linux man page for cms_add0_recipient_key

CMS_add1_recipient_cert(3SSL)                                         OpenSSL                                        CMS_add1_recipient_cert(3SSL)

NAME
        CMS_add1_recipient_cert, CMS_add0_recipient_key - add recipients to a CMS enveloped data structure

SYNOPSIS
        #include <openssl/cms.h>

        CMS_RecipientInfo *CMS_add1_recipient_cert(CMS_ContentInfo *cms, X509 *recip, unsigned int flags);

        CMS_RecipientInfo *CMS_add0_recipient_key(CMS_ContentInfo *cms, int nid, unsigned char *key, size_t keylen, unsigned char *id, size_t idlen, ASN1_GENERALIZEDTIME *date, ASN1_OBJECT *otherTypeId, ASN1_TYPE *otherType);

DESCRIPTION
       CMS_add1_recipient_cert() adds recipient recip to CMS_ContentInfo enveloped data structure cms as a KeyTransRecipientInfo structure.

       CMS_add0_recipient_key() adds symmetric key key of length keylen using wrapping algorithm nid, identifier id of length idlen and optional
       values date, otherTypeId and otherType to CMS_ContentInfo enveloped data structure cms as a KEKRecipientInfo structure.

       The CMS_ContentInfo structure should be obtained from an initial call to CMS_encrypt() with the flag CMS_PARTIAL set.

NOTES
       The main purpose of this function is to provide finer control over a CMS enveloped data structure where the simpler CMS_encrypt() function
       defaults are not appropriate. For example if one or more KEKRecipientInfo structures need to be added. New attributes can also be added
       using the returned CMS_RecipientInfo structure and the CMS attribute utility functions.

       OpenSSL will by default identify recipient certificates using issuer name and serial number. If CMS_USE_KEYID is set it will use the
       subject key identifier value instead. An error occurs if all recipient certificates do not have a subject key identifier extension.

       Currently only AES based key wrapping algorithms are supported for nid, specifically: NID_id_aes128_wrap, NID_id_aes192_wrap and
       NID_id_aes256_wrap.  If nid is set to NID_undef then an AES wrap algorithm will be used consistent with keylen.

RETURN VALUES
       CMS_add1_recipient_cert() and CMS_add0_recipient_key() return an internal pointer to the CMS_RecipientInfo structure just added or NULL if
       an error occurs.

SEE ALSO
       ERR_get_error(3), CMS_decrypt(3), CMS_final(3),

HISTORY
       CMS_add1_recipient_cert() and CMS_add0_recipient_key() were added to OpenSSL 0.9.8

1.0.1e                                                              2013-02-11                                       CMS_add1_recipient_cert(3SSL)