SMIME_WRITE_CMS(3) | Library Functions Manual | SMIME_WRITE_CMS(3) |
SMIME_write_CMS
—
convert CMS structure to S/MIME format
#include
<openssl/cms.h>
int
SMIME_write_CMS
(BIO *out,
CMS_ContentInfo *cms, BIO *data,
int flags);
SMIME_write_CMS
()
adds the appropriate MIME headers to the cms structure
to produce an S/MIME message and writes it to out. If
streaming is enabled, the content must be supplied in the
data argument.
The following flags can be passed:
CMS_DETACHED
CMS_DETACHED
was also set when it was created
with CMS_sign(3).
If CMS_STREAM
is not set, the data
must be read twice: once to compute the signature in
CMS_sign(3) and once to output the
S/MIME message.
CMS_TEXT
CMS_DETACHED
is also set.CMS_STREAM
CMS_STREAM
was also passed to the function that
created cms.
The content is output in BER format using indefinite length constructed encoding except in the case of SignedData with detached content where the content is absent and DER format is used.
SMIME_write_CMS
() returns 1 for success or
0 for failure.
CMS_ContentInfo_new(3), CMS_encrypt(3), CMS_sign(3), d2i_CMS_ContentInfo(3), ERR_get_error(3), SMIME_write_ASN1(3)
SMIME_write_CMS
() first appeared in
OpenSSL 0.9.8h and has been available since OpenBSD
6.7.
SMIME_write_CMS
() always base64 encodes
CMS structures. There should be an option to disable this.
December 13, 2021 | OpenBSD-current |