diff options
Diffstat (limited to 'secure/lib/libcrypto/man/PKCS7_encrypt.3')
| -rw-r--r-- | secure/lib/libcrypto/man/PKCS7_encrypt.3 | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/secure/lib/libcrypto/man/PKCS7_encrypt.3 b/secure/lib/libcrypto/man/PKCS7_encrypt.3 new file mode 100644 index 0000000..e6c8552 --- /dev/null +++ b/secure/lib/libcrypto/man/PKCS7_encrypt.3 @@ -0,0 +1,210 @@ +.\" Automatically generated by Pod::Man 2.28 (Pod::Simple 3.28) +.\" +.\" 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 turned on, 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 +.. +.nr rF 0 +.if \n(.g .if rF .nr rF 1 +.if (\n(rF:(\n(.g==0)) \{ +. if \nF \{ +. de IX +. tm Index:\\$1\t\\n%\t"\\$2" +.. +. if !\nF==2 \{ +. nr % 0 +. nr F 2 +. \} +. \} +.\} +.rr rF +.\" +.\" 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 "PKCS7_encrypt 3" +.TH PKCS7_encrypt 3 "2015-12-03" "1.0.2e" "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" +PKCS7_encrypt \- create a PKCS#7 envelopedData structure +.SH "SYNOPSIS" +.IX Header "SYNOPSIS" +.Vb 1 +\& #include <openssl/pkcs7.h> +\& +\& PKCS7 *PKCS7_encrypt(STACK_OF(X509) *certs, BIO *in, const EVP_CIPHER *cipher, int flags); +.Ve +.SH "DESCRIPTION" +.IX Header "DESCRIPTION" +\&\fIPKCS7_encrypt()\fR creates and returns a PKCS#7 envelopedData structure. \fBcerts\fR +is a list of recipient certificates. \fBin\fR is the content to be encrypted. +\&\fBcipher\fR is the symmetric cipher to use. \fBflags\fR is an optional set of flags. +.SH "NOTES" +.IX Header "NOTES" +Only \s-1RSA\s0 keys are supported in PKCS#7 and envelopedData so the recipient +certificates supplied to this function must all contain \s-1RSA\s0 public keys, though +they do not have to be signed using the \s-1RSA\s0 algorithm. +.PP +\&\fIEVP_des_ede3_cbc()\fR (triple \s-1DES\s0) is the algorithm of choice for S/MIME use +because most clients will support it. +.PP +Some old \*(L"export grade\*(R" clients may only support weak encryption using 40 or 64 +bit \s-1RC2.\s0 These can be used by passing \fIEVP_rc2_40_cbc()\fR and \fIEVP_rc2_64_cbc()\fR +respectively. +.PP +The algorithm passed in the \fBcipher\fR parameter must support \s-1ASN1\s0 encoding of +its parameters. +.PP +Many browsers implement a \*(L"sign and encrypt\*(R" option which is simply an S/MIME +envelopedData containing an S/MIME signed message. This can be readily produced +by storing the S/MIME signed message in a memory \s-1BIO\s0 and passing it to +\&\fIPKCS7_encrypt()\fR. +.PP +The following flags can be passed in the \fBflags\fR parameter. +.PP +If the \fB\s-1PKCS7_TEXT\s0\fR flag is set \s-1MIME\s0 headers for type \fBtext/plain\fR are +prepended to the data. +.PP +Normally the supplied content is translated into \s-1MIME\s0 canonical format (as +required by the S/MIME specifications) if \fB\s-1PKCS7_BINARY\s0\fR is set no translation +occurs. This option should be used if the supplied data is in binary format +otherwise the translation will corrupt it. If \fB\s-1PKCS7_BINARY\s0\fR is set then +\&\fB\s-1PKCS7_TEXT\s0\fR is ignored. +.PP +If the \fB\s-1PKCS7_STREAM\s0\fR flag is set a partial \fB\s-1PKCS7\s0\fR structure is output +suitable for streaming I/O: no data is read from the \s-1BIO \s0\fBin\fR. +.SH "NOTES" +.IX Header "NOTES" +If the flag \fB\s-1PKCS7_STREAM\s0\fR is set the returned \fB\s-1PKCS7\s0\fR structure is \fBnot\fR +complete and outputting its contents via a function that does not +properly finalize the \fB\s-1PKCS7\s0\fR structure will give unpredictable +results. +.PP +Several functions including \fISMIME_write_PKCS7()\fR, \fIi2d_PKCS7_bio_stream()\fR, +\&\fIPEM_write_bio_PKCS7_stream()\fR finalize the structure. Alternatively finalization +can be performed by obtaining the streaming \s-1ASN1 \s0\fB\s-1BIO\s0\fR directly using +\&\fIBIO_new_PKCS7()\fR. +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +\&\fIPKCS7_encrypt()\fR returns either a \s-1PKCS7\s0 structure 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), \fIPKCS7_decrypt\fR\|(3) +.SH "HISTORY" +.IX Header "HISTORY" +\&\fIPKCS7_decrypt()\fR was added to OpenSSL 0.9.5 +The \fB\s-1PKCS7_STREAM\s0\fR flag was first supported in OpenSSL 1.0.0. |
