1=pod 2 3=head1 NAME 4 5SMIME_write_PKCS7 - convert PKCS#7 structure to S/MIME format. 6 7=head1 SYNOPSIS 8 9 #include <openssl/pkcs7.h> 10 11 int SMIME_write_PKCS7(BIO *out, PKCS7 *p7, BIO *data, int flags); 12 13=head1 DESCRIPTION 14 15SMIME_write_PKCS7() adds the appropriate MIME headers to a PKCS#7 16structure to produce an S/MIME message. 17 18B<out> is the BIO to write the data to. B<p7> is the appropriate 19B<PKCS7> structure. If cleartext signing (B<multipart/signed>) is 20being used then the signed data must be supplied in the B<data> 21argument. B<flags> is an optional set of flags. 22 23=head1 NOTES 24 25The following flags can be passed in the B<flags> parameter. 26 27If B<PKCS7_DETACHED> is set then cleartext signing will be used, 28this option only makes sense for signedData where B<PKCS7_DETACHED> 29is also set when PKCS7_sign() is also called. 30 31If the B<PKCS7_TEXT> flag is set MIME headers for type B<text/plain> 32are added to the content, this only makes sense if B<PKCS7_DETACHED> 33is also set. 34 35If the B<PKCS7_PARTSIGN> flag is set the signed data is finalized 36and output along with the content. This flag should only be set 37if B<PKCS7_DETACHED> is also set and the previous call to PKCS7_sign() 38also set these flags. 39 40If cleartext signing is being used and B<PKCS7_PARTSIGN> not set then 41the data must be read twice: once to compute the signature in PKCS7_sign() 42and once to output the S/MIME message. 43 44=head1 BUGS 45 46SMIME_write_PKCS7() always base64 encodes PKCS#7 structures, there 47should be an option to disable this. 48 49=head1 RETURN VALUES 50 51SMIME_write_PKCS7() returns 1 for success or 0 for failure. 52 53=head1 SEE ALSO 54 55L<ERR_get_error(3)|ERR_get_error(3)>, L<PKCS7_sign(3)|PKCS7_sign(3)>, 56L<PKCS7_verify(3)|PKCS7_verify(3)>, L<PKCS7_encrypt(3)|PKCS7_encrypt(3)> 57L<PKCS7_decrypt(3)|PKCS7_decrypt(3)> 58 59=head1 HISTORY 60 61SMIME_write_PKCS7() was added to OpenSSL 0.9.5 62 63=cut 64