1 .\" $NetBSD: SMIME_read_CMS.3,v 1.14 2015/06/12 17:01:14 christos Exp $
3 .\" Automatically generated by Pod::Man 2.28 (Pod::Simple 3.28)
6 .\" ========================================================================
7 .de Sp \" Vertical space (when we can't use .PP)
11 .de Vb \" Begin verbatim text
16 .de Ve \" End verbatim text
20 .\" Set up some character translations and predefined strings. \*(-- will
21 .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
22 .\" double quote, and \*(R" will give a right double quote. \*(C+ will
23 .\" give a nicer C++. Capital omega is used to do unbreakable dashes and
24 .\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff,
25 .\" nothing in troff, for use with C<>.
27 .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
31 . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
32 . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
47 .\" Escape single quotes in literal strings from groff's Unicode transform.
51 .\" If the F register is turned on, we'll generate index entries on stderr for
52 .\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
53 .\" entries marked with X<> in POD. Of course, you'll have to process the
54 .\" output yourself in some meaningful fashion.
56 .\" Avoid warning from groff about undefined register 'F'.
60 .if \n(.g .if rF .nr rF 1
61 .if (\n(rF:(\n(.g==0)) \{
64 . tm Index:\\$1\t\\n%\t"\\$2"
74 .\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
75 .\" Fear. Run. Save yourself. No user-serviceable parts.
76 . \" fudge factors for nroff and troff
85 . ds #H ((1u-(\\\\n(.fu%2u))*.13m)
91 . \" simple accents for nroff and troff
101 . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
102 . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
103 . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
104 . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
105 . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
106 . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
108 . \" troff and (daisy-wheel) nroff accents
109 .ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
110 .ds 8 \h'\*(#H'\(*b\h'-\*(#H'
111 .ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
112 .ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
113 .ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
114 .ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
115 .ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
116 .ds ae a\h'-(\w'a'u*4/10)'e
117 .ds Ae A\h'-(\w'A'u*4/10)'E
118 . \" corrections for vroff
119 .if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
120 .if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
121 . \" for low resolution devices (crt and lpr)
122 .if \n(.H>23 .if \n(.V>19 \
135 .\" ========================================================================
137 .IX Title "SMIME_read_CMS 3"
138 .TH SMIME_read_CMS 3 "2009-07-19" "1.0.1n" "OpenSSL"
139 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
140 .\" way too many mistakes in technical documents.
145 \& SMIME_read_CMS \- parse S/MIME message.
150 .IX Header "SYNOPSIS"
152 \& #include <openssl/cms.h>
154 \& CMS_ContentInfo *SMIME_read_CMS(BIO *in, BIO **bcont);
157 .IX Header "DESCRIPTION"
158 \&\fISMIME_read_CMS()\fR parses a message in S/MIME format.
160 \&\fBin\fR is a \s-1BIO\s0 to read the message from.
162 If cleartext signing is used then the content is saved in a memory bio which is
163 written to \fB*bcont\fR, otherwise \fB*bcont\fR is set to \s-1NULL.\s0
165 The parsed CMS_ContentInfo structure is returned or \s-1NULL\s0 if an
169 If \fB*bcont\fR is not \s-1NULL\s0 then the message is clear text signed. \fB*bcont\fR can
170 then be passed to \fICMS_verify()\fR with the \fB\s-1CMS_DETACHED\s0\fR flag set.
172 Otherwise the type of the returned structure can be determined
173 using \fICMS_get0_type()\fR.
175 To support future functionality if \fBbcont\fR is not \s-1NULL \s0\fB*bcont\fR should be
176 initialized to \s-1NULL.\s0 For example:
180 \& CMS_ContentInfo *cms;
182 \& cms = SMIME_read_CMS(in, &cont);
186 The \s-1MIME\s0 parser used by \fISMIME_read_CMS()\fR is somewhat primitive. While it will
187 handle most S/MIME messages more complex compound formats may not work.
189 The parser assumes that the CMS_ContentInfo structure is always base64 encoded
190 and will not handle the case where it is in binary format or uses quoted
193 The use of a memory \s-1BIO\s0 to hold the signed content limits the size of message
194 which can be processed due to memory restraints: a streaming single pass option
197 .IX Header "RETURN VALUES"
198 \&\fISMIME_read_CMS()\fR returns a valid \fBCMS_ContentInfo\fR structure or \fB\s-1NULL\s0\fR
199 if an error occurred. The error can be obtained from \fIERR_get_error\fR\|(3).
201 .IX Header "SEE ALSO"
202 \&\fIERR_get_error\fR\|(3), \fICMS_type\fR\|(3)
203 \&\fISMIME_read_CMS\fR\|(3), \fICMS_sign\fR\|(3),
204 \&\fICMS_verify\fR\|(3), \fICMS_encrypt\fR\|(3)
205 \&\fICMS_decrypt\fR\|(3)
208 \&\fISMIME_read_CMS()\fR was added to OpenSSL 0.9.8