2 ''' $RCSfile$$Revision$$Date$
20 .ie \\n(.$>=3 .ne \\$3
36 ''' Set up \*(-- to give an unbreakable dash;
37 ''' string Tr holds user defined translation string.
38 ''' Bell System Logo is used as a dummy character.
44 .if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
45 .if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch
48 ''' \*(M", \*(S", \*(N" and \*(T" are the equivalent of
49 ''' \*(L" and \*(R", except that they are used on ".xx" lines,
50 ''' such as .IP and .SH, which do another additional levels of
51 ''' double-quote interpretation
80 .\" If the F register is turned on, we'll generate
81 .\" index entries out stderr for the following things:
86 .\" X<> Xref (embedded
87 .\" Of course, you have to process the output yourself
88 .\" in some meaninful fashion.
91 .tm Index:\\$1\t\\n%\t"\\$2"
96 .TH PKCS7_encrypt 3 "0.9.7d" "2/Sep/2004" "OpenSSL"
100 .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
101 .de CQ \" put $1 in typewriter font
107 \\&\\$2 \\$3 \\$4 \\$5 \\$6 \\$7
110 .\" @(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2
111 . \" AM - accent mark definitions
113 . \" fudge factors for nroff and troff
122 . ds #H ((1u-(\\\\n(.fu%2u))*.13m)
128 . \" simple accents for nroff and troff
141 . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
142 . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
143 . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
144 . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
145 . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
146 . ds ? \s-2c\h'-\w'c'u*7/10'\u\h'\*(#H'\zi\d\s+2\h'\w'c'u*8/10'
147 . ds ! \s-2\(or\s+2\h'-\w'\(or'u'\v'-.8m'.\v'.8m'
148 . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
149 . ds q o\h'-\w'o'u*8/10'\s-4\v'.4m'\z\(*i\v'-.4m'\s+4\h'\w'o'u*8/10'
151 . \" troff and (daisy-wheel) nroff accents
152 .ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
153 .ds 8 \h'\*(#H'\(*b\h'-\*(#H'
154 .ds v \\k:\h'-(\\n(.wu*9/10-\*(#H)'\v'-\*(#V'\*(#[\s-4v\s0\v'\*(#V'\h'|\\n:u'\*(#]
155 .ds _ \\k:\h'-(\\n(.wu*9/10-\*(#H+(\*(#F*2/3))'\v'-.4m'\z\(hy\v'.4m'\h'|\\n:u'
156 .ds . \\k:\h'-(\\n(.wu*8/10)'\v'\*(#V*4/10'\z.\v'-\*(#V*4/10'\h'|\\n:u'
157 .ds 3 \*(#[\v'.2m'\s-2\&3\s0\v'-.2m'\*(#]
158 .ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
159 .ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
160 .ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
161 .ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
162 .ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
163 .ds ae a\h'-(\w'a'u*4/10)'e
164 .ds Ae A\h'-(\w'A'u*4/10)'E
165 .ds oe o\h'-(\w'o'u*4/10)'e
166 .ds Oe O\h'-(\w'O'u*4/10)'E
167 . \" corrections for vroff
168 .if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
169 .if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
170 . \" for low resolution devices (crt and lpr)
171 .if \n(.H>23 .if \n(.V>19 \
175 . ds v \h'-1'\o'\(aa\(ga'
191 PKCS7_encrypt \- create a PKCS#7 envelopedData structure
193 PKCS7 *\fIPKCS7_encrypt\fR\|(STACK_OF(X509) *certs, BIO *in, const EVP_CIPHER *cipher, int flags);
195 \fIPKCS7_encrypt()\fR creates and returns a PKCS#7 envelopedData structure. \fBcerts\fR
196 is a list of recipient certificates. \fBin\fR is the content to be encrypted.
197 \fBcipher\fR is the symmetric cipher to use. \fBflags\fR is an optional set of flags.
199 Only RSA keys are supported in PKCS#7 and envelopedData so the recipient certificates
200 supplied to this function must all contain RSA public keys, though they do not have to
201 be signed using the RSA algorithm.
203 \fIEVP_des_ede3_cbc()\fR (triple DES) is the algorithm of choice for S/MIME use because
204 most clients will support it.
206 Some old \*(L"export grade\*(R" clients may only support weak encryption using 40 or 64 bit
207 RC2. These can be used by passing \fIEVP_rc2_40_cbc()\fR and \fIEVP_rc2_64_cbc()\fR respectively.
209 The algorithm passed in the \fBcipher\fR parameter must support ASN1 encoding of its
212 Many browsers implement a \*(L"sign and encrypt\*(R" option which is simply an S/MIME
213 envelopedData containing an S/MIME signed message. This can be readily produced
214 by storing the S/MIME signed message in a memory BIO and passing it to
215 \fIPKCS7_encrypt()\fR.
217 The following flags can be passed in the \fBflags\fR parameter.
219 If the \fBPKCS7_TEXT\fR flag is set MIME headers for type \fBtext/plain\fR are prepended
222 Normally the supplied content is translated into MIME canonical format (as required
223 by the S/MIME specifications) if \fBPKCS7_BINARY\fR is set no translation occurs. This
224 option should be used if the supplied data is in binary format otherwise the translation
225 will corrupt it. If \fBPKCS7_BINARY\fR is set then \fBPKCS7_TEXT\fR is ignored.
227 \fIPKCS7_encrypt()\fR returns either a valid PKCS7 structure or NULL if an error occurred.
228 The error can be obtained from \fIERR_get_error\fR\|(3).
230 The lack of single pass processing and need to hold all data in memory as
231 mentioned in \fIPKCS7_sign()\fR also applies to \fIPKCS7_verify()\fR.
233 ERR_get_error(3), PKCS7_decrypt(3)
235 \fIPKCS7_decrypt()\fR was added to OpenSSL 0.9.5
238 .IX Title "PKCS7_encrypt 3"
239 .IX Name "PKCS7_encrypt - create a PKCS#7 envelopedData structure"
243 .IX Header "SYNOPSIS"
245 .IX Header "DESCRIPTION"
249 .IX Header "RETURN VALUES"
253 .IX Header "SEE ALSO"