CMS_add0_cert, CMS_add1_cert, CMS_get1_certs, CMS_add0_crl, CMS_add1_crl, CMS_get1_crls - CMS certificate

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       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>.

3.5.0                                              2025-06-04                                CMS_ADD0_CERT(3SSL)

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.

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.

       CMS_add0_cert, CMS_add1_cert, CMS_get1_certs, CMS_add0_crl, CMS_add1_crl, CMS_get1_crls - CMS certificate
       and CRL utility functions

       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.

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.

ERR_get_error(3), CMS_sign(3), CMS_sign_ex(3), CMS_verify(3), CMS_encrypt(3)

        #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);