convert CMS structure to S/MIME
CMS_ContentInfo *cms, BIO *data,
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
The following flags can be passed:
- Use cleartext signing. This option only makes sense if
cms is of the type SignedData
CMS_DETACHEDwas also set when it was created with CMS_sign(3).
CMS_STREAMis 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.
- Add MIME headers for type text/plain to the content. This only makes sense
CMS_DETACHEDis also set.
- Perform streaming. This flag should only be set if
CMS_STREAMwas 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
SMIME_write_CMS() always base64 encodes
CMS structures. There should be an option to disable this.