5 SMIME_write_PKCS7 - convert PKCS#7 structure to S/MIME format.
9 #include <openssl/pkcs7.h>
11 int SMIME_write_PKCS7(BIO *out, PKCS7 *p7, BIO *data, int flags);
15 SMIME_write_PKCS7() adds the appropriate MIME headers to a PKCS#7
16 structure to produce an S/MIME message.
18 B<out> is the BIO to write the data to. B<p7> is the appropriate
19 B<PKCS7> structure. If cleartext signing (B<multipart/signed>) is
20 being used then the signed data must be supplied in the B<data>
21 argument. B<flags> is an optional set of flags.
25 The following flags can be passed in the B<flags> parameter.
27 If B<PKCS7_DETACHED> is set then cleartext signing will be used,
28 this option only makes sense for signedData where B<PKCS7_DETACHED>
29 is also set when PKCS7_sign() is also called.
31 If the B<PKCS7_TEXT> flag is set MIME headers for type B<text/plain>
32 are added to the content, this only makes sense if B<PKCS7_DETACHED>
35 If the B<PKCS7_PARTSIGN> flag is set the signed data is finalized
36 and output along with the content. This flag should only be set
37 if B<PKCS7_DETACHED> is also set and the previous call to PKCS7_sign()
40 If cleartext signing is being used and B<PKCS7_PARTSIGN> not set then
41 the data must be read twice: once to compute the signature in PKCS7_sign()
42 and once to output the S/MIME message.
46 SMIME_write_PKCS7() always base64 encodes PKCS#7 structures, there
47 should be an option to disable this.
51 SMIME_write_PKCS7() returns 1 for success or 0 for failure.
55 L<ERR_get_error(3)|ERR_get_error(3)>, L<PKCS7_sign(3)|PKCS7_sign(3)>,
56 L<PKCS7_verify(3)|PKCS7_verify(3)>, L<PKCS7_encrypt(3)|PKCS7_encrypt(3)>
57 L<PKCS7_decrypt(3)|PKCS7_decrypt(3)>
61 SMIME_write_PKCS7() was added to OpenSSL 0.9.5