 The OpenSSL Project Authors. All Rights Reserved. 72 73Licensed under the OpenSSL license (the "License"). You may not use 74this file except in compliance with the License. You can obtain a copy 75in the file LICENSE in the source distribution or at 76L<https://www.openssl.org/source/license.html>. 77 78=cut 79