CMS_ADD0_CERT(3SSL) OpenSSL CMS_ADD0_CERT(3SSL)
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
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);
DESCRIPTION
CMS_add0_cert() and CMS_add1_cert() add certificate cert to cms unless
it is already present. This is used by CMS_sign_ex(3) and CMS_sign(3)
and may be used before calling CMS_verify(3) to help chain building in
certificate validation. As the 0 implies, CMS_add0_cert() adds cert
internally to cms and on success it must not be freed up by the caller.
In contrast, the caller of CMS_add1_cert() must free cert. cms must be
of type signed data or (authenticated) enveloped data. For signed data,
such a certificate can be used when signing or verifying to fill in the
signer certificate or to provide an extra CA certificate that may be
needed for chain building in certificate validation.
CMS_get1_certs() returns all certificates in cms.
CMS_add0_crl() and CMS_add1_crl() add CRL crl to cms. cms must be of
type signed data or (authenticated) enveloped data. For signed data,
such a CRL may be used in certificate validation with CMS_verify(3). It
may be given both for inclusion when signing a CMS message and when
verifying a signed CMS message.
CMS_get1_crls() returns all CRLs in cms.
NOTES
The CMS_ContentInfo structure 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 certificates and
crls fields of SignedData structure. For enveloped data they are added
to OriginatorInfo.
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. Besides out-of-
memory, the only error which will occur in practice is if the cms type
is invalid.
SEE ALSO
ERR_get_error(3), CMS_sign(3), CMS_sign_ex(3), CMS_verify(3),
CMS_encrypt(3)
HISTORY
CMS_add0_cert() and CMS_add1_cert() have been changed in OpenSSL 3.2 not
to throw an error if a certificate to be added is already present.
COPYRIGHT
Copyright 2008-2024 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
<https://www.openssl.org/source/license.html>.
3.5.7 2026-06-09 CMS_ADD0_CERT(3SSL)
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