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CMS_add0_recipient_key.html
<?xml version="1.0" ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>CMS_add1_recipient_cert</title> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <link rev="made" href="mailto:root@localhost" /> </head> <body> <ul id="index"> <li><a href="#NAME">NAME</a></li> <li><a href="#SYNOPSIS">SYNOPSIS</a></li> <li><a href="#DESCRIPTION">DESCRIPTION</a></li> <li><a href="#NOTES">NOTES</a></li> <li><a href="#RETURN-VALUES">RETURN VALUES</a></li> <li><a href="#SEE-ALSO">SEE ALSO</a></li> <li><a href="#COPYRIGHT">COPYRIGHT</a></li> </ul> <h1 id="NAME">NAME</h1> <p>CMS_add1_recipient_cert, CMS_add0_recipient_key - add recipients to a CMS enveloped data structure</p> <h1 id="SYNOPSIS">SYNOPSIS</h1> <pre><code> #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);</code></pre> <h1 id="DESCRIPTION">DESCRIPTION</h1> <p>CMS_add1_recipient_cert() adds recipient <b>recip</b> to CMS_ContentInfo enveloped data structure <b>cms</b> as a KeyTransRecipientInfo structure.</p> <p>CMS_add0_recipient_key() adds symmetric key <b>key</b> of length <b>keylen</b> using wrapping algorithm <b>nid</b>, identifier <b>id</b> of length <b>idlen</b> and optional values <b>date</b>, <b>otherTypeId</b> and <b>otherType</b> to CMS_ContentInfo enveloped data structure <b>cms</b> as a KEKRecipientInfo structure.</p> <p>The CMS_ContentInfo structure should be obtained from an initial call to CMS_encrypt() with the flag <b>CMS_PARTIAL</b> set.</p> <h1 id="NOTES">NOTES</h1> <p>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.</p> <p>OpenSSL will by default identify recipient certificates using issuer name and serial number. If <b>CMS_USE_KEYID</b> 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.</p> <p>Currently only AES based key wrapping algorithms are supported for <b>nid</b>, specifically: NID_id_aes128_wrap, NID_id_aes192_wrap and NID_id_aes256_wrap. If <b>nid</b> is set to <b>NID_undef</b> then an AES wrap algorithm will be used consistent with <b>keylen</b>.</p> <h1 id="RETURN-VALUES">RETURN VALUES</h1> <p>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.</p> <h1 id="SEE-ALSO">SEE ALSO</h1> <p><a href="../man3/ERR_get_error.html">ERR_get_error(3)</a>, <a href="../man3/CMS_decrypt.html">CMS_decrypt(3)</a>, <a href="../man3/CMS_final.html">CMS_final(3)</a>,</p> <h1 id="COPYRIGHT">COPYRIGHT</h1> <p>Copyright 2008-2016 The OpenSSL Project Authors. All Rights Reserved.</p> <p>Licensed under the OpenSSL license (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 <a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p> </body> </html>
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