195 lines
6.2 KiB
Groff
195 lines
6.2 KiB
Groff
.\" Automatically generated by Pod::Man 4.07 (Pod::Simple 3.35)
|
|
.\"
|
|
.\" Standard preamble:
|
|
.\" ========================================================================
|
|
.de Sp \" Vertical space (when we can't use .PP)
|
|
.if t .sp .5v
|
|
.if n .sp
|
|
..
|
|
.de Vb \" Begin verbatim text
|
|
.ft CW
|
|
.nf
|
|
.ne \\$1
|
|
..
|
|
.de Ve \" End verbatim text
|
|
.ft R
|
|
.fi
|
|
..
|
|
.\" Set up some character translations and predefined strings. \*(-- will
|
|
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
|
|
.\" double quote, and \*(R" will give a right double quote. \*(C+ will
|
|
.\" give a nicer C++. Capital omega is used to do unbreakable dashes and
|
|
.\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff,
|
|
.\" nothing in troff, for use with C<>.
|
|
.tr \(*W-
|
|
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
|
|
.ie n \{\
|
|
. ds -- \(*W-
|
|
. ds PI pi
|
|
. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
|
|
. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
|
|
. ds L" ""
|
|
. ds R" ""
|
|
. ds C` ""
|
|
. ds C' ""
|
|
'br\}
|
|
.el\{\
|
|
. ds -- \|\(em\|
|
|
. ds PI \(*p
|
|
. ds L" ``
|
|
. ds R" ''
|
|
. ds C`
|
|
. ds C'
|
|
'br\}
|
|
.\"
|
|
.\" Escape single quotes in literal strings from groff's Unicode transform.
|
|
.ie \n(.g .ds Aq \(aq
|
|
.el .ds Aq '
|
|
.\"
|
|
.\" If the F register is >0, we'll generate index entries on stderr for
|
|
.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
|
|
.\" entries marked with X<> in POD. Of course, you'll have to process the
|
|
.\" output yourself in some meaningful fashion.
|
|
.\"
|
|
.\" Avoid warning from groff about undefined register 'F'.
|
|
.de IX
|
|
..
|
|
.if !\nF .nr F 0
|
|
.if \nF>0 \{\
|
|
. de IX
|
|
. tm Index:\\$1\t\\n%\t"\\$2"
|
|
..
|
|
. if !\nF==2 \{\
|
|
. nr % 0
|
|
. nr F 2
|
|
. \}
|
|
.\}
|
|
.\"
|
|
.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
|
|
.\" Fear. Run. Save yourself. No user-serviceable parts.
|
|
. \" fudge factors for nroff and troff
|
|
.if n \{\
|
|
. ds #H 0
|
|
. ds #V .8m
|
|
. ds #F .3m
|
|
. ds #[ \f1
|
|
. ds #] \fP
|
|
.\}
|
|
.if t \{\
|
|
. ds #H ((1u-(\\\\n(.fu%2u))*.13m)
|
|
. ds #V .6m
|
|
. ds #F 0
|
|
. ds #[ \&
|
|
. ds #] \&
|
|
.\}
|
|
. \" simple accents for nroff and troff
|
|
.if n \{\
|
|
. ds ' \&
|
|
. ds ` \&
|
|
. ds ^ \&
|
|
. ds , \&
|
|
. ds ~ ~
|
|
. ds /
|
|
.\}
|
|
.if t \{\
|
|
. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
|
|
. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
|
|
. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
|
|
. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
|
|
. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
|
|
. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
|
|
.\}
|
|
. \" troff and (daisy-wheel) nroff accents
|
|
.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
|
|
.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
|
|
.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
|
|
.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
|
|
.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
|
|
.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
|
|
.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
|
|
.ds ae a\h'-(\w'a'u*4/10)'e
|
|
.ds Ae A\h'-(\w'A'u*4/10)'E
|
|
. \" corrections for vroff
|
|
.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
|
|
.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
|
|
. \" for low resolution devices (crt and lpr)
|
|
.if \n(.H>23 .if \n(.V>19 \
|
|
\{\
|
|
. ds : e
|
|
. ds 8 ss
|
|
. ds o a
|
|
. ds d- d\h'-1'\(ga
|
|
. ds D- D\h'-1'\(hy
|
|
. ds th \o'bp'
|
|
. ds Th \o'LP'
|
|
. ds ae ae
|
|
. ds Ae AE
|
|
.\}
|
|
.rm #[ #] #H #V #F C
|
|
.\" ========================================================================
|
|
.\"
|
|
.IX Title "BIO_new_CMS 3"
|
|
.TH BIO_new_CMS 3 "2017-05-25" "1.0.2l" "OpenSSL"
|
|
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
|
|
.\" way too many mistakes in technical documents.
