openssl/doc/man3/CMS_add0_cert.pod
Dr. David von Oheimb 4329a321c9 CMS_add0_cert.pod: various improvements of the description
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
(Merged from https://github.com/openssl/openssl/pull/18667)
2022-07-16 08:15:09 +02:00

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=pod
=head1 NAME
CMS_add0_cert, CMS_add1_cert, CMS_get1_certs,
CMS_add0_crl, CMS_add1_crl, CMS_get1_crls
- CMS certificate and CRL utility functions
=head1 SYNOPSIS
#include <openssl/cms.h>
int CMS_add0_cert(CMS_ContentInfo *cms, X509 *cert);
int CMS_add1_cert(CMS_ContentInfo *cms, X509 *cert);
STACK_OF(X509) *CMS_get1_certs(CMS_ContentInfo *cms);
int CMS_add0_crl(CMS_ContentInfo *cms, X509_CRL *crl);
int CMS_add1_crl(CMS_ContentInfo *cms, X509_CRL *crl);
STACK_OF(X509_CRL) *CMS_get1_crls(CMS_ContentInfo *cms);
=head1 DESCRIPTION
CMS_add0_cert() and CMS_add1_cert() add certificate I<cert> to I<cms>.
I<cms> must be of type signed data or (authenticated) enveloped data.
For signed data, such a certificate can be used to fill in the signer
certificate and may also be helpful for chain building in certificate validation.
CMS_get1_certs() returns all certificates in I<cms>.
CMS_add0_crl() and CMS_add1_crl() add CRL I<crl> to I<cms>.
I<cms> must be of type signed data or (authenticated) enveloped data.
For signed data, such a CRL may be used in certificate validation.
CMS_get1_crls() returns all CRLs in I<cms>.
=head1 NOTES
The CMS_ContentInfo structure I<cms> must be of type signed data or enveloped
data or authenticated enveloped data or an error will be returned.
For signed data, certificates and CRLs are added to the I<certificates> and
I<crls> fields of SignedData structure.
For enveloped data they are added to B<OriginatorInfo>.
As the 0 implies, CMS_add0_cert() adds I<cert> internally to I<cms> and it
must not be freed up after the call as opposed to CMS_add1_cert() where I<cert>
must be freed up.
The same certificate or CRL must not be added to the same cms structure more
than once.
=head1 RETURN VALUES
CMS_add0_cert(), CMS_add1_cert() and CMS_add0_crl() and CMS_add1_crl() return
1 for success and 0 for failure.
CMS_get1_certs() and CMS_get1_crls() return the STACK of certificates or CRLs
or NULL if there are none or an error occurs. The only error which will occur
in practice is if the I<cms> type is invalid.
=head1 SEE ALSO
L<ERR_get_error(3)>,
L<CMS_sign(3)>,
L<CMS_encrypt(3)>
=head1 COPYRIGHT
Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
L<https://www.openssl.org/source/license.html>.
=cut