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| | 124 | .\" ======================================================================== |
| | 125 | .\" |
| | 126 | .IX Title "SMIME_write_PKCS7 3" |
| | 127 | .TH SMIME_write_PKCS7 3 "2013-02-11" "1.0.1e" "OpenSSL" |
| | 128 | .\" For nroff, turn off justification. Always turn off hyphenation; it makes |
| | 129 | .\" way too many mistakes in technical documents. |
| | 130 | .if n .ad l |
| | 131 | .nh |
| | 132 | .SH "NAME" |
| | 133 | SMIME_write_PKCS7 \- convert PKCS#7 structure to S/MIME format. |
| | 134 | .SH "SYNOPSIS" |
| | 135 | .IX Header "SYNOPSIS" |
| | 136 | .Vb 1 |
| | 137 | \& #include <openssl/pkcs7.h> |
| | 138 | \& |
| | 139 | \& int SMIME_write_PKCS7(BIO *out, PKCS7 *p7, BIO *data, int flags); |
| | 140 | .Ve |
| | 141 | .SH "DESCRIPTION" |
| | 142 | .IX Header "DESCRIPTION" |
| | 143 | \&\fISMIME_write_PKCS7()\fR adds the appropriate \s-1MIME\s0 headers to a PKCS#7 |
| | 144 | structure to produce an S/MIME message. |
| | 145 | .PP |
| | 146 | \&\fBout\fR is the \s-1BIO\s0 to write the data to. \fBp7\fR is the appropriate \fB\s-1PKCS7\s0\fR |
| | 147 | structure. If streaming is enabled then the content must be supplied in the |
| | 148 | \&\fBdata\fR argument. \fBflags\fR is an optional set of flags. |
| | 149 | .SH "NOTES" |
| | 150 | .IX Header "NOTES" |
| | 151 | The following flags can be passed in the \fBflags\fR parameter. |
| | 152 | .PP |
| | 153 | If \fB\s-1PKCS7_DETACHED\s0\fR is set then cleartext signing will be used, |
| | 154 | this option only makes sense for signedData where \fB\s-1PKCS7_DETACHED\s0\fR |
| | 155 | is also set when \fIPKCS7_sign()\fR is also called. |
| | 156 | .PP |
| | 157 | If the \fB\s-1PKCS7_TEXT\s0\fR flag is set \s-1MIME\s0 headers for type \fBtext/plain\fR |
| | 158 | are added to the content, this only makes sense if \fB\s-1PKCS7_DETACHED\s0\fR |
| | 159 | is also set. |
| | 160 | .PP |
| | 161 | If the \fB\s-1PKCS7_STREAM\s0\fR flag is set streaming is performed. This flag should |
| | 162 | only be set if \fB\s-1PKCS7_STREAM\s0\fR was also set in the previous call to |
| | 163 | \&\fIPKCS7_sign()\fR or \fB\f(BIPKCS7_encrypt()\fB\fR. |
| | 164 | .PP |
| | 165 | If cleartext signing is being used and \fB\s-1PKCS7_STREAM\s0\fR not set then |
| | 166 | the data must be read twice: once to compute the signature in \fIPKCS7_sign()\fR |
| | 167 | and once to output the S/MIME message. |
| | 168 | .PP |
| | 169 | If streaming is performed the content is output in \s-1BER\s0 format using indefinite |
| | 170 | length constructuted encoding except in the case of signed data with detached |
| | 171 | content where the content is absent and \s-1DER\s0 format is used. |
| | 172 | .SH "BUGS" |
| | 173 | .IX Header "BUGS" |
| | 174 | \&\fISMIME_write_PKCS7()\fR always base64 encodes PKCS#7 structures, there |
| | 175 | should be an option to disable this. |
| | 176 | .SH "RETURN VALUES" |
| | 177 | .IX Header "RETURN VALUES" |
| | 178 | \&\fISMIME_write_PKCS7()\fR returns 1 for success or 0 for failure. |
| | 179 | .SH "SEE ALSO" |
| | 180 | .IX Header "SEE ALSO" |
| | 181 | \&\fIERR_get_error\fR\|(3), \fIPKCS7_sign\fR\|(3), |
| | 182 | \&\fIPKCS7_verify\fR\|(3), \fIPKCS7_encrypt\fR\|(3) |
| | 183 | \&\fIPKCS7_decrypt\fR\|(3) |
| | 184 | .SH "HISTORY" |
| | 185 | .IX Header "HISTORY" |
| | 186 | \&\fISMIME_write_PKCS7()\fR was added to OpenSSL 0.9.5 |
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