- NAME
- SYNOPSIS
- DESCRIPTION
- NOTES
- RETURN VALUES
- SEE ALSO
- HISTORY

# NAME

     CMS_add0_cert, CMS_add1_cert, CMS_get1_certs, CMS_add0_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. must be of type signed data or enveloped data.

`CMS_get1_certs()` returns all certificates in cms.

`CMS_add0_crl()` and `CMS_add1_crl()` add CRL crl to cms. `CMS_get1_crls()` returns any CRLs in cms.

# NOTES

The CMS_ContentInfo structure cms must be of type signed data or 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.

As the 0 implies `CMS_add0_cert()` adds cert internally to cms and it must not be freed up after the call as opposed to `CMS_add1_cert()` where cert must be freed up.

The same certificate or CRL must not be added to the same cms structure more than once.

# 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 cms type is invalid.

# SEE ALSO

ERR_get_error, CMS_sign, CMS_encrypt

# HISTORY

CMS_add0_cert(), CMS_add1_cert(), CMS_get1_certs(), `CMS_add0_crl()` and `CMS_get1_crls()` were all first added to OpenSSL 0.9.8