182 lines
5.7 KiB
Groff
182 lines
5.7 KiB
Groff
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.\" ========================================================================
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.\"
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.IX Title "SMIME_write_PKCS7 3"
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.TH SMIME_write_PKCS7 3 "2007-03-15" "0.9.8e" "OpenSSL"
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.SH "NAME"
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SMIME_write_PKCS7 \- convert PKCS#7 structure to S/MIME format.
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.SH "SYNOPSIS"
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.IX Header "SYNOPSIS"
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int SMIME_write_PKCS7(\s-1BIO\s0 *out, \s-1PKCS7\s0 *p7, \s-1BIO\s0 *data, int flags);
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.SH "DESCRIPTION"
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.IX Header "DESCRIPTION"
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\&\fISMIME_write_PKCS7()\fR adds the appropriate \s-1MIME\s0 headers to a PKCS#7
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structure to produce an S/MIME message.
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.PP
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\&\fBout\fR is the \s-1BIO\s0 to write the data to. \fBp7\fR is the appropriate
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\&\fB\s-1PKCS7\s0\fR structure. If cleartext signing (\fBmultipart/signed\fR) is
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being used then the signed data must be supplied in the \fBdata\fR
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argument. \fBflags\fR is an optional set of flags.
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.SH "NOTES"
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.IX Header "NOTES"
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The following flags can be passed in the \fBflags\fR parameter.
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.PP
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If \fB\s-1PKCS7_DETACHED\s0\fR is set then cleartext signing will be used,
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this option only makes sense for signedData where \fB\s-1PKCS7_DETACHED\s0\fR
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is also set when \fIPKCS7_sign()\fR is also called.
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.PP
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If the \fB\s-1PKCS7_TEXT\s0\fR flag is set \s-1MIME\s0 headers for type \fBtext/plain\fR
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are added to the content, this only makes sense if \fB\s-1PKCS7_DETACHED\s0\fR
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is also set.
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.PP
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If the \fB\s-1PKCS7_PARTSIGN\s0\fR flag is set the signed data is finalized
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and output along with the content. This flag should only be set
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if \fB\s-1PKCS7_DETACHED\s0\fR is also set and the previous call to \fIPKCS7_sign()\fR
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also set these flags.
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.PP
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If cleartext signing is being used and \fB\s-1PKCS7_PARTSIGN\s0\fR not set then
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the data must be read twice: once to compute the signature in \fIPKCS7_sign()\fR
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and once to output the S/MIME message.
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.SH "BUGS"
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.IX Header "BUGS"
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\&\fISMIME_write_PKCS7()\fR always base64 encodes PKCS#7 structures, there
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should be an option to disable this.
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.SH "RETURN VALUES"
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.IX Header "RETURN VALUES"
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\&\fISMIME_write_PKCS7()\fR returns 1 for success or 0 for failure.
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.SH "SEE ALSO"
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.IX Header "SEE ALSO"
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\&\fIERR_get_error\fR\|(3), \fIPKCS7_sign\fR\|(3),
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\&\fIPKCS7_verify\fR\|(3), \fIPKCS7_encrypt\fR\|(3)
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\&\fIPKCS7_decrypt\fR\|(3)
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.SH "HISTORY"
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.IX Header "HISTORY"
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\&\fISMIME_write_PKCS7()\fR was added to OpenSSL 0.9.5
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