5 SMIME_write_CMS - convert CMS structure to S/MIME format.
9 #include <openssl/cms.h>
11 int SMIME_write_CMS(BIO *out, CMS_ContentInfo *cms, BIO *data, int flags);
15 SMIME_write_CMS() adds the appropriate MIME headers to a CMS
16 structure to produce an S/MIME message.
18 B<out> is the BIO to write the data to. B<cms> is the appropriate
19 B<CMS_ContentInfo> structure. If streaming is enabled then the content must be
20 supplied in the B<data> argument. B<flags> is an optional set of flags.
24 The following flags can be passed in the B<flags> parameter.
26 If B<CMS_DETACHED> is set then cleartext signing will be used,
27 this option only makes sense for signedData where B<CMS_DETACHED>
28 is also set when CMS_sign() is called.
30 If the B<CMS_TEXT> flag is set MIME headers for type B<text/plain>
31 are added to the content, this only makes sense if B<CMS_DETACHED>
34 If the B<CMS_STREAM> flag is set streaming is performed. This flag should
35 only be set if B<CMS_STREAM> was also set in the previous call to a
36 CMS_ContentInfo creation function.
38 If cleartext signing is being used and B<CMS_STREAM> not set then
39 the data must be read twice: once to compute the signature in CMS_sign()
40 and once to output the S/MIME message.
42 If streaming is performed the content is output in BER format using indefinite
43 length constructuted encoding except in the case of signed data with detached
44 content where the content is absent and DER format is used.
48 SMIME_write_CMS() always base64 encodes CMS structures, there
49 should be an option to disable this.
53 SMIME_write_CMS() returns 1 for success or 0 for failure.
57 L<ERR_get_error(3)|ERR_get_error(3)>, L<CMS_sign(3)|CMS_sign(3)>,
58 L<CMS_verify(3)|CMS_verify(3)>, L<CMS_encrypt(3)|CMS_encrypt(3)>
59 L<CMS_decrypt(3)|CMS_decrypt(3)>
63 SMIME_write_CMS() was added to OpenSSL 0.9.8