|
|
.if n .ad l
|
|
.nh
|
|
.SH "NAME"
|
|
.Vb 1
|
|
\& BIO_new_CMS \- CMS streaming filter BIO
|
|
.Ve
|
|
.SH "SYNOPSIS"
|
|
.IX Header "SYNOPSIS"
|
|
.Vb 1
|
|
\& #include <openssl/cms.h>
|
|
\&
|
|
\& BIO *BIO_new_CMS(BIO *out, CMS_ContentInfo *cms);
|
|
.Ve
|
|
.SH "DESCRIPTION"
|
|
.IX Header "DESCRIPTION"
|
|
\&\fIBIO_new_CMS()\fR returns a streaming filter \s-1BIO\s0 chain based on \fBcms\fR. The output
|
|
of the filter is written to \fBout\fR. Any data written to the chain is
|
|
automatically translated to a \s-1BER\s0 format \s-1CMS\s0 structure of the appropriate type.
|
|
.SH "NOTES"
|
|
.IX Header "NOTES"
|
|
The chain returned by this function behaves like a standard filter \s-1BIO.\s0 It
|
|
supports non blocking I/O. Content is processed and streamed on the fly and not
|
|
all held in memory at once: so it is possible to encode very large structures.
|
|
After all content has been written through the chain \fIBIO_flush()\fR must be called
|
|
to finalise the structure.
|
|
.PP
|
|
The \fB\s-1CMS_STREAM\s0\fR flag must be included in the corresponding \fBflags\fR
|
|
parameter of the \fBcms\fR creation function.
|
|
.PP
|
|
If an application wishes to write additional data to \fBout\fR BIOs should be
|
|
removed from the chain using \fIBIO_pop()\fR and freed with \fIBIO_free()\fR until \fBout\fR
|
|
is reached. If no additional data needs to be written \fIBIO_free_all()\fR can be
|
|
called to free up the whole chain.
|
|
.PP
|
|
Any content written through the filter is used verbatim: no canonical
|
|
translation is performed.
|
|
.PP
|
|
It is possible to chain multiple BIOs to, for example, create a triple wrapped
|
|
signed, enveloped, signed structure. In this case it is the applications
|
|
responsibility to set the inner content type of any outer CMS_ContentInfo
|
|
structures.
|
|
.PP
|
|
Large numbers of small writes through the chain should be avoided as this will
|
|
produce an output consisting of lots of \s-1OCTET STRING\s0 structures. Prepending
|
|
a \fIBIO_f_buffer()\fR buffering \s-1BIO\s0 will prevent this.
|
|
.SH "BUGS"
|
|
.IX Header "BUGS"
|
|
There is currently no corresponding inverse \s-1BIO:\s0 i.e. one which can decode
|
|
a \s-1CMS\s0 structure on the fly.
|
|
.SH "RETURN VALUES"
|
|
.IX Header "RETURN VALUES"
|
|
\&\fIBIO_new_CMS()\fR returns a \s-1BIO\s0 chain when successful or \s-1NULL\s0 if an error
|
|
occurred. The error can be obtained from \fIERR_get_error\fR\|(3).
|
|
.SH "SEE ALSO"
|
|
.IX Header "SEE ALSO"
|
|
\&\fIERR_get_error\fR\|(3), \fICMS_sign\fR\|(3),
|
|
\&\fICMS_encrypt\fR\|(3)
|
|
.SH "HISTORY"
|
|
.IX Header "HISTORY"
|
|
\&\fIBIO_new_CMS()\fR was added to OpenSSL 1.0.0
|