| =pod |
| |
| =head1 NAME |
| |
| SMIME_write_PKCS7 - convert PKCS#7 structure to S/MIME format. |
| |
| =head1 SYNOPSIS |
| |
| #include <openssl/pkcs7.h> |
| |
| int SMIME_write_PKCS7(BIO *out, PKCS7 *p7, BIO *data, int flags); |
| |
| =head1 DESCRIPTION |
| |
| SMIME_write_PKCS7() adds the appropriate MIME headers to a PKCS#7 |
| structure to produce an S/MIME message. |
| |
| B<out> is the BIO to write the data to. B<p7> is the appropriate B<PKCS7> |
| structure. If streaming is enabled then the content must be supplied in the |
| B<data> argument. B<flags> is an optional set of flags. |
| |
| =head1 NOTES |
| |
| The following flags can be passed in the B<flags> parameter. |
| |
| If B<PKCS7_DETACHED> is set then cleartext signing will be used, |
| this option only makes sense for signedData where B<PKCS7_DETACHED> |
| is also set when PKCS7_sign() is also called. |
| |
| If the B<PKCS7_TEXT> flag is set MIME headers for type B<text/plain> |
| are added to the content, this only makes sense if B<PKCS7_DETACHED> |
| is also set. |
| |
| If the B<PKCS7_STREAM> flag is set streaming is performed. This flag should |
| only be set if B<PKCS7_STREAM> was also set in the previous call to |
| PKCS7_sign() or B<PKCS7_encrypt()>. |
| |
| If cleartext signing is being used and B<PKCS7_STREAM> not set then |
| the data must be read twice: once to compute the signature in PKCS7_sign() |
| and once to output the S/MIME message. |
| |
| If streaming is performed the content is output in BER format using indefinite |
| length constructuted encoding except in the case of signed data with detached |
| content where the content is absent and DER format is used. |
| |
| =head1 BUGS |
| |
| SMIME_write_PKCS7() always base64 encodes PKCS#7 structures, there |
| should be an option to disable this. |
| |
| =head1 RETURN VALUES |
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| SMIME_write_PKCS7() returns 1 for success or 0 for failure. |
| |
| =head1 SEE ALSO |
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| L<ERR_get_error(3)|ERR_get_error(3)>, L<PKCS7_sign(3)|PKCS7_sign(3)>, |
| L<PKCS7_verify(3)|PKCS7_verify(3)>, L<PKCS7_encrypt(3)|PKCS7_encrypt(3)> |
| L<PKCS7_decrypt(3)|PKCS7_decrypt(3)> |
| |
| =head1 HISTORY |
| |
| SMIME_write_PKCS7() was added to OpenSSL 0.9.5 |
| |
| =cut |
