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Diffstat (limited to 'secure/lib/libcrypto/man/SMIME_read_PKCS7.3')
| -rw-r--r-- | secure/lib/libcrypto/man/SMIME_read_PKCS7.3 | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/secure/lib/libcrypto/man/SMIME_read_PKCS7.3 b/secure/lib/libcrypto/man/SMIME_read_PKCS7.3 new file mode 100644 index 0000000..4829c7d --- /dev/null +++ b/secure/lib/libcrypto/man/SMIME_read_PKCS7.3 @@ -0,0 +1,196 @@ +.\" Automatically generated by Pod::Man 2.25 (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++. 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Always turn off hyphenation; it makes +.\" way too many mistakes in technical documents. +.if n .ad l +.nh +.SH "NAME" +SMIME_read_PKCS7 \- parse S/MIME message. +.SH "SYNOPSIS" +.IX Header "SYNOPSIS" +.Vb 1 +\& #include <openssl/pkcs7.h> +\& +\& PKCS7 *SMIME_read_PKCS7(BIO *in, BIO **bcont); +.Ve +.SH "DESCRIPTION" +.IX Header "DESCRIPTION" +\&\fISMIME_read_PKCS7()\fR parses a message in S/MIME format. +.PP +\&\fBin\fR is a \s-1BIO\s0 to read the message from. +.PP +If cleartext signing is used then the content is saved in +a memory bio which is written to \fB*bcont\fR, otherwise +\&\fB*bcont\fR is set to \fB\s-1NULL\s0\fR. +.PP +The parsed PKCS#7 structure is returned or \fB\s-1NULL\s0\fR if an +error occurred. +.SH "NOTES" +.IX Header "NOTES" +If \fB*bcont\fR is not \fB\s-1NULL\s0\fR then the message is clear text +signed. \fB*bcont\fR can then be passed to \fIPKCS7_verify()\fR with +the \fB\s-1PKCS7_DETACHED\s0\fR flag set. +.PP +Otherwise the type of the returned structure can be determined +using \fIPKCS7_type()\fR. +.PP +To support future functionality if \fBbcont\fR is not \fB\s-1NULL\s0\fR +\&\fB*bcont\fR should be initialized to \fB\s-1NULL\s0\fR. For example: +.PP +.Vb 2 +\& BIO *cont = NULL; +\& PKCS7 *p7; +\& +\& p7 = SMIME_read_PKCS7(in, &cont); +.Ve +.SH "BUGS" +.IX Header "BUGS" +The \s-1MIME\s0 parser used by \fISMIME_read_PKCS7()\fR is somewhat primitive. +While it will handle most S/MIME messages more complex compound +formats may not work. +.PP +The parser assumes that the \s-1PKCS7\s0 structure is always base64 +encoded and will not handle the case where it is in binary format +or uses quoted printable format. +.PP +The use of a memory \s-1BIO\s0 to hold the signed content limits the size +of message which can be processed due to memory restraints: a +streaming single pass option should be available. +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +\&\fISMIME_read_PKCS7()\fR returns a valid \fB\s-1PKCS7\s0\fR structure or \fB\s-1NULL\s0\fR +is 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_type\fR\|(3) +\&\fISMIME_read_PKCS7\fR\|(3), \fIPKCS7_sign\fR\|(3), +\&\fIPKCS7_verify\fR\|(3), \fIPKCS7_encrypt\fR\|(3) +\&\fIPKCS7_decrypt\fR\|(3) +.SH "HISTORY" +.IX Header "HISTORY" +\&\fISMIME_read_PKCS7()\fR was added to OpenSSL 0.9.5 |
