CMS_FINAL(3ossl) OpenSSL CMS_FINAL(3ossl)
NAME
CMS_final, CMS_final_digest - finalise a CMS_ContentInfo structure
SYNOPSIS
#include <openssl/cms.h>
int CMS_final(CMS_ContentInfo *cms, BIO *data, BIO *dcont, unsigned int flags);
int CMS_final_digest(CMS_ContentInfo *cms, const unsigned char *md,
unsigned int mdlen, BIO *dcont, unsigned int flags);
DESCRIPTION
CMS_final(3) finalises the structure cms. Its purpose is to perform any
operations necessary on cms (digest computation for example) and set
the appropriate fields. The parameter data contains the content to be
processed. The dcont parameter contains a BIO to write content to after
processing: this is only used with detached data and will usually be
set to NULL.
CMS_final_digest() finalises the structure cms using a pre-computed
digest, rather than computing the digest from the original data.
NOTES
These functions will normally be called when the CMS_PARTIAL flag is
used. It should only be used when streaming is not performed because
the streaming I/O functions perform finalisation operations internally.
To sign a pre-computed digest, CMS_sign(3) or CMS_sign_ex() is called
with the data parameter set to NULL before the CMS structure is
finalised with the digest provided to CMS_final_digest() in binary
form. When signing a pre-computed digest, the security relies on the
digest and its computation from the original message being trusted.
RETURN VALUES
CMS_final(3) and CMS_final_digest() return 1 for success or 0 for
failure.
SEE ALSO
ERR_get_error(3), CMS_sign(3), CMS_encrypt(3)
HISTORY
CMS_final_digest() was added in OpenSSL 3.2.
COPYRIGHT
Copyright 2008-2022 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>.
3.3.2 2024-09-04 CMS_FINAL(3ossl)
openssl 3.3.2 - Generated Sat Sep 7 14:12:41 CDT 2024