提交 731c6802 编写于 作者: D Dr. Stephen Henson

Update docs.

上级 4cfb986f
......@@ -15,10 +15,9 @@ SMIME_write_PKCS7 - convert PKCS#7 structure to S/MIME format.
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 cleartext signing (B<multipart/signed>) is
being used then the signed data must be supplied in the B<data>
argument. B<flags> is an optional set of flags.
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
......@@ -32,15 +31,20 @@ 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_PARTSIGN> flag is set the signed data is finalized
and output along with the content. This flag should only be set
if B<PKCS7_DETACHED> is also set and the previous call to PKCS7_sign()
also set these flags.
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_PARTSIGN> not set then
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.
=head1 NOTES
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
......
